LTC5510IUF#TRPBF - LINEAR TECHNOLOGY

LTC5510

5510fa

For more information www.linear.com/LTC5510

TYPICAL APPLICATION

FEATURES DESCRIPTION

1MHz to 6GHz Wideband

High Linearity Active Mixer

The LTC

5510 is a high linearity mixer optimized for applica-

tions requiring very wide input bandwidth, low distortion,

and low LO leakage. The chip includes a double-balanced

active mixer with an input buffer and a high speed LO ampli-

fier. The input is optimized for use with 1:1 transmission-

line baluns, allowing very wideband impedance matching.

The mixer can be used for both up- and down-conversion

and can be used in wideband systems.

The LO can be driven differentially or single-ended and

requires only 0dBm of LO power to achieve excellent distor-

tion and noise performance, while also reducing external

drive circuit requirements. The LTC5510 offers low LO

leakage, greatly reducing the need for output filtering to

meet LO suppression requirements.

The LTC5510 is optimized for 5V but can also be used

with a 3.3V supply with slightly reduced performance.

The shutdown function allows the part to be disabled for

further power savings.

30MHz to 4GHz Up/Down Mixer for Wideband Receiver Conversion Gain, IIP3 and NF

vs Input Frequency

APPLICATIONS

n Input Frequency Range to 6GHz

n 50Ω Matched Input from 30MHz to >3GHz

n Capable of Up- or Down-Conversion

n OIP3: 27dBm at fOUT = 1575MHz

n 1.5dB Conversion Gain

n Noise Figure: 11.6dB at fOUT = 1575MHz

n High Input P1dB: 11dBm at 5V

n 5V or 3.3V Supply at 105mA

n Shutdown Control

n LO Input Impedance Always Matched

n 0dBm LO Drive Level

n 0n-Chip Temperature Monitor

n –40°C to 105°C Operation (TC)

n 16-Lead (4mm × 4mm) QFN Package

n Wideband Receivers/Transmitters

n Cable Downlink Infrastructure

n HF/VHF/UHF Mixer

n Wireless Infrastructure L, LT, LT C , LT M, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

LGND

LO–

LO+

TEMP

TEMPERATURE

MONITOR

OUT+

OUT–

IN+

IN–

10nF

VCC1 VCC2 IADJ

LTC5510

1µF

6.8nH

5510 TA01

50Ω

OUT

1575MHz

50Ω

BD1222J50200AHF

4:1

30MHz TO

4GHz

50Ω

TCM1-43X+

1:1

0.1µF0.1µF

0.1µF

0.6pF

6.8pF

10nF

4.75kΩ

BIAS

INPUT FREQUENCY (MHz)

GAIN (dB), IIP3 (dBm), NF (dB)

1000 30002000 4000

5510 TA01a

IIP3

fOUT = 1575MHz

PIN = –10dBm

PLO = 0dBm

TC = 25°C

HS LO LS LO

LTC5510

5510fa

For more information www.linear.com/LTC5510

PIN CONFIGURATIONABSOLUTE MAXIMUM RATINGS

Supply Voltage (VCC1, VCC2, OUT+, OUT–) ................ 6.0V

Enable Voltage (EN) .........................–0.3V to VCC + 0.3V

Current Adjust Voltage (IADJ) .................... –0.3V to 2.7V

LO Input Power (1MHz to 6GHz) ........................ +10dBm

LO Differential DC Voltage .......................................1.5V

LO+, LO– Input DC Voltage ........................... –0.3V to 3V

IN+, IN– Input Power (1MHz to 6GHz) ................ +15dBm

IN+, IN– Input DC Voltage ......................... –0.3V to 2.4V

Temp Monitor Input Current (TEMP) ......................10mA

Operating Temperature Range (TC) ........ –40°C to 105°C

Storage Temperature Range .................. –65°C to 150°C

Junction Temperature (TJ) .................................... 150°C

(Note 1)

16 15 14 13

5 6 7 8

TOP VIEW

UF PACKAGE

16-LEAD (4mm

4mm) PLASTIC QFN

TEMP

IN+

IN–

LGND

GND

OUT+

OUT

–

GND

LO+

LO–

GND

VCC1

VCC2

IADJ

TJMAX = 150°C, θJC = 6°C/W

EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB

ORDER INFORMATION

LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE

LTC5510IUF#PBF LTC5510IUF#TRPBF 5510 16-Lead (4mm × 4mm) Plastic QFN –40°C to 105°C

Consult LTC Marketing for parts specified with wider operating temperature ranges.

For more information on lead free part marking, go to: http://www.linear.com/leadfree/

For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/

PARAMETER CONDITIONS MIN TYP MAX UNITS

Input Frequency Range Requires External Matching l1 to 6000 MHz

LO Input Frequency Range l1 to 6500 MHz

Output Frequency Range Requires External Matching l1 to 6000 MHz

Input Return Loss ZO = 50Ω, 30MHz to 3GHz >11 dB

LO Input Return Loss ZO = 50Ω, 1MHz to 5GHz >10 dB

Output Impedance Differential at 1500MHz 201Ω||0.6pF R||C

LO Input Power fLO = 1MHz to 5GHz –6 0 6 dBm

5V Wideband Up/Downmixer Application: fIN = 30MHz to 3000MHz, fOUT = 1575MHz, VCC = 5V, R1 = 4.75kΩ

Conversion Gain fIN = 190MHz, fLO = 1765MHz, Upmixer

fIN = 900MHz, fLO = 2475MHz, Upmixer

fIN = 2150MHz, fLO = 575MHz, Downmixer

fIN = 2600MHz, fLO = 1025MHz, Downmixer

0.5 1.5

1.4

1.1

1.2

Conversion Gain vs Temperature TC = –40°C to 105°C, fIN = 900MHz l–0.007 dB/°C

AC ELECTRICAL CHARACTERISTICS

The l denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TC = 25°C. EN = High, PLO = 0dBm. Test circuit shown in Figure 1. (Notes 2, 3, 4)

LTC5510

5510fa

For more information www.linear.com/LTC5510

AC ELECTRICAL CHARACTERISTICS

The l denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TC = 25°C. EN = High, PLO = 0dBm, PIN = –10dBm (–10dBm/tone for two-tone tests),

unless otherwise noted. Test circuit shown in Figure 1. (Notes 2, 3, 4)

PARAMETER CONDITIONS MIN TYP MAX UNITS

Two-Tone Output 3rd Order Intercept

(Δf = 2MHz)

fIN = 190MHz, fLO = 1765MHz, Upmixer

fIN = 900MHz, fLO = 2475MHz, Upmixer

fIN = 2150MHz, fLO = 575MHz, Downmixer

fIN = 2600MHz, fLO = 1025MHz, Downmixer

24.0 27.8

25.0

26.0

24.5

dBm

SSB Noise Figure fIN = 190MHz, fLO = 1765MHz, Upmixer

fIN = 900MHz, fLO = 2475MHz, Upmixer

fIN = 2150MHz, fLO = 575MHz, Downmixer

fIN = 2600MHz, fLO = 1025MHz, Downmixer

11.6

12.1

11.6

11.8

14.5 dB

SSB Noise Figure Under Blocking fIN =900MHz, fLO = 2475MHz,

fBLOCK = 800MHz, PBLOCK = +5dBm

20.3 dB

LO-IN Leakage fLO = 20MHz to 3300MHz <–50 dBm

LO-OUT Leakage fLO = 20MHz to 1000MHz

fLO = 1000MHz to 3300MHz

<–40

<–33

dBm

IN-OUT Isolation fIN = 20MHz to 1150MHz

fIN = 1150MHz to 3000MHz

>40

>22

IN-LO Isolation fIN = 30MHz to 3000MHz >55 dB

Input 1dB Compression fIN = 190MHz, fLO = 1765MHz, Upmixer

fIN = 900MHz, fLO = 2475MHz, Upmixer

fIN = 2150MHz, fLO = 575MHz, Downmixer

fIN = 2600MHz, fLO = 1025MHz, Downmixer

11.0

12.2

11.5

11.6

dBm

3.3V Wideband Up/Downmixer Application: fIN = 30MHz to 3000MHz, fOUT = 1575MHz, VCC = 3.3V, R1 = 1.8kΩ

Conversion Gain fIN = 190MHz, fLO = 1765MHz, Upmixer

fIN = 900MHz, fLO = 2475MHz, Upmixer

fIN = 2150MHz, fLO = 575MHz, Downmixer

fIN = 2600MHz, fLO = 1025MHz, Downmixer

1.5

1.4

1.1

1.2

Conversion Gain vs Temperature TC = –40°C to 105°C, fIN = 900MHz l–0.006 dB/°C

Two-Tone Output 3rd Order Intercept

(Δf = 2MHz)

fIN = 190MHz, fLO = 1765MHz, Upmixer

fIN = 900MHz, fLO = 2475MHz, Upmixer

fIN = 2150MHz, fLO = 575MHz, Downmixer

fIN = 2600MHz, fLO = 1025MHz, Downmixer

24.2

23.3

23.9

22.3

dBm

SSB Noise Figure fIN = 190MHz, fLO = 1765MHz, Upmixer

fIN = 900MHz, fLO = 2475MHz, Upmixer

fIN = 2150MHz, fLO = 575MHz, Downmixer

fIN = 2600MHz, fLO = 1025MHz, Downmixer

11.2

12.2

11.4

SSB Noise Figure Under Blocking fIN = 900MHz, fLO = 2475MHz,

fBLOCK = 800MHz PBLOCK = +5dBm

20.8 dB

LO-IN Leakage fLO = 20MHz to 3300MHz <–50 dBm

LO-OUT Leakage fLO = 20MHz to 1000MHz

fLO = 1000MHz to 3300MHz

<–40

<–33

dBm

IN-OUT Isolation fIN = 20MHz to 1150MHz

fIN = 1150MHz to 3000MHz

>40

>22

IN-LO Isolation fIN = 30MHz to 3000MHz >55 dB

Input 1dB Compression fIN = 190MHz, fLO = 1765MHz, Upmixer

fIN = 900MHz, fLO = 2475MHz, Upmixer

fIN = 2150MHz, fLO = 575MHz, Downmixer

fIN = 2600MHz, fLO = 1025MHz, Downmixer

8.9

10.7

10.1

9.6

dBm

LTC5510

5510fa

For more information www.linear.com/LTC5510

PARAMETER CONDITIONS MIN TYP MAX UNITS

5V Wideband Upmixer Application: fIN = 30MHz to 1000MHz, fOUT = 2140MHz, fLO = fIN + fOUT, VCC = 5V, R1 = 4.75kΩ

Conversion Gain fIN = 190MHz

fIN = 450MHz

fIN = 900MHz

1.1

1.0

Conversion Gain vs Temperature TC = –40°C to 105°C, fIN = 190MHz l–0.006 dB/°C

Two-Tone Output 3rd Order Intercept

(Δf = 2MHz)

fIN = 190MHz

fIN = 450MHz

fIN = 900MHz

25.6

24.6

23.9

dBm

SSB Noise Figure fIN = 190MHz

fIN = 450MHz

fIN = 900MHz

12.0

12.2

12.4

SSB Noise Floor at PIN = +5dBm fIN = 800MHz, fLO = 3040MHz, fOUT = 2140MHz –151.4 dBm/Hz

LO-IN Leakage fLO = 2100MHz to 3500MHz <–50 dBm

LO-OUT Leakage fLO = 2100MHz to 3500MHz <–31 dBm

IN-OUT Isolation fIN = 30MHz to 1100MHz >40 dB

IN-LO Isolation fIN = 30MHz to 1100MHz >50 dB

Input 1dB Compression fIN = 190MHz

fIN = 450MHz

fIN = 900MHz

11.5

11.7

dBm

5V VHF/UHF Wideband Downmixer Application: fIN = 100MHz to 1000MHz, fOUT = 44MHz, fLO = fIN + fOUT, VCC = 5V, R1 = Open

Conversion Gain fIN = 140MHz

fIN = 456MHz

fIN = 900MHz

1.9

Conversion Gain vs Temperature TC = –40°C to 105°C, fIN = 456MHz l–0.006 dB/°C

Two-Tone Input 3rd Order Intercept

(Δf = 2MHz)

fIN = 140MHz

fIN = 456MHz

fIN = 900MHz

27.8

28.5

26.8

dBm

SSB Noise Figure fIN = 140MHz

fIN = 456MHz

fIN = 900MHz

10.8

10.9

11.6

SSB Noise Figure Under Blocking fIN = 900MHz, fLO = 944MHz,

fBLOCK = 800MHz, PBLOCK = +5dBm

20.0 dB

Two-Tone Input 2nd Order Intercept

(Δf = fIM2 = 42MHz)

fIN1 = 477MHz, fIN2 = 435MHz, fLO = 500MHz 72 dBm

2LO-2RF Output Spurious Product

(fIN = fLO – fOUT/2)

fIN = 478MHz at –6dBm, fLO = 500MHz, fOUT = 44MHz –84 dBc

3LO-3RF Output Spurious Product

(fIN = fLO – fOUT/3)

fIN = 485.33MHz at –6dBm, fLO = 500MHz,

fOUT = 44.01MHz

–82 dBc

LO-IN Leakage fLO = 50MHz to 1200MHz <–62 dBm

LO-OUT Leakage fLO = 50MHz to 1200MHz <–31 dBm

IN-OUT Isolation fIN = 50MHz to 1000MHz >23 dB

IN-LO Isolation fIN = 50MHz to 1000MHz >62 dB

Input 1dB Compression fIN = 456MHz 12.1 dBm

AC ELECTRICAL CHARACTERISTICS

The l denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TC = 25°C. EN = High, PLO = 0dBm, PIN = –10dBm (–10dBm/tone for two-tone tests),

unless otherwise noted. Test circuit shown in Figure 1. (Notes 2, 3, 4)

LTC5510

5510fa

For more information www.linear.com/LTC5510

AC ELECTRICAL CHARACTERISTICS

The l denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TC = 25°C. EN = High, PLO = 0dBm, PIN = –10dBm (–10dBm/tone for two-tone tests),

unless otherwise noted. Test circuit shown in Figure 1. (Notes 2, 3, 4)

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: The LTC5510 is guaranteed functional over the case operating

temperature range of –40°C to 105°C. (θJC = 6°C/W)

Note 3: SSB Noise Figure measured with a small-signal noise source,

bandpass filter and 3dB matching pad on the signal input, bandpass filter

and 6dB matching pad on the LO input, and no other RF signals applied.

Note 4: Specified performance includes all external component and

evaluation PCB losses.

DC ELECTRICAL CHARACTERISTICS

The l denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TC = 25°C. VCC = 5V, EN = High, unless otherwise noted. Test circuit shown in

Figure 1. (Note 2)

PARAMETER CONDITIONS MIN TYP MAX UNITS

Power Supply

Supply Voltage (Pins 6, 7, 10, 11) 5V Supply

3.3V Supply

4.5

3.1

3.3

5.3

3.5

Supply Current (Pins 6, 7, 10, 11) 5V, R1 = Open

5V, R1 = 4.75k

3.3V, R1 = Open

3.3V, R1 = 1.8k

105

99.6

105

113

Total Supply Current – Shutdown EN = Low 1.3 2.5 mA

Enable Logic Input (EN)

EN Input High Voltage (On) l1.8 V

EN Input Low Voltage (Off) l0.5 V

EN Input Current –0.3V to VCC + 0.3V –20 200 μA

Turn-On Time EN: Low to High 0.6 μs

Turn-Off Time EN: High to Low 0.6 μs

Current Adjust Pin (IADJ)

Open Circuit DC Voltage 1.8 V

Short Circuit DC Current IADJ Shorted to Ground 1.9 mA

Temperature Monitor Pin (TEMP)

DC Voltage at TJ = 25°C IIN = 10µA

IIN = 80µA

697

755

Voltage Temperature Coefficient IIN = 10µA

IIN = 80µA

–1.80

–1.61

mV/°C

PARAMETER CONDITIONS MIN TYP MAX UNITS

5V VHF/UHF Upmixer Application: fIN = 70MHz, fOUT = 100MHz to 1000MHz, fLO = fIN + fOUT, VCC = 5V, R1 = Open, L3 = 220nH

Conversion Gain fOUT = 456MHz 1.1 dB

Conversion Gain vs Temperature TC = –40°C to 105°C, fOUT = 456MHz l–0.007 dB/°C

Two-Tone Output 3rd Order Intercept

(Δf = 2MHz)

fOUT = 456MHz 29.0 dBm

SSB Noise Figure fOUT = 456MHz 11.3 dB

SSB Noise Floor at PIN = +5dBm fIN = 44MHz, fLO = 532MHz, fOUT = 462MHz –152 dBm/Hz

LO-IN Leakage fLO = 100MHz to 1500MHz <–62 dBm

LO-OUT Leakage fLO = 100MHz to 1500MHz <–39 dBm

IN-OUT Isolation fIN = 50MHz to 400MHz >43 dB

IN-LO Isolation fIN = 50MHz to 400MHz >70 dB

Input 1dB Compression fOUT = 456MHz 11.0 dBm

LTC5510

5510fa

For more information www.linear.com/LTC5510

TYPICAL DC PERFORMANCE CHARACTERISTICS

TYPICAL AC PERFORMANCE CHARACTERISTICS

Conversion Gain Distribution

at 1575MHz OIP3 Distribution at 1575MHz

Noise Figure Distribution

at 1575MHz

5V Supply Current

vs Supply Voltage

3.3V Supply Current

vs Supply Voltage

(Test Circuit Shown in Figure 1)

5V Wideband Up/Downmixer Application:

VCC = 5V, TC = 25°C, fIN = 190MHz, PIN = –10dBm (–10dBm/tone for 2-tone tests, Δf = 2MHz), fLO = 1765MHz, PLO = 0dBm, output

measured at 1575MHz, unless otherwise noted. (Test Circuit Shown in Figure 1).

SUPPLY VOLTAGE (V)

4.5

SUPPLY CURRENT (mA)

102

104

100

4.7 5.14.9 5.3

106

5510 G01

TC = –40°C

TC = 25°C

TC = 85°C

TC = 105°C

R1 = 4.75kΩ

SUPPLY VOLTAGE (V)

3.0

SUPPLY CURRENT (mA)

3.1 3.53.43.33.2 3.6

5510 G02

TC = –40°C

TC = 25°C

TC = 85°C

TC = 105°C

R1 = 1.8kΩ

GAIN (dB)

0.8

DISTRIBUTION (%)

1 1.2 21.81.61.4 2.2

5510 G03

fIN = 190MHz

85°C

25°C

–40°C

OIP3 (dBm)

DISTRIBUTION (%)

23 31292725 33

5510 G04

fIN = 190MHz

85°C

25°C

–40°C

NOISE FIGURE (dB)

DISTRIBUTION (%)

13121110 14

5510 G05

fIN = 190MHz

85°C

25°C

–40°C

LTC5510

5510fa

For more information www.linear.com/LTC5510

Conversion Gain, OIP3 and NF

vs LO Power

Noise Figure

vs Input Blocker Level

Conversion Gain, OIP3 and NF

vs Supply Voltage

IM3 Level

vs Output Power (2-Tone)

IM2 Level

vs Output Power (2-Tone)

Conversion Gain, OIP3, NF and

Input P1dB vs Case Temperature

Conversion Gain, OIP3 and NF

vs Input Frequency

Conversion Gain and OIP3

vs Output Frequency LO Leakage vs LO Frequency

TYPICAL AC PERFORMANCE CHARACTERISTICS

5V Wideband Up/Downmixer Application for

fIN < 1575MHz: VCC = 5V, TC = 25°C, fIN = 190MHz, PIN = –10dBm (–10dBm/tone for 2-tone tests, Δf = 2MHz), HSLO,

PLO = 0dBm, output measured at 1575MHz, unless otherwise noted. (Test Circuit Shown in Figure 1).

INPUT FREQUENCY (MHz)

GAIN (dB), OIP3 (dBm), NF (dB)

1200800400 1600

5510 G06

OIP3

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

OUTPUT FREQUENCY (MHz)

1200

GAIN (dB), OIP3 (dBm)

180016001400 2000

5510 G07

OIP3

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

LO-IN

LO FREQUENCY (MHz)

1500

LO LEAKAGE (dBm)

–10

–20

–30

–40

–50

270023001900 3100

–60

–70

–80

5510 G08

LO-OUT

LO INPUT POWER (dBm)

–12

GAIN (dB), OIP3 (dBm), NF (dB)

30–3–6–9 6

5510 G09

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

OIP3

BLOCKER POWER (dBm)

–20

NOISE FIGURE (dB)

0–5–10–15 5

5510 G10

fIN = 900MHz

fBLOCK = 800MHz

fLO = 2475MHz

6dBm

3dBm

0dBm

–3dBm

PLO = –6dBm

SUPPLY VOLTAGE (V)

4.5

GAIN (dB), OIP3 (dBm), NF (dB)

5.25.15.04.94.84.74.6 5.3

5510 G11

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

OIP3

OUTPUT POWER (dBm)

–15

IM3 LEVEL (dBc)

–20

–40

–60

0–5–10 5

–80

–100

5510 G12

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

OUTPUT POWER (dBm)

–15

IM2 LEVEL (dBc)

–20

–40

–60

0–5–10 5

–80

–100

5510 G13

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

fIM2 = 1385MHz

CASE TEMPERATURE (°C)

–45

GAIN AND NF (dB), OIP3 AND P1dB (dBm)

754515–15 105

5510 G14

IP1dB

OIP3

LTC5510

5510fa

For more information www.linear.com/LTC5510

Conversion Gain, OIP3 and NF

vs LO Power

Conversion Gain, OIP3 and NF

vs Supply Voltage

IM3 Level

vs Output Power (2-Tone)

Conversion Gain, OIP3, NF and

Input P1dB vs Case Temperature

Conversion Gain, OIP3 and NF

vs Input Frequency

Conversion Gain and OIP3

vs Output Frequency LO Leakage vs LO Frequency

TYPICAL AC PERFORMANCE CHARACTERISTICS

5V Wideband Up/Downmixer Application

for fIN > 1575MHz: VCC = 5V, TC = 25°C, fIN = 2150MHz, PIN = –10dBm (–10dBm/tone for 2-tone tests, Δf = 2MHz), LSLO, PLO = 0dBm,

output measured at 1575MHz, unless otherwise noted. (Test Circuit Shown in Figure 1).

INPUT FREQUENCY (MHz)

1600

GAIN (dB), OIP3 (dBm), NF (dB)

280024002000 3200

5510 G15

OIP3

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

OUTPUT FREQUENCY (MHz)

1200

GAIN (dB), OIP3 (dBm)

180016001400 2000

5510 G16

OIP3

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

LO-IN

LO FREQUENCY (MHz)

0 300

LO LEAKAGE (dBm)

–10

–20

–30

–40

–50

1200900600 1500

–60

–70

–80

5510 G17

LO-OUT

LO INPUT POWER (dBm)

–12

GAIN (dB), OIP3 (dBm), NF (dB)

0–3–6–9 3 6

5510 G18

OIP3

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

SUPPLY VOLTAGE (V)

4.5

GAIN (dB), OIP3 (dBm), NF (dB)

4.94.7 5.1 5.3

5510 G20

OIP3

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

OUTPUT POWER (dBm)

–15

IM3 LEVEL (dBc)

–20

–40

–5–10 0 5

–60

–80

–100

5510 G21

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

CASE TEMPERATURE (°C)

–45 –15

GAIN AND NF (dB), OIP3 AND P1dB (dBm)

4515 75 105

5510 G23

OIP3

IP1dB

LTC5510

5510fa

For more information www.linear.com/LTC5510

Conversion Gain, OIP3 and NF

vs LO Power

Noise Figure

vs Input Blocker Level

Conversion Gain, OIP3 and NF

vs Supply Voltage

IM3 Level

vs Output Power (2-Tone)

IM2 Level

vs Output Power (2-Tone)

Conversion Gain, OIP3, NF and

Input P1dB vs Case Temperature

Conversion Gain, OIP3 and NF

vs Input Frequency

Conversion Gain and OIP3

vs Output Frequency LO Leakage vs LO Frequency

TYPICAL AC PERFORMANCE CHARACTERISTICS

3.3V Wideband Up/Downmixer Application

for fIN < 1575MHz: VCC = 3.3V, TC = 25°C, fIN = 190MHz, PIN = –10dBm (–10dBm/tone for 2-tone tests, Δf = 2MHz), HSLO, PLO = 0dBm,

output measured at 1575MHz, unless otherwise noted. (Test Circuit Shown in Figure 1).

INPUT FREQUENCY (MHz)

GAIN (dB), OIP3 (dBm), NF (dB)

1200800400 1600

5510 G24

OIP3

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

OUTPUT FREQUENCY (MHz)

1200

GAIN (dB), OIP3 (dBm)

180016001400 2000

5510 G25

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

OIP3

LO-IN

LO FREQUENCY (MHz)

1500

LO LEAKAGE (dBm)

–10

–20

–30

–40

–50

270023001900 3100

–60

–70

–80

5510 G26

LO-OUT

LO INPUT POWER (dBm)

–12

GAIN (dB), OIP3 (dBm), NF (dB)

30–3–6–9 6

5510 G27

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

OIP3

BLOCKER POWER (dBm)

–20

NOISE FIGURE (dB)

0–5–10–15 5

5510 G28

fIN = 900MHz

fBLOCK = 800MHz

fLO = 2475MHz

6dBm

3dBm

0dBm

–3dBm

PLO = –6dBm

SUPPLY VOLTAGE (V)

3.0

GAIN (dB), OIP3 (dBm), NF (dB)

3.53.43.33.23.1 3.6

5510 G29

OIP3

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

OUTPUT POWER (dBm)

–15

IM3 LEVEL (dBc)

–20

–40

–60

0–5–10 5

–80

–100

5510 G30

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

OUTPUT POWER (dBm)

–15

IM2 LEVEL (dBc)

–20

–40

–60

0–5–10 5

–80

–100

5510 G31

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

fIM2 = 1385MHz

CASE TEMPERATURE (°C)

–45

GAIN AND NF (dB), OIP3 AND P1dB (dBm)

754515–15 105

5510 G32

IP1dB

OIP3

LTC5510

5510fa

For more information www.linear.com/LTC5510

TYPICAL AC PERFORMANCE CHARACTERISTICS

3.3V Wideband Up/Downmixer Application for

fIN > 1575MHz: VCC = 3.3V, TC = 25°C, fIN = 2150MHz, PIN = –10dBm (–10dBm/tone for 2-tone tests, Δf = 2MHz), LSLO, PLO = 0dBm,

output measured at 1575MHz, unless otherwise noted. (Test Circuit Shown in Figure 1).

Conversion Gain, OIP3 and NF

vs LO Power

Conversion Gain, OIP3 and NF

vs Supply Voltage

IM3 Level

vs Output Power (2-Tone)

Conversion Gain, OIP3, NF and

Input P1dB vs Case Temperature

Conversion Gain, OIP3 and NF

vs Input Frequency

Conversion Gain and OIP3

vs Output Frequency LO Leakage vs LO Frequency

INPUT FREQUENCY (MHz)

1600

GAIN (dB), OIP3 (dBm), NF (dB)

280024002000 3200

5510 G33

OIP3

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

OUTPUT FREQUENCY (MHz)

1200

GAIN (dB), OIP3 (dBm)

180016001400 2000

5510 G34

OIP3

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

LO-IN

LO FREQUENCY (MHz)

LO LEAKAGE (dBm)

–10

–20

–30

–40

–50

1200900600300 1500

–60

–70

–80

5510 G35

LO-OUT

LO INPUT POWER (dBm)

–12

GAIN (dB), OIP3 (dBm), NF (dB)

30–3–6–9 6

5510 G36

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

OIP3

SUPPLY VOLTAGE (V)

3.0

GAIN (dB), OIP3 (dBm), NF (dB)

3.53.43.33.23.1 3.6

5510 G38

OIP3

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

OUTPUT POWER (dBm)

–15

IM3 LEVEL (dBc)

–20

–40

0–5–10 5

–60

–80

5510 G39

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

CASE TEMPERATURE (°C)

–45

GAIN AND NF (dB), OIP3 AND P1dB (dBm)

754515–15 105

5510 G41

OIP3

IP1dB

LTC5510

5510fa

For more information www.linear.com/LTC5510

Conversion Gain, OIP3 and NF

vs LO Power Output Noise Floor vs Input Power

Conversion Gain, OIP3 and NF

vs Supply Voltage

IM3 Level

vs Output Power (2-Tone)

IM2 Level

vs Output Power (2-Tone)

Conversion Gain, OIP3, NF and

Input P1dB vs Case Temperature

Conversion Gain, OIP3 and NF

vs Input Frequency

Conversion Gain, OIP3 and NF

vs Output Frequency LO Leakage vs LO Frequency

TYPICAL AC PERFORMANCE CHARACTERISTICS

5V Wideband Upmixer Application:

VCC = 5V, TC = 25°C, fIN = 190MHz, PIN = –10dBm (–10dBm/tone for 2-tone tests, Δf = 2MHz), HSLO, PLO = 0dBm, output measured at

2140MHz, unless otherwise noted. (Test Circuit Shown in Figure 1).

INPUT FREQUENCY (MHz)

GAIN (dB), OIP3 (dBm), NF (dB)

800400 1200

5510 G42

OIP3

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

OUTPUT FREQUENCY (MHz)

1600 1700

GAIN (dB), OIP3 (dBm), NF (dB)

2100 22001900 20001800 2300

5510 G43

OIP3

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

LO-IN

LO FREQUENCY (MHz)

2100

LO LEAKAGE (dBm)

–10

–20

–30

–40

–50

330031002900270025002300 3500

–60

–70

–80

5510 G44

LO-OUT

LO INPUT POWER (dBm)

–12

GAIN (dB), OIP3 (dBm), NF (dB)

30–3–6–9 6

5510 G45

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

OIP3

INPUT POWER (dBm)

–20

OUTPUT NOISE (dBm/Hz)

–148

–150

–152

0–5–10–15 5

–154

–156

–158

–160

–162

–146

5510 G46

fIN = 800MHz

fLO = 3040MHz

6dBm

3dBm

0dBm

–3dBm

PLO = –6dBm

SUPPLY VOLTAGE (V)

4.5

GAIN (dB), OIP3 (dBm), NF (dB)

5.25.15.04.94.84.74.6 5.3

5510 G47

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

OIP3

OUTPUT POWER (dBm)

–15

IM3 LEVEL (dBc)

–20

–40

–60

0–5–10 5

–80

–100

5510 G48

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

OUTPUT POWER (dBm)

–15

IM2 LEVEL (dBc)

–20

–40

–60

0–5–10 5

–80

–100

5510 G49

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

fIM2 = 1950MHz

CASE TEMPERATURE (°C)

–45

GAIN AND NF (dB), OIP3 AND P1dB (dBm)

754515–15 105

5510 G50

IP1dB

OIP3

LTC5510

5510fa

For more information www.linear.com/LTC5510

Conversion Gain, OIP3 and NF

vs LO Power

Output Noise Floor

vs Input Power

Conversion Gain, OIP3 and NF

vs Supply Voltage

IM3 Level

vs Output Power (2-Tone)

IM2 Level

vs Output Power (2-Tone)

Conversion Gain, OIP3, NF and

Input P1dB vs Case Temperature

Conversion Gain, OIP3 and NF

vs Output Frequency

Conversion Gain and OIP3

vs Input Frequency LO Leakage vs LO Frequency

TYPICAL AC PERFORMANCE CHARACTERISTICS

5V VHF/UHF Upmixer Application:

VCC = 5V, TC = 25°C, fIN = 70MHz, PIN = –10dBm (–10dBm/tone for 2-tone tests, Δf = 2MHz), HSLO, PLO = 0dBm, output measured at

456MHz, unless otherwise noted. (Test Circuit Shown in Figure 2).

OUTPUT FREQUENCY (MHz)

GAIN (dB), OIP3 (dBm), NF (dB)

800600400200 1000

5510 G51

OIP3

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

INPUT FREQUENCY (MHz)

GAIN (dB), OIP3 (dBm)

300200100 400

5510 G52

OIP3

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

LO-IN

LO FREQUENCY (MHz)

LO LEAKAGE (dBm)

–10

–20

–30

–40

–50

1200900600300 1500

–60

–70

–80

–90

5510 G53

LO-OUT

LO INPUT POWER (dBm)

–12

GAIN (dB), OIP3 (dBm), NF (dB)

30–3–6–9 6

5510 G54

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

OIP3

INPUT POWER (dBm)

–20

OUTPUT NOISE (dBm/Hz)

–148

–150

–152

–154

–156

0–5–10–15 5

–158

–160

–162

–146

5510 G55

fIN = 44MHz

fOUT = 462MHz

fLO = 532MHz

6dBm

3dBm

0dBm

–3dBm

PLO = –6dBm

SUPPLY VOLTAGE (V)

4.5

GAIN (dB), OIP3 (dBm), NF (dB)

5.25.15.04.94.84.74.6 5.3

5510 G56

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

OIP3

OUTPUT POWER (dBm)

–15

IM3 (dBc)

–20

–40

–60

0 3–3–12 –9 –6 6

–80

–100

5510 G57

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

OUTPUT POWER (dBm)

–15

IM2 (dBc)

–20

–40

–60

0–3–6 3–9–12 6

–80

–100

5510 G58

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

fIM2 = 386MHz

CASE TEMPERATURE (°C)

–45

GAIN AND NF (dB), OIP3 AND P1dB (dBm)

754515–15 105

5510 G59

OIP3

IP1dB

LTC5510

5510fa

For more information www.linear.com/LTC5510

Conversion Gain, IIP3 and NF

vs LO Power

Noise Figure

vs Input Blocker Level

Conversion Gain, IIP3 and NF

vs Supply Voltage

IM3 Level

vs Input Power (2-Tone)

Conversion Gain, IIP3, NF and

Input P1dB vs Case Temperature

Conversion Gain, IIP3 and NF

vs Input Frequency

Conversion Gain and IIP3

vs Output Frequency LO Leakage vs LO Frequency

TYPICAL AC PERFORMANCE CHARACTERISTICS

5V VHF/UHF Downmixer Application:

VCC = 5V, TC = 25°C, fIN = 456MHz, PIN = –10dBm (–10dBm/tone for 2-tone tests, Δf = 2MHz), HSLO, PLO = 0dBm, output measured at

44MHz, unless otherwise noted. (Test Circuit Shown in Figure 2).

INPUT FREQUENCY (MHz)

GAIN (dB), IIP3 (dBm), NF (dB)

800600400200 1000

5510 G60

IIP3

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

OUTPUT FREQUENCY (MHz)

GAIN (dB), IIP3 (dBm)

25020050 100 150 300

5510 G61

IIP3

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

LO-IN

LO FREQUENCY (MHz)

LO LEAKAGE (dBm)

–10

–20

–30

–40

–50

1000800200 400 600 1200

–60

–70

–80

5510 G62

LO-OUT

LO INPUT POWER (dBm)

–12

GAIN (dB), IIP3 (dBm), NF (dB)

30–3–6–9 6

5510 G63

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

IIP3

SUPPLY VOLTAGE (V)

4.5

GAIN (dB), IIP3 (dBm), NF (dB)

5.25.15.04.94.84.74.6 5.3

5510 G65

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

IIP3

INPUT POWER (dBm)

–15

IM3 (dBc)

–20

–40

–60

0–5–10 5

–80

–100

5510 G66

TC = 105°C

TC = 85°C

TC = 25°C

TC = –40°C

CASE TEMPERATURE (°C)

–45

GAIN AND NF (dB), IIP3 AND P1dB (dBm)

754515–15 105

5510 G68

IP1dB

IIP3

BLOCKER POWER (dBm)

–20

NOISE FIGURE (dB)

0–5–10–15 5

5510 G64

PLO = –6dBm

PLO = –3dBm

PLO = 0dBm

PLO = 3dBm

PLO = 6dBm

fIN = 900MHz

fBLOCK = 800MHz

fLO = 944MHz

LTC5510

5510fa

For more information www.linear.com/LTC5510

PIN FUNCTIONS

TEMP (Pin 1): Temperature Monitor. This pin is connected

to the anode of a diode through a 30Ω resistor. It may be

used to measure the die temperature by forcing a current

into the pin and measuring the voltage.

IN+, IN– (Pins 2, 3): Differential Signal Input. For optimum

performance, these pins should be driven with a differential

signal. The input can be driven single-ended, with some

performance degradation, by connecting the undriven pin

to RF ground through a capacitor. An internally generated

1.6V DC bias voltage is present on these pins, thus DC

blocking capacitors are required.

LGND (Pin 4): DC Ground Return for the Input Amplifier.

This pin must be connected to DC ground. The typical

current from this pin is 64mA. In some applications an

external chip inductor may be used. Note that any induc-

tor DC resistance will reduce the current through this pin.

EN (Pin 5): Enable Pin. When the applied voltage is greater

than 1.8V, the IC is enabled. Below 0.5V, the IC is disabled.

VCC1 , VCC2 (Pins 6, 7): Power Supply Pins for the Bias

and LO Buffer Circuits. Typical current consumption is

41mA. These pins should be connected together on the

circuit board and decoupled with a 10nF capacitor located

close to the pins.

IADJ (Pin 8): Bias Adjust Pin. This pin allows adjustment

of the internal mixer current by adding an external pull-

down resistor. The typical DC voltage on this pin is 1.8V.

If not used, this pin must be left floating.

GND (Pins 9, 12, 13, Exposed Pad (Pin 17)): Ground.

These pins must be soldered to the RF ground plane on

the circuit board. The exposed metal pad of the package

provides both electrical contact to ground and a good

thermal contact to the printed circuit board.

OUT–, OUT+ (Pins 10, 11,): Differential Output. These

pins must be connected to a DC supply through imped-

ance matching inductors and/or a transformer center-tap.

Typical DC current consumption is 32mA into each pin.

LO–, LO+ (Pins 14, 15): Differential Local Oscillator Input.

A single-ended LO may be used by connecting one pin to

RF ground through a DC blocking capacitor. These pins

are internally biased to 1.7V; thus, DC blocking capacitors

are required. Each LO input pin is internally matched to

50Ω for both EN states.

TP (Pin 16): Test Pin. This pin is used for production test

purposes only and must be connected to ground.

BLOCK DIAGRAM

15 14 13

LO+

EXPOSED PAD

GND LO–GND

EN VCC1

VCC2 IADJ

IN+

IN–

LGND

12 GND

9GND

OUT+

OUT–

5510 BD

TEMP

6 8

BIAS

LTC5510

5510fa

For more information www.linear.com/LTC5510

TEST CIRCUITS

TEMPERATURE

MONITOR TEMP

TP GND

GND

LO+

50Ω

LO–

IN+

IN–

OUT+

OUT–

LGND

IADJ

VCC1 VCC2

C5C4

OUT

50Ω

0.062”

0.015”

DC1983A

EVALUATION BOARD

STACK-UP

(NELCO N4000-13)

GND

BIAS

50Ω

1:1

16 13

15 14

6 7

5510 F01

VCC

TO VCC

123

654

4:1

GND

LTC5510

5V/3.3V Wideband

Up/Downmixer* 5V Wideband Upmixer

REF DES

fIN = 30MHz-3000MHz

fOUT = 1575MHz

fIN = 30MHz-2500 MHz

fOUT = 2140MHz SIZE COMMENTS

C1, C2, C4, C5 0.1µF 0.1µF 0402 Murata GRM15, X7R

C3 0.7pF - 0402 Murata GJM15, C0G

C6 1µF 1µF 0603 Murata GRM18, X7R

C7, C8 10nF 10nF 0402 Murata GRM15, X7R

C9 6.8pF 5.6pF 0402 Murata GJM15, C0G

L1, L2 6.8nH 5.6nH 0402 CoilCraft 0402HP

L3 0Ω 0Ω 0603

R1 4.75kΩ (5V),

1.8kΩ (3.3V)

4.75kΩ 0402 1%

T1 Mini-Circuits

TC1-1-13M+

Mini-Circuits

TC1-1-13M+

T2 Anaren

BD1222J50200AHF

Mini-Circuits

NCS4-232+

*Standard DC1983A Eval Board Configuration

Figure 1. High Frequency Output Test Circuit Schematic (DC1983A)

LTC5510

5510fa

For more information www.linear.com/LTC5510

TEST CIRCUITS

50Ω

1:1

1 6

3 4

TEMPERATURE

MONITOR TEMP

TP GND

GND

LO+

50Ω

LO–

IN+

IN–

OUT+

OUT–

LGND

IADJ

VCC1 VCC2

C5C4

OUT+

0.062”

0.015”

DC1984A

EVALUATION BOARD

STACK-UP

(NELCO N4000-13)

GND

BIAS

OUT–

16 13

15 14

6 7

5510 F02

VCC

OPTIONAL

DIFF OUT

4:1

GND

LTC5510

C10

Figure 2. Low Frequency Output Test Circuit Schematic (DC1984A)

5V VHF/UHF Upmixer*

5V VHF/UHF

Wideband Downmixer

REF DES

fIN = 70MHz

fOUT = 100MHz-1000 MHz

fIN = 100MHz-1000 MHz

fOUT = 44MHz SIZE COMMENTS

C1, C2, C4, C5 0.1µF 0.1µF 0402 Murata GRM15, X7R

C3 0.5pF 0.9pF 0402 Murata GJM15, C0G

C6 1µF 1µF 0603 Murata GRM18, X7R

C7, C8, C9, C10 10nF 10nF 0402 Murata GRM15, X7R

L1, L2 - - 0603

L3 220nH 0Ω 0603 Coilcraft 0603HP, WE 744761

L4, L5 15nH 0Ω 0402 CoilCraft 0402HP

R1 - - 0402

T1 Mini-Circuits

TC1-1-13M+

Mini-Circuits

TC1-1-13M+

T2 Mini-Circuits

TC4-19LN+

Mini-Circuits

TC4-1W-7ALN+

*Standard DC1984A Eval Board Configuration

LTC5510

5510fa

For more information www.linear.com/LTC5510

The LTC5510 uses wideband high performance RF and LO

amplifiers driving a double-balanced mixer core to achieve

frequency up- or down-conversion with high linearity over

a very broad frequency range. For flexibility, all ports are

differential; however, the LO port has also been optimized

for single-ended use. Low side or high side LO injection

can be used. The IN port may also be driven single-ended,

though with some reduction in performance.

See the Pin Functions and Block Diagram sections for a

description of each pin. Test circuit schematics showing all

APPLICATIONS INFORMATION

Figure 3. LTC5510 Evaluation Board Layouts

3a. High Frequency Output Board (DC1983A)

3b. Low Frequency Output Board (DC1984A)

external components required for the data sheet specified

performance are shown in Figures 1 and 2. The evaluation

boards are shown in Figures 3a and 3b.

The High Frequency Output test circuit, shown in Figure 1,

utilizes a multilayer chip balun to realize a single-ended

output. The Low Frequency Output test circuit in Figure 2

uses a wire-wound balun and is designed to accommodate

a differential output if desired. Both the IN and LO ports

are very broadband and use the same configurations for

both test circuits. Additional components may be used

to modify the DC supply current or frequency response,

which will be discussed in the following sections.

IN Port Interface

A simplified schematic of the mixer’s input is shown in

Figure 4a. The IN+ and IN– pins drive the bases of the input

transistors while internal resistors are used for impedance

matching. These pins are internally biased to a common

mode voltage of 1.6V, thus external capacitors C1 and C2

are required for DC isolation and can be used for impedance

matching. A small value of C3 can be used to improve the

impedance match at high frequencies and may improve

noise figure. The 1:1 transformer, T1, provides single-ended

to differential conversion for optimum performance.

The typical return loss at the IN port is shown in Figure 5

with 0.1µF at C1 and C2. The performance is better than

12dB up to 2.6GHz without C3. Adding a capacitance of

0.7pF at C3 extends the impedance match to 3GHz.

Differential input impedances (parallel equivalent) for

various frequencies are listed in Table 1. At frequencies

below 30MHz additional external components may be

needed to optimize the input impedance. Figure 4b shows

an equivalent circuit that can be used for single-ended

or differential impedance matching at frequencies below

1GHz. Above 1GHz, the S-parameters should be used.

The DC bias current of the input amplifier flows through Pin

4 (LGND). Typically this pin should be directly connected

to a good RF ground; however, at lower input frequencies

it may be beneficial to insert an inductor to ground for

improved IP2 performance. The inductor should have low

resistance and must be rated to handle 64mA DC current.

5510 F03a

5510 F03b

LTC5510

5510fa

For more information www.linear.com/LTC5510

APPLICATIONS INFORMATION

Figure 4a. IN Port with External Matching

Figure 4b. IN Port Equivalent Circuit (< 1GHz)

VCC

5510 F04a

1:1

LTC5510

64mA

LGND

IN+

IN–

VCC

Figure 5. IN Port Return Loss

Table 1. IN Port Differential Impedance

FREQUENCY

(MHz)

IMPEDANCE (Ω) REFL. COEFF.

REAL* IMAG* MAG ANG (°)

0.2 823 –j3971 0.89 –1.4

1 751 –j800 0.88 –7.2

10 133 –j154 0.50 –41

30 78.1 –j248 0.25 –36

50 73.3 –j378 0.20 –27

100 71.3 –j665 0.18 –17

200 70.7 –j961 0.17 –12

500 70.0 –j832 0.17 –14

1000 67.9 –j509 0.16 –24

1200 66.7 –j439 0.16 –28

1500 64.6 –j367 0.15 –35

2000 60.4 –j302 0.13 –49

2200 58.5 –j289 0.12 –55

2500 55.5 –j280 0.11 –66

3000 50.6 –j303 0.08 –91

4000 42.9 –j7460 0.08 –178

5000 42.7 j155 0.17 126

6000 55.9 j89 0.29 96

*Parallel Equivalent Impedance

LO Input Interface

The LTC5510 can be driven by a single-ended or differ-

ential LO signal. Internal resistors, as shown in Figure 6,

provide an impedance match of 50Ω per side or 100Ω

differential. The impedance match is maintained when the

part is disabled as well. The LO input pins are internally

biased to 1.7V, thus external capacitors, C4 and C5 are

used to provide DC isolation.

5510 F04b

75Ω

450Ω

200pF

IN+

–

FREQUENCY (MHz)

RETURN LOSS (dB)

–6

–12

–18

300020001000

4000

–24

–30

5510 F05

T1 = TC1-1-13M+

C1, C2 = 0.1µF

C3 = OPEN

C3 = 0.7pF

LTC5510

5510fa

For more information www.linear.com/LTC5510

APPLICATIONS INFORMATION

Figure 7. Single-Ended LO Input Return Loss

Figure 6. LO Input Circuit

Table 2. Single-Ended LO Input Impedance

FREQUENCY

(MHz)

IMPEDANCE (Ω) REFL. COEFF.

REAL IMAG MAG ANG (°)

1 90.3 –1.0 0.29 –1

10 87.5 –7.1 0.28 –8

100 55.3 –16.4 0.16 –63

600 47.8 –5.0 0.06 –111

1100 47.0 –4.7 0.06 –119

1600 46.2 –5.0 0.06 –124

2100 45.2 –5.1 0.07 –130

2600 44.2 –4.7 0.08 –138

3100 43.2 –3.9 0.08 –148

3600 42.3 –2.4 0.09 –161

4100 41.5 –0.3 0.09 –178

4500 40.8 2.0 0.10 166

5000 40.1 5.6 0.13 147

6000 38.6 14.3 0.20 120

6500 37.7 19.1 0.25 110

Table 3. Differential LO Input Impedance

FREQUENCY

(MHz)

IMPEDANCE (Ω) REFL. COEFF.

REAL IMAG MAG ANG (°)

1 94.9 –0.1 0.31 –0.1

10 95.3 –0.5 0.31 –0.4

100 94.8 –2.3 0.31 –2

600 91.7 –12.5 0.31 –12

1100 85.6 –20.1 0.30 –21

1600 78.4 –24.2 0.29 –30

2100 71.5 –25.4 0.27 –38

2600 65.7 –24.3 0.24 –45

3100 61.3 –21.7 0.22 –51

3600 58.2 –17.9 0.18 –56

4100 56.2 –13.3 0.14 –58

4500 55.2 –9.1 0.10 –55

5000 54.6 –2.9 0.05 –31

6000 54.0 11.0 0.11 64

6500 53.7 18.5 0.18 69

5510 F06

C5 LTC5510

LO–

LO+

VCC

FREQUENCY (MHz)

RETURN LOSS (dB)

–5

–10

–15

–20

4000300020001000

5000

–25

–30

5510 F07

OFF (EN = LOW)

ON (EN = HIGH)

C4, C5 = 0.1µF

The measured return loss of the LO input port is shown

in Figure 7 for C4 and C5 values of 0.1µF. The return loss

is better than 10dB from 5MHz to 6GHz. For frequencies

below 5MHz, larger C4 and C5 values are required. Table

2 lists the single-ended input impedance and reflection

coefficient versus frequency for the LO input. The dif-

ferential impedance is listed in Table 3.

LTC5510

5510fa

For more information www.linear.com/LTC5510

APPLICATIONS INFORMATION

5510 F08

32mA

LTC5510

OUT+

OUT–

VCC

Figure 8. Output Interface

Figure 9. Output Port Equivalent Circuit

5510 F09

LTC5510

OUT+

OUT–

245Ω 0.4pF 0.2pF

1.2nH

OUT Port Interface

The differential output interface is shown in Figure 8.

The OUT+ and OUT– pins are open collector outputs with

internal load resistors that provide a 245Ω differential

output resistance at low frequencies.

Figure 9 shows the equivalent circuit of the output and

Table 4 lists differential impedances for various frequencies.

The impedance values are listed in parallel equivalent form,

with equivalent capacitances also shown. For optimum

single-ended performance, the differential output signal

must be combined through an external transformer or a

discrete balun circuit. In applications where differential filters

or amplifiers follow the mixer, it is possible to eliminate

the transformer and drive these components differentially.

Table 4. Differential OUT Port Impedance

FREQUENCY

(MHz)

IMPEDANCE (Ω) REFL. COEFF.

REAL* IMAG* (CAP) MAG ANG

1 245 –j240k (0.67pF) 0.66 0.0

10 244 –j40k (0.40pF) 0.66 –0.2

50 244 –j5.31k (0.60pF) 0.66 –1.1

100 245 –j2.66k (0.60pF) 0.66 –2.3

300 243 –j884 (0.60pF) 0.66 –6.8

500 240 –j529 (0.60pF) 0.66 –11

1000 224 –j260 (0.61pF) 0.65 –23

1500 201 –j169 (0.63pF) 0.63 –35

2000 171 –j122 (0.65pF) 0.60 –48

2500 138 –j93 (0.69pF) 0.57 –62

3000 104 –j73 (0.73pF) 0.53 –78

3500 73 –j59 (0.77pF) 0.48 –97

4000 47 –j51 (0.78pF) 0.43 –120

4500 29 –j59 (0.60pF) 0.39 –148

5000 22 j4.74K 0.38 180

6000 49 j51 0.44 117

* Parallel Equivalent

Output Matching: High Frequency Output Board

The high frequency (HF) output evaluation board (DC1983A)

shown in Figure 3a is designed to use multilayer chip hybrid

baluns at the output. This board is intended for frequen-

cies above about 800MHz (limited by balun availability).

These baluns deliver good performance and are smaller

than wire-wound baluns. The board is configured for the

matching topology shown in Figure 10. Inductors L1 and

L2 are used to tune out the parasitic output capacitance,

while the transformer provides differential to single-ended

conversion and impedance transformation. The DC bias

to the mixer core can be applied through the matching

inductors. Each pin draws approximately 32mA of DC

supply current.

LTC5510

5510fa

For more information www.linear.com/LTC5510

Figure 10. HF Board Output Schematic

5510 F10

OUT+

OUT–

OUT

VCC

123

654

APPLICATIONS INFORMATION

Figure 12. LF Board Output Schematic

Figure 11. Out Port Return Loss of HF Board (DC1983A).

Tuned for 1575MHz (a), and 2140MHz (b)

Table 6. OUT Port Component Values: LF Output Board (DC1984A)

FREQUENCY

(MHz)

RANGE*

(MHz)

L1, L2

(nH)

L4, L5

(nH) T2

44 5 to 325 – 0Ω Mini-Circuits

TC4-1W-7ALN+

456 10 to 1300 – 15 Mini-Circuits

TC4-19LN+

* 12dB Return Loss Bandwidth

Table 5. OUT Port Component Values: HF Output Board (DC1983A)

FREQUENCY

(MHz)

RANGE*

(GHz)

L1, L2

(nH)

(pF) T2

1575 1.2 to 2.1 6.8 6.8 Anaren

BD1222J50200AHF

2140 1.6 to 2.5 5.6 5.6 Mini-Circuits

NCS4-232+

* 12dB Return Loss Bandwidth

FREQUENCY (MHz)

1000

–24

RETURN LOSS (dB)

–6

–12

–18

2500

3000

1500 2000

5510 F11

a b

VCC

5510 F12

OUT+

OUT–

OUT

LTC5510

C10

Capacitor C9 can be used to improve the impedance match.

The component values used for characterization are listed

in Table 5, along with the 12dB return loss bandwidths.

The measured return loss curves are plotted in Figure 11.

Output Matching: Low Frequency Output Board

For lower output frequencies, wire-wound transformers pro-

vide better performance. The low frequency (LF) evaluation

board (DC1984A) in Figure 3(b) accommodates these appli-

cations. The output matching topology is shown in Figure 12.

Components L1, L2, L4 and L5 are used to tune the im-

pedance match, while T2 provides the desired impedance

transformation. C9 and C10 are used for DC blocking in

some applications. Table 6 lists component values used

for characterization, and the measured return loss perfor-

mance is plotted in Figure 13.

LTC5510

5510fa

For more information www.linear.com/LTC5510

APPLICATIONS INFORMATION

DC and RF Grounding

The LTC5510 relies on the backside ground for both RF and

thermal performance. The exposed pad must be soldered

to the low impedance top side ground plane of the board.

The top side ground should also be connected to other

ground layers to aid in thermal dissipation and ensure a

low inductance RF ground. The LTC5510 evaluation boards

(Figures 3a and 3b) utilize a 4 × 4 array of vias under the

exposed pad for this purpose.

Enable Interface

Figure 14 shows a schematic of the EN pin interface. To

enable the part, the applied EN voltage must be greater

than 1.8V. Setting the voltage below 0.5V will disable

the IC. If the enable function is not required, the enable

pin can be connected to VCC through a 1k resistor. The

ramp-up time of the supply voltage should be greater than

1ms. The voltage at the enable pin should never exceed

the power supply voltage (VCC) by more than 0.3V. Under

no circumstances should voltage be applied to the enable

pin before the supply voltage is applied to the VCC pin. If

this occurs, damage to the IC may result.

5510 F14

LTC5510

300k

VCC1

Figure 14. Enable Pin Interface

Figure 15. Current Adjust Pin Interface

5510 F15

LTC5510

715Ω

4mA

IADJ

VCC1

R1BIAS

Table 7. Recommended Values for R1

VCC (V) fOUT (MHz) R1 (Ω) ICC (mA)

5 <1200 Open 105

5 >1200 4.75k 99

3.3 <1200 1k 90

3.3 >1200 1.8k 94

Current Adjust Pin (IADJ)

The IADJ pin (Pin 8) can be used to optimize the perfor-

mance of the mixer core over temperature. The nominal

open-circuit DC voltage on this pin is 1.8V and the typical

short-circuit current is 1.9mA. As shown in Figure 15, an

internal 4mA reference sets the current in the mixer core.

Connecting resistor R1 to the IADJ pin shunts some of

the reference current to ground, thus reducing the mixer

core current. The optimum value of R1 depends on the

supply voltage and intended output frequency. Some

recommended values are shown in Table 7, but the values

can be optimized as required for individual applications.

Figure 13. Out Port Return Loss of LF Board (DC1984A)

Tuned for 44MHz (a), and 456MHz (b)

FREQUENCY (MHz)

RETURN LOSS (dB)

–6

–12

1200900600300

1500

–18

–24

5510 F13

LTC5510

5510fa

For more information www.linear.com/LTC5510

5510 F17

LTC5510

10k

220µF

10nF

0.5Ω

VCC

5 6

VCC

Figure 17. Suggested Configuration for Simultaneous VCC

and EN Switching

APPLICATIONS INFORMATION

Figure 16. TEMP Pin Voltage vs Junction Temperature

JUNCTION TEMPERATURE (°C)

–50

TEMP PIN VOLTAGE (mV)

800

850

750

700

650

600

9070503010–10–30

110

550

500

900

5510 G16

IIN = 80µA

IIN = 10µA

Temperature Monitor (TEMP)

The TEMP input (pin 1) is connected to an on-chip diode

that can be used as a coarse temperature monitor by forc-

ing current into it and measuring the resulting voltage. The

temperature diode is protected by a series 30Ω resistor

and additional ESD diodes to ground.

The TEMP pin voltage is shown as a function of junction

temperature in Figure 16. Given the voltage (in mV) at

the pin, VD, the junction temperature can be estimated

for forced input currents of 10µA and 80µA using the

following equations:

TJ (10µA) = (VD – 742.4)/ –1.796

TJ (80µA) = (VD – 795.6)/ –1.609

Auto Supply Voltage Detect

An internal circuit automatically detects the supply volt-

age and configures internal components for 3.3V or 5V

operation. The DC current is affected when the auto-detect

circuit switches at approximately 4.1V. To avoid undesired

operation, the mixer should only be operated in the 3.1V

to 3.6V or 4.5V to 5.3V supply ranges.

Supply Voltage Ramping

Fast ramping of the supply voltage can cause a current

glitch in the internal ESD protection circuits. Depending on

the supply inductance, this could result in a supply volt-

age transient that exceeds the maximum rating. A supply

voltage ramp time of greater than 1ms is recommended.

The ramp rate of the supply voltage at the VCC pins should

not exceed 20V/ms. If the EN and VCC pins are switched

simultaneously, the configuration in Figure 17 can be used

to slow the rise time at the VCC pins if needed.

Spurious Output Levels

Mixer spurious output levels versus harmonics of the IN

and LO frequencies are tabulated in Tables 8 and 9 for

the 5V Wideband Up/Downmixer application. Results

are shown for frequencies up to 15GHz. The spur fre-

quencies can be calculated using the following equation:

fSPUR = |M • fIN ± N • fLO|

Table 8 shows the “difference” spurs (fSPUR = |M • fIN – N

• fLO|) and Table 9 shows the “sum” spurs (fSPUR = M • fIN

+ N • fLO ). The spur levels were measured on a standard

evaluation board at room temperature using the test circuit

shown in Figure 1. The spurious output levels for each

application will be dependent on the external matching

circuits and the particular application frequencies.

LTC5510

5510fa

For more information www.linear.com/LTC5510

Table 8. Output Spur Levels (dBc), fSPUR = |M • fIN – N • fLO|

(fIN = 190MHz at –7dBm, fLO = 1765MHz at 0dBm, VCC = 5V)

01234 5678

0 – –30 –30 –40 –18 –44 –4 –46 –24

1 –64 0** –50 –30 –64 –22 –55 –47 –72

2 * –37 –73 –65 –65 –58 –49 –72 –59

3 * –48 * –71 * –66 –79 –75 –86

4 * –68 * –83 * –84 * * *

5 * –77 * –84 * –87 * * *

6 * –89 * –87 * * * * *

7 * * * –86 * * * * *

8 * * * –84 * * * * *

9***** ****

10***** ****

* Less Than <–90dBc

**Carrier Frequency

Table 9. Output Spur Levels (dBc), fSPUR = M • fIN + N • fLO

(fIN = 190MHz at –7dBm, fLO = 1765MHz at 0dBm, VCC = 5V)

0 1 2345678

0 – –30 –30 –40 –18 –44 –4 –46 –24

1 -64 –0.4** –50 –16 –55 –26 –52 –52 –69

2 * –36 –73 –50 –63 –59 –46 –76 –62

3 * –49 –88 –65 * –72 –74 –84 –81

4 * –66 * –84 –90 * –79 * *

5 * –70 * * * * * *

6 * –73 * * * * * *

7 * –75 * * * * * *

8 * –74 * * * * * *

9 * –80 * * * * * *

10 * * * * * * * *

* Less Than <–90dBc

**Image Frequency

APPLICATIONS INFORMATION

LTC5510

5510fa

For more information www.linear.com/LTC5510

TYPICAL APPLICATIONS

LGND

LO–

LO+

OUT+

OUT–

IN+

IN–

10nF

VCC1 VCC2 IADJ

LTC5510

1µF

2nH

5510 TA02

50Ω

456MHz

MINI-CIRCUITS

TC1-1-13M+

1:1

MINI-CIRCUITS

NCS1-422+

1:1

0.1µF0.1µF

0.1µF

0.7pF

4.75kΩ

BIAS

TYPICAL PERFORMANCE (ROOM TEMPERATURE)

IN = 456MHz, OUT = 3500MHz, LO = 3956MHz

PIN = –10dBm, PLO = 0dBm

GC = 0.6dB

OIP3 = 24.7dBm

SSB NF = 13.3dB

INPUT P1dB = 11dBm

OUT

50Ω

123

654

10nF

4.7pF

OUTPUT FREQUENCY (MHz)

3100

OIP3 (dBm), NF (dB)

GAIN (dB)

370035003300 3900

5510 TA03

OIP3

HSLO

LSLO

fIN = 456MHz

INPUT FREQUENCY (MHz)

OIP3 (dBm)

GAIN (dB)

800600400200 1000

5510 TA04

OIP3

fOUT = 3500MHz

HSLO

LSLO

FREQUENCY (MHz)

ISOLATION (dB)

LO LEAKAGE (dBm)

4000300020001000 5000

100

–20

–40

–60

–80

–100

5510 TA05

IN-LO LO-OUT

LO-IN

IN-OUT

FREQUENCY (MHz)

RETURN LOSS (dB)

–6

–12

–18

4000300020001000 5000

–24

–30

5510 TA06

OUT

Upmixer with 3.3GHz to 3.8GHz Output

Conversion Gain, OIP3 and NF

vs Output Frequency

IN Isolation and LO Leakage

vs Frequency

Conversion Gain and OIP3

vs Input Frequency

IN, OUT and LO Port Return Loss

vs Frequency

LTC5510

5510fa

For more information www.linear.com/LTC5510

TYPICAL APPLICATIONS

Mixer with Extended Input Frequency Range to 6GHz

Conversion Gain and IIP3

vs Input Frequency

IN PORT and LO PORT Return Loss

vs Frequency

LO-OUT Leakage and IN-OUT

Isolation vs Frequency

OUT PORT Return Loss

vs Frequency

LGND

LO–

LO+

OUT+

OUT–

IN+

IN–

10nF

VCC1 VCC2 IADJ

LTC5510

1µF

5510 TA07

50Ω

OUT

140MHz

30MHz TO 6000MHz

MINI-CIRCUITS

TCM1-63AX+

1:1

MINI-CIRCUITS

TC4-1W-7ALN+

4:1

0.1µF0.1µF

0.1µF

0.3pF 0.05pF

10nF

4.75kΩ

BIAS

TYPICAL PERFORMANCE (ROOM TEMPERATURE)

IN = 3GHz, OUT = 140MHz, LO = 3.14GHz

PIN = –10dBm, PLO = 0dBm

GC = 1.3dB

IIP3 = 21.3dBm

INPUT FREQUENCY (MHz)

RETURN LOSS (dB)

50004000300020001000 6000

–5

5510 TA08

IIP3

FREQUENCY (MHz)

LO-OUT LEAKAGE (dBm)

IN-OUT ISOLATION (dB)

–20

–10

–30

–40

–50

50004000300020001000 6000

–60

5510 TA09

IN-OUT

LO-OUT

FREQUENCY (MHz)

RETURN LOSS (dB)

–10

–5

–15

–20

–25

50004000300020001000 6000

–35

–30

5510 TA10

IN-PORT

LO-PORT

FREQUENCY (MHz)

RETURN LOSS (dB)

–10

–5

–15

–20

400300200100 500

–25

5510 TA11

LTC5510

5510fa

For more information www.linear.com/LTC5510

TYPICAL APPLICATIONS

LGND

LO–

LO+

OUT+

OUT–

IN+

IN–

10nF

VCC1 VCC2 IADJ

LTC5510

1µF

100MHz TO 1000MHz

50Ω

5510 TA12

50Ω

OUT

44MHZ

50Ω

TYPICAL PERFORMANCE (TC = 25°C)

IN = 450MHz, OUT = 44MHz, LO = 494MHz

PIN = –5dBm, PLO = 0dBm

GC = 1.8dB

IIP3 = 26.3dBm

SSB NF = 11.5dB

INPUT P1dB = 8.8dBm

TC4-1W-7ALN+

4:1

10nF10nF

10nF

100nH

BIAS

Broadband Downmixer Application Using Single-Ended Input

INPUT FREQUENCY (MHz)

GAIN (dB), IIP3 (dBm), NF (dB)

800600400200 1000

5510 TA13

IIP3

fOUT = 44MHz

HSLO

OUTPUT FREQUENCY (MHz)

GAIN (dB)

IIP3 (dBm)

25020015010050 300

5510 TA14

IIP3

fIN = 450MHz

HSLO

FREQUENCY (MHz)

LO LEAKAGE (dBm)

IN ISOLATION (dB)

900600300 1200

–90

–80

–70

–60

–50

–40

–30

–20

–10

5510 TA15

IN-LO

IN-OUT

LO-IN

LO-OUT

FREQUENCY (MHz)

RETURN LOSS (dB)

800 1000600400200 1200

–35

–30

–25

–20

–15

–10

–5

5510 TA16

OUT

Conversion Gain, IIP3 and NF

vs Input Frequency

LO Leakage and IN Isolation

vs Frequency

Conversion Gain and IIP3

vs Output Frequency

IN, OUT and LO Port Return Loss

vs Frequency

LTC5510

5510fa

For more information www.linear.com/LTC5510

PACKAGE DESCRIPTION

Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.

4.00 ±0.10

(4 SIDES)

NOTE:

1. DRAWING CONFORMS TO JEDEC PACKAGE OUTLINE MO-220 VARIATION (WGGC)

2. DRAWING NOT TO SCALE

3. ALL DIMENSIONS ARE IN MILLIMETERS

4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE

MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE

5. EXPOSED PAD SHALL BE SOLDER PLATED

6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION

ON THE TOP AND BOTTOM OF PACKAGE

PIN 1

TOP MARK

(NOTE 6)

0.55 ±0.20

1615

BOTTOM VIEW—EXPOSED PAD

2.15 ±0.10

(4-SIDES)

0.75 ±0.05 R = 0.115

TYP

0.30 ±0.05

0.65 BSC

0.200 REF

0.00 – 0.05

(UF16) QFN 10-04

RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS

0.72 ±0.05

0.30 ±0.05

0.65 BSC

2.15 ±0.05

(4 SIDES)

2.90 ±0.05

4.35

±0.05

PACKAGE OUTLINE

PIN 1 NOTCH R = 0.20 TYP

OR 0.35 × 45° CHAMFER

UF Package

16-Lead Plastic QFN (4mm × 4mm)

(Reference LTC DWG # 05-08-1692 Rev Ø)

LTC5510

5510fa

For more information www.linear.com/LTC5510

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-

tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.

REVISION HISTORY

REV DATE DESCRIPTION PAGE NUMBER

A 06/15 LO and OUTPUT frequency range increased to 6500 and 6000MHz, respectively.

Corrected Figure 4 caption.

2, 19, 20, 22,

23, 26

LTC5510

5510fa

For more information www.linear.com/LTC5510

5V CATV Downmixer with 1GHz IF Bandwidth

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com/LTC5510

 LINEAR TECHNOLOGY CORPORATION 2013

LT 0615 REV A • PRINTED IN USA

RELATED PARTS

TYPICAL APPLICATION

PART NUMBER DESCRIPTION COMMENTS

Mixers and Modulators

5527 400MHz to 3.7GHz, 5V Downconverting Mixer 2.3dB Gain, 23.5dBm IIP3 and 12.5dB NF at 1900MHz, 5V/78mA Supply

LT5557 400MHz to 3.8GHz, 3.3V Downconverting Mixer 2.9dB Gain, 24.7dBm IIP3 and 11.7dB NF at 1950MHz, 3.3V/82mA Supply

LTC559x 600MHz to 4.5GHz Dual Downconverting Mixer

Family

8.5dB Gain, 26.5dBm IIP3, 9.9dB NF, 3.3V/380mA Supply

LTC5569 300MHz to 4GHz, 3.3V Dual Active

Downconverting Mixer

2dB Gain, 26.8dBm IIP3 and 11.7dB NF, 3.3V/180mA Supply

LTC554x 600MHz to 4GHz, 5V Downconverting Mixer Family 8dB Gain, >25dBm IIP3 and 10dB NF, 3.3V/200mA Supply

LT5578 400MHz to 2.7GHz Upconverting Mixer 27dBm OIP3 at 900MHz, 24.2dBm at 1.95GHz, Integrated RF Output Transformer

LT5579 1.5GHz to 3.8GHz Upconverting Mixer 27.3dBm OIP3 at 2.14GHz, NF = 9.9dB, 3.3V Supply, Single-Ended LO and RF Ports

LTC5588-1 200MHz to 6GHz I/Q Modulator 31dBm OIP3 at 2.14GHz, –160.6dBm/Hz Noise Floor

LTC5585 700MHz to 3GHz Wideband I/Q Demodulator >530MHz Demodulation Bandwidth, IIP2 Tunable to >80dBm, DC Offset Nulling

Amplifiers

LTC6430-15 High Linearity Differential IF Amp 20MHz to 2GHz Bandwidth, 15.2dB Gain, 50dBm OIP3, 3dB NF at 240MHz

LTC6431-15 High Linearity Single-Ended IF Amp 20MHz to 1.7GHz Bandwidth, 15.5dB Gain, 47dBm OIP3, 3.3dB NF at 240MHz

LTC6412 31dB Linear Analog VGA 35dBm OIP3 at 240MHz, Continuous Gain Range –14dB to 17dB

LT5554 Ultralow Distortion IF Digital VGA 48dBm OIP3 at 200MHz, 2dB to 18dB Gain Range, 0.125dB Gain Steps

RF Power Detectors

LT5538 40MHz to 3.8GHz Log Detector ±0.8dB Accuracy Over Temperature, –72dBm Sensitivity, 75dB Dynamic Range

LT5581 6GHz Low Power RMS Detector 40dB Dynamic Range, ±1dB Accuracy Over Temperature, 1.5mA Supply Current

LTC5582 40MHz to 10GHz RMS Detector ±0.5dB Accuracy Over Temperature, ±0.2dB Linearity Error, 57dB Dynamic Range

LTC5583 Dual 6GHz RMS Power Detector Up to 60dB Dynamic Range, ±0.5dB Accuracy Over Temperature, >50dB Isolation

ADCs

LTC2208 16-Bit, 130Msps ADC 78dBFS Noise Floor, >83dB SFDR at 250MHz

LTC2153-14 14-Bit, 310Msps Low Power ADC 68.8dBFS SNR, 88dB SFDR, 401mW Power Consumption

RF PLL/Synthesizer with VCO

LTC6946-1/

LTC6946-2/

LTC6946-3

Low Noise, Low Spurious Integer-N PLL with

Integrated VCO

373MHz to 5.79GHz, –157dBc/Hz WB Phase Noise Floor, –100dBc/Hz Closed-Loop

Phase Noise

LGND

LO–GNDLO+

OUT+

OUT–

GND

IN+

GND

IN–

10nF

VCC1 VCC2 IADJ

LTC5510

1µF

15nH

5510 TA17

50Ω

IFOUT

50MHz TO

1000MHz

50Ω

1150MHz

50Ω

TC1-1-13M+

1:1

TC4-19LN+

4:1

10nF

0.5pF

10nF

IF OUTPUT FREQUENCY (MHz)

GAIN (dB), OIP3 (dBm)

2RF-LO SPUR (dBc)

600 800400200 1000

–110

–100

–90

–80

–70

–60

–50

–40

–30

–20

–10

5510 TA18

2RF-LO

OIP3

fIN = 1150MHz

PIN = –7dBm

fLO = fIN + fOUT

PLO = 0dBm

TC = 25°C

Conversion Gain, OIP3 and 2RF-LO

Spur vs IF Output Frequency