LTC5596
1
5596f
For more information www.linear.com/LTC5596
Typical applicaTion
FeaTures DescripTion
100MHz to 40GHz
Linear-in-dB RMS Power Detector with
35dB Dynamic Range
The LT C
®
5596 is a high accuracy RMS power detector that
provides a very wide RF input bandwidth, from 100MHz
up to 40GHz. This makes the device suitable for a wide
range of RF and microwave applications, such as point-
to-point microwave links, instrumentation and power
control applications.
The DC output voltage of the detector is an accurate rep-
resentation of the average signal power applied to the RF
input. The response is linear-in-dB with 29mV/dB logarith-
mic slope over a 35dB dynamic range with typically better
than ±1dB accuracy. The detector is particularly suited for
measurement of waveforms with crest factor (CF) as high
as 12dB, and waveforms that exhibit a significant variation
of the crest factor during the measurement.
To achieve higher accuracy and lower output ripple, the
averaging bandwidth can be externally adjusted by a ca-
pacitor connected between the FLTR and OUT pins.
The enable interface switches the device between active
measurement mode and a low power shutdown mode.
100MHz to 40GHz RMS Power Detector Output Voltage vs Frequency
applicaTions
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Protected by U.S. patents, including 9330283 B2.
n Ultra Wide Matched Input Frequency Range:
100MHz to 40GHz
n 35dB Linear Dynamic Range (< ±1dB Error)
n 29mV/dB Logarithmic Slope
n ±1dB Flat Response from 200MHz to 30GHz
n Accurate RMS Power Measurement of High Crest
Factors (Up to 12dB) Modulated Waveforms
n Low Power Shutdown Mode
n Low Supply Current: 30mA at 3.3V (Typical)
n Small 2mm × 2mm Plastic DFN8 Package
n I-Grade: –40°C to 105°C Rated
H-Grade: –40°C to 125°C Rated
with Guaranteed Log-Slope and Log-Intercept
n ESD Rating: 3500V HBM, 1500V CDM
n Point-to-Point Microwave Links
n Instrumentation and Measurement Equipment
n Military Radios
n LTE, WiFi, WiMax Wireless Networks
n RMS Power Measurement
n Receive and Transmit Gain Control
n RF PA Transmit Power Control
VCC
GND
GND
EN
OUT
GND
RFIN FLTR
3.3V
5596 TA01a
LTC5596
100nF
1Ω
ENABLE
ADC
CFLTR
RF
IN
5596 TA01b
0.1
1
10
100
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
RF FREQUENCY (GHz)
OUTPUT VOLTAGE (V)
0dBm
–5dBm
–10dBm
–15dBm
–20dBm
–25dBm
–30dBm
–35dBm
LTC5596
2
5596f
For more information www.linear.com/LTC5596
pin conFiguraTionabsoluTe MaxiMuM raTings
(Note 1)
TOP VIEW
DC PACKAGE
8-LEAD (2mm × 2mm) PLASTIC DFN
4
1
2
36
5
7
8EN
GND
RFIN
GND
VCC
OUT
FLTR
GND
9
TJMAX = 150°C, θJC = 25°C/W
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
orDer inForMaTion
elecTrical characTerisTics
PARAMETER CONDITIONS
I-GRADE (NOTE 3) H-GRADE (NOTE 4)
UNITSMIN TYP MAX MIN TYP MAX
RF Input
Input Frequency Range 0.1 to 40 0.1 to 40 GHz
Input Impedance 52||50 52||50 Ω||fF
Detector Response (RFIN to OUT)
RF Input Power Range, TC = 25°C
±1dB LOG-Linearity Error (Note 5, 6)
fRF = 50MHz –33.2 to 6.3 –33.2 to 6.3 dBm
fRF = 100MHz –37.1 to 5.8 –37.1 to 5.8 dBm
fRF = 500MHz –40.8 to 3.3 –40.8 to 3.3 dBm
fRF = 2.14GHz –39.1 to 4.2 –39.1 to 4.2 dBm
fRF = 5.8GHz –39.7 to 3.7 –39.7 to 3.7 dBm
fRF = 7.6GHz –38.9 to 4.3 –38.9 to 4.3 dBm
fRF = 10GHz –39.0 to 4.2 –39.0 to 4.2 dBm
fRF = 12GHz –38.5 to 4.5 –38.5 to 4.5 dBm
fRF = 15GHz –37.5 to 5.5 –37.5 to 5.5 dBm
fRF = 18GHz –38.4 to 4.6 –38.4 to 4.6 dBm
fRF = 24GHz –39.3 to 0.2 –39.3 to 0.2 dBm
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC5596IDC#PBF LTC5596IDC#TRPBF LGNN 8-Lead 2mm × 2mm Plastic DFN –40°C to 105°C
LTC5596HDC#PBF LTC5596HDC#TRPBF LGNN 8-Lead 2mm × 2mm Plastic DFN –40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
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/. Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
http://www.linear.com/product/LTC5596#orderinfo
The
l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TC = 25°C. VCC = 3.3V, EN = 3.3V. CW, 50Ω source at RFIN, fRF = 2140MHz, test
circuit is shown in Figure 1. (Note 2).
Supply Voltage (VCC) ...............................................3.8V
RFIN Input Signal Power - Average .......................15dBm
RFIN Input Signal Power - Peak (Note 2) ..............20dBm
DC Voltage at RFIN ....................................... –0.3V to 1V
DC Voltage at FLTR ................................... –0.3V to 0.4V
DC Voltage at EN ....................................... –0.3V to 3.8V
TJMAX .................................................................... 150°C
Case Operating Temperature Range (TC):
I-Grade (Note 3) ................................. –40°C to 105°C
H-Grade (Note 4) ............................... –40°C to 125°C
Storage Temperature Range .................. –65°C to 150°C
LTC5596
3
5596f
For more information www.linear.com/LTC5596
elecTrical characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TC = 25°C. VCC = 3.3V, EN = 3.3V. CW, 50Ω source at RFIN, fRF = 2140MHz, test
circuit is shown in Figure 1. (Note 2).
PARAMETER CONDITIONS
I-GRADE (NOTE 3) H-GRADE (NOTE 4)
UNITSMIN TYP MAX MIN TYP MAX
fRF = 26GHz –37.8 to 5.0 –37.8 to 5.0 dBm
fRF = 28GHz –40.1 to -0.6 –40.1 to -0.6 dBm
fRF = 30GHz –39.8 to 3.1 –39.8 to 3.1 dBm
fRF = 35GHz –37.3 to 3.1 –37.3 to 3.1 dBm
fRF = 38GHz –34.2 to 3.6 –34.2 to 3.6 dBm
fRF = 40GHz –32.6 to 2.9 –32.6 to 2.9 dBm
fRF = 43.5GHz –28.2 to 4.6 –28.2 to 4.6 dBm
RF Input Power Range Over Operating
Temperature Range
±1dB LOG-Linearity Error (Note 5, 6)
fRF = 50MHz l–33.2 to 4.6 –28.4 to 3.0 dBm
fRF = 100MHz l–37.1 to 5.0 –37.1 to 3.0 dBm
fRF = 500MHz l–37.4 to –1.2 –35.9 to –1.2 dBm
fRF = 2.14GHz l–39.1 to –0.2 –35.2 to –0.2 dBm
fRF = 5.8GHz l–39.6 to –0.7 –35.3 to –0.7 dBm
fRF = 7.6GHz l–38.7 to –0.2 –34.7 to –0.2 dBm
fRF = 10GHz l–38.8 to –0.5 –34.5 to –0.5 dBm
fRF = 12GHz l–36.0 to 0.3 –34.1 to 0.3 dBm
fRF = 15GHz l–37.3 to 1.4 –33.5 to 1.4 dBm
fRF = 18GHz l–38.2 to –0.1 –35.2 to –0.1 dBm
fRF = 24GHz l–39.3 to –1.2 –36.0 to –1.2 dBm
fRF = 26GHz l–37.3 to –0.1 –34.8 to –0.1 dBm
fRF = 28GHz l–40.0 to –2.5 –36.4 to –2.5 dBm
fRF = 30GHz l–39.8 to –2.1 –35.3 to –2.1 dBm
±1.5dB LOG-Linearity Error fRF = 35GHz l–37.7 to 1.3 –32.3 to –1.5 dBm
±1.5dB LOG-Linearity Error fRF = 38GHz l–34.4 to 2.3 –29.2 to –0.2 dBm
±1.5dB LOG-Linearity Error fRF = 40GHz l–33.1 to 1.7 –27.1 to –0.9 dBm
±1.5dB LOG-Linearity Error fRF = 43.5GHz l–28.3 to 3.1 –22.1 to 0.3 dBm
Linear Dynamic Range, TC = 25°C
(Note 6)
fRF = 50MHz 39.5 39.5 dB
fRF = 100MHz 42.9 42.9 dB
fRF = 500MHz 44.1 44.1 dB
fRF = 2.14GHz 43.3 43.3 dB
fRF = 5.8GHz 43.3 43.3 dB
fRF = 7.6GHz 43.2 43.2 dB
fRF = 10GHz 43.1 43.1 dB
fRF = 12GHz 43.1 43.1 dB
fRF = 15GHz 43.0 43.0 dB
fRF = 18GHz 43.0 43.0 dB
fRF = 24GHz 39.5 39.5 dB
fRF = 26GHz 42.8 42.8 dB
fRF = 28GHz 39.5 39.5 dB
fRF = 30GHz 43.0 43.0 dB
LTC5596
4
5596f
For more information www.linear.com/LTC5596
PARAMETER CONDITIONS
I-GRADE (NOTE 3) H-GRADE (NOTE 4)
UNITSMIN TYP MAX MIN TYP MAX
fRF = 35GHz 40.4 40.4 dB
fRF = 38GHz 37.7 37.7 dB
fRF = 40GHz 35.6 35.6 dB
fRF = 43.5GHz 32.8 32.8 dB
Linear Dynamic Range Over Operating
Temperature Range (Note 6)
fRF = 50MHz l37.8 31.4 dB
fRF = 100MHz l42.1 40.1 dB
fRF = 500MHz l36.2 34.7 dB
fRF = 2.14GHz l38.9 35.1 dB
fRF = 5.8GHz l38.8 34.6 dB
fRF = 7.6GHz l38.5 34.5 dB
fRF = 10GHz l38.3 34.0 dB
fRF = 12GHz l36.3 34.4 dB
fRF = 15GHz l38.7 35.0 dB
fRF = 18GHz l38.1 35.1 dB
fRF = 24GHz l38.1 34.8 dB
fRF = 26GHz l37.2 34.8 dB
fRF = 28GHz l37.6 33.9 dB
fRF = 30GHz l37.7 33.2 dB
±1.5 dB LOG-Linearity Error fRF = 35GHz l39.0 30.7 dB
±1.5 dB LOG-Linearity Error fRF = 38GHz l36.7 29.0 dB
±1.5 dB LOG-Linearity Error fRF = 40GHz l34,7 26.2 dB
±1.5 dB LOG-Linearity Error fRF = 43.5GHz l31.4 22.4 dB
Logarithmic Slope, TC = 25°C (Note 7) fRF = 50MHz 28.2 27.2 mV/dB
fRF = 100MHz 28.9 28.9 mV/dB
fRF = 500MHz 28.2 28.2 mV/dB
fRF = 2.14GHz 29.3 28.0 29.3 30.5 mV/dB
fRF = 5.8GHz 28.7 28.7 mV/dB
fRF = 7.6GHz 28.8 28.8 mV/dB
fRF = 10GHz 28.8 28.8 mV/dB
fRF = 12GHz 28.9 28.9 mV/dB
fRF = 15GHz 29.0 29.0 mV/dB
fRF = 18GHz 28.9 28.9 mV/dB
fRF = 24GHz 28.9 28.9 mV/dB
fRF = 26GHz 29.1 29.1 mV/dB
fRF = 28GHz 29.1 29.1 mV/dB
fRF = 30GHz 28.9 28.9 mV/dB
fRF = 35GHz 29.0 29.0 mV/dB
fRF = 38GHz 29.2 29.2 mV/dB
fRF = 40GHz 29.5 29.5 mV/dB
fRF = 43.5GHz 29.7 29.7 mV/dB
elecTrical characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TC = 25°C. VCC = 3.3V, EN = 3.3V. CW, 50Ω source at RFIN, fRF = 2140MHz, test
circuit is shown in Figure 1. (Note 2).
LTC5596
5
5596f
For more information www.linear.com/LTC5596
PARAMETER CONDITIONS
I-GRADE (NOTE 3) H-GRADE (NOTE 4)
UNITSMIN TYP MAX MIN TYP MAX
Logarithmic Slope Over Operating
Temperature Range (Note 7)
fRF = 50MHz l27.6 to 28.6 27.6 to 28.6 mV/dB
fRF = 100MHz l28.2 to 29.4 28.2 to 29.4 mV/dB
fRF = 500MHz l27.4 to 28.9 27.4 to 28.9 mV/dB
fRF = 2.14GHz l28.0 to 29.5 27.5 28.0 to 29.5 31.0 mV/dB
fRF = 5.8GHz l28.0 to 29.4 28.0 to 29.4 mV/dB
fRF = 7.6GHz l28.1 to 29.5 28.1 to 29.5 mV/dB
fRF = 10GHz l28.1 to 29.5 28.1 to 29.5 mV/dB
fRF = 12GHz l28.2 to 29.5 28.2 to 29.5 mV/dB
fRF = 15GHz l28.3 to 29.4 28.3 to 29.4 mV/dB
fRF = 18GHz l28.2 to 29.6 28.2 to 29.6 mV/dB
fRF = 24GHz l28.3 to 29.5 28.3 to 29.5 mV/dB
fRF = 26GHz l28.4 to 29.6 28.4 to 29.6 mV/dB
fRF = 28GHz l28.4 to 29.6 28.3 to 29.5 mV/dB
fRF = 30GHz l28.3 to 29.5 28.3 to 29.5 mV/dB
fRF = 35GHz l28.4 to 29.3 28.4 to 29.3 mV/dB
fRF = 38GHz l28.6 to 29.4 28.6 to 29.4 mV/dB
fRF = 40GHz l28.8 to 29.7 28.8 to 29.7 mV/dB
fRF = 43.5GHz l29.2 to 29.7 29.1 to 29.7 mV/dB
Logarithmic Intercept, TC = 25°C (Note 8) fRF = 50MHz –33.1 –33.1 dBm
fRF = 100MHz –36.2 –36.2 dBm
fRF = 500MHz –39.9 –39.9 dBm
fRF = 2.14GHz –39.0 –40.5 –39.0 –37.3 dBm
fRF = 5.8GHz –38.7 –38.7 dBm
fRF = 7.6GHz –37.9 –37.9 dBm
fRF = 10GHz –38.0 –38.0 dBm
fRF = 12GHz –37.6 –37.6 dBm
fRF = 15GHz –36.5 –36.5 dBm
fRF = 18GHz –37.4 –37.4 dBm
fRF = 24GHz –38.4 –38.4 dBm
fRF = 26GHz –36.8 –36.8 dBm
fRF = 28GHz –37.1 –37.1 dBm
fRF = 30GHz –38.9 –38.9 dBm
fRF = 35GHz –36.3 –36.3 dBm
fRF = 38GHz –33.2 –33.2 dBm
fRF = 40GHz –31.7 –31.7 dBm
fRF = 43.5GHz –27.2 –27.2 dBm
Logarithmic Intercept Over Operating
Temperature Range (Note 8)
fRF = 50MHz l–32.6 to –31.5 –32.6 to –31.3 dBm
fRF = 100MHz l–36.5 to –35.5 –36.5 to –35.4 dBm
fRF = 500MHz l–40.4 to –38.9 –40.4 to –38.6 dBm
fRF = 2.14GHz l–39.7 to –37.2 –40.8 –39.7 to –37.0 –36.3 dBm
elecTrical characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TC = 25°C. VCC = 3.3V, EN = 3.3V. CW, 50Ω source at RFIN, fRF = 2140MHz, Test
circuit is shown in Figure 1. (Note 2).
LTC5596
6
5596f
For more information www.linear.com/LTC5596
PARAMETER CONDITIONS
I-GRADE (NOTE 3) H-GRADE (NOTE 4)
UNITSMIN TYP MAX MIN TYP MAX
fRF = 5.8GHz l–39.2 to –37.7 –39.2 to –37.4 dBm
fRF = 7.6GHz l–38.5 to –36.9 –38.5 to –36.7 dBm
fRF = 10GHz l–38.6 to –37.0 –38.6 to –36.7 dBm
fRF = 12GHz l–38.1 to –36.6 –38.1 to –36.3 dBm
fRF = 15GHz l–37.0 to –35.7 –37.0 to –35.5 dBm
fRF = 18GHz l–38.1 to –36.6 –38.1 to –36.4 dBm
fRF = 24GHz l–38.8 to –37.5 –38.8 to –37.3 dBm
fRF = 26GHz l–37.5 to –36.1 –37.5 to –35.9 dBm
fRF = 28GHz l–37.7 to –36.2 –37.7 to –35.9 dBm
fRF = 30GHz l–39.4 to –38.3 –39.7 to –38.0 dBm
fRF = 35GHz l–37.1 to –35.2 –37.1 to –34.9 dBm
fRF = 38GHz l–34.1 to –32.0 –34.1 to –31.7 dBm
fRF = 40GHz l–32.8 to –30.6 –32.8 to –30.3 dBm
fRF = 43.5GHz l–28.3 to –26.2 –28.3 to –25.9 dBm
Linear Dynamic Range for Various CDMA 9Ch fwd –39.7 to 1.7 –39.7 to 1.7 dB
Modulation Formats (Note 9) CDMA 32Ch fwd –39.6 to 1.7 –39.6 to 1.7 dB
CDMA 64Ch fwd –39.5 to 1.7 –39.5 to 1.7 dB
CDMA 3 Carriers –40.4 to 3.0 –40.4 to 3.0 dB
CDMA 4 Carriers –40.3 to 2.7 –40.3 to 2.7 dB
WCDMA 1Ch Up –39.9 to 1.8 –39.9 to 1.8 dB
WCDMA 1Ch Down –39.9 to 1.7 –39.9 to 1.7 dB
WCDMA 2 Carriers –40.0 to 1.9 –40.0 to 1.9 dB
WCDMA 3 Carriers –40.4 to 2.0 –40.4 to 2.0 dB
WCDMA 4 Carriers –40.3 to 1.7 –40.3 to 1.7 dB
AWGN 5MHz BW –40.2 to 2.6 –40.2 to 2.6 dB
AWGN 10MHz BW –40.2 to 3.1 –40.2 to 3.1 dB
AWGN 15MHz BW –40.1 to 3.1 –40.1 to 3.1 dB
Propagation Delay (Note 10) Pin from –55dBm to
0dBm
1.2 1.2 μs
OUT Interface
Output DC Voltage No RF Signal Present
EN = 1.1V
1.0 5.0 1.0 5.0 mV
Pin = 10dBm
EN = 1.1V
1.150 1.2 1.250 1.150 1.2 1.250 V
Output Voltage Droop 25mA Sourcing –35 6 20 –35 6 20 mV
25mA Sinking 30 30 mV
Integrated Output Noise 1kHz to 6.5kHz
PIN = 0dBm
22 22 μVRMS
Rise Time (Note 11) 50Ω Load at OUT 2.9 2.9 μs
Fall Time (Note 12) 50Ω Load at OUT 8.1 8.1 μs
elecTrical characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TC = 25°C. VCC = 3.3V, EN = 3.3V. CW, 50Ω source at RFIN, fRF = 2140MHz, input
power PIN = 0dBm, test circuit is shown in Figure 1. (Note 2).
LTC5596
7
5596f
For more information www.linear.com/LTC5596
PARAMETER CONDITIONS
I-GRADE (NOTE 3) H-GRADE (NOTE 4)
UNITSMIN TYP MAX MIN TYP MAX
Enable (EN) Low = Off, High = On
EN Input High Voltage (On) l1.1 1.1 V
EN Input Low Voltage (Off) l0.6 0.6 V
EN Pin Input Current 50 500 50 500 nA
Turn ON Time (Note 13) 50Ω Load at OUT 8 8 µs
Turn OFF Time (Note 14) 50Ω Load at OUT
1MΩ||11pF Load at OUT
45
100
45
100
ns
µs
Power Supply
Supply Voltage l2.7 3.3 3.6 2.7 3.3 3.6 V
Active Supply Current EN = 3.3V 25 30 35 25 30 35 mA
Shutdown Supply Current EN = 0V 50 500 50 500 nA
elecTrical characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TC = 25°C. VCC = 3.3V, EN = 3.3V. CW, 50Ω source at RFIN, fRF = 2140MHz, Test
circuit is shown in Figure 1. (Note 2).
50MHz to 38GHz, and 0.25dB is added for 40GHz and 43.5GHz to center
the errors over the full temperature range. See also the Application Section
for an explanation of measurement error metrics.
Note 6: Range for which the LOG-Linearity Error is within ±1dB.
Note 7: Slope of the best fit straight line obtained by linear regression.
Note 8: Extrapolated input power level (straight line obtained by linear
regression) where the voltage at OUT equals 0V.
Note 9: Power range for which LOG-Linearity Error is within ±1dB, relative
to best fit straight line for CW data (see Note 5).
Note 10: Delay from 50% change in RFIN to 50% change in output voltage.
Note 11: Time required to change voltage at OUT pin from 10% to 90% of
final value. Input power stepped from –55dBm to 0dBm.
Note 12: Time required to change voltage at OUT pin from 90% to 10% of
initial value. Input power stepped from 0dBm to –55dBm.
Note 13: Time required to change voltage at OUT pin to 90% of final value.
Input power 0dBm.
Note 14: Time required to change voltage at OUT pin to 10% of initial
value. Input power 0dBm. For higher load impedance the turn-off time
will be (much) larger as the OUT interface is high impedance in shutdown
mode.
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. The voltage on all pins should not exceed 3.8V,
VCC + 0.3V or be less than –0.3V, otherwise damage to the ESD diodes
may occur.
Note 2: Not production tested. Guaranteed by design and correlation to
production tested parameters.
Note 3: The LTC5596IDD is guaranteed functional over the case
temperature range –40°C to 105°C. All limits at –40°C and 105°C are
guaranteed by design and production sample testing.
Note 4: The LTC5596HDD is guaranteed functional over the case
temperature range –40°C to 125°C. All limits at –40°C and 125°C are
guaranteed by 100% production testing.
Note 5: LOG-Linearity Error is the input-referred power measurement
error relative to the best fit straight line (VOUT vs pin in dBm) obtained by
linear regression at TC = 25°C. The input power range used for the linear
regression is from –32dBm to 5dBm for 50MHz, from –37dBm to –5dBm
for 100MHz through 35GHz, from –34dBm to –5dBm for 38GHz, from
–32dBm to –5dBm for 40GHz and from –28dBm to –5dBm for 43.5GHz.
An offset of 0.5dB is added to the LOG-intercept for frequencies from
LTC5596
8
5596f
For more information www.linear.com/LTC5596
Typical perForMance characTerisTics
VCC = 3.3V, EN = 3.3V, TC = 25°C, CW input, 50Ω
source at fRF = 2140MHz, unless otherwise noted.
Output Voltage, Linearity Error vs
RF Input Power at 2.14GHz
Output Voltage, Linearity Error vs
RF Input Power at 5.8GHz
Output Voltage, Linearity Error vs
RF Input Power at 7.6GHz
Output Voltage, Linearity Error vs
RF Input Power at 10GHz
Output Voltage, Linearity Error vs
RF Input Power at 12GHz
Output Voltage, Linearity Error vs
RF Input Power at 15GHz
Output Voltage, Linearity Error vs
RF Input Power at 50MHz
Output Voltage, Linearity Error vs
RF Input Power at 100MHz
Output Voltage, Linearity Error vs
RF Input Power at 500MHz
5596 G1
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
4
3
2
1
0
–1
–2
–3
INPUT POWER (dBm)
OUTPUT VOLTAGE (V)
LOG-LINEARITY ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G2
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
4
3
2
1
0
–1
–2
–3
INPUT POWER (dBm)
OUTPUT VOLTAGE (V)
LOG-LINEARITY ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G3
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
4
3
2
1
0
–1
–2
–3
INPUT POWER (dBm)
OUTPUT VOLTAGE (V)
LOG-LINEARITY ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G4
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
4
3
2
1
0
–1
–2
–3
INPUT POWER (dBm)
OUTPUT VOLTAGE (V)
LOG-LINEARITY ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G5
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
4
3
2
1
0
–1
–2
–3
INPUT POWER (dBm)
OUTPUT VOLTAGE (V)
LOG-LINEARITY ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G6
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
4
3
2
1
0
–1
–2
–3
INPUT POWER (dBm)
OUTPUT VOLTAGE (V)
LOG-LINEARITY ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G7
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
4
3
2
1
0
–1
–2
–3
INPUT POWER (dBm)
OUTPUT VOLTAGE (V)
LOG-LINEARITY ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G8
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
4
3
2
1
0
–1
–2
–3
INPUT POWER (dBm)
OUTPUT VOLTAGE (V)
LOG-LINEARITY ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G9
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
4
3
2
1
0
–1
–2
–3
INPUT POWER (dBm)
OUTPUT VOLTAGE (V)
LOG-LINEARITY ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
LTC5596
9
5596f
For more information www.linear.com/LTC5596
Typical perForMance characTerisTics
VCC = 3.3V, EN = 3.3V, TC = 25°C, CW input, 50Ω
source at fRF = 2140MHz, unless otherwise noted.
Output Voltage, Linearity Error vs
RF Input Power at 28GHz
Output Voltage, Linearity Error vs
RF Input Power at 30GHz
Output Voltage, Linearity Error vs
RF Input Power at 35GHz
Output Voltage, Linearity Error vs
RF Input Power at 38GHz
Output Voltage, Linearity Error vs
RF Input Power at 40GHz
Output Voltage, Linearity Error vs
RF Input Power at 43.5GHz
Output Voltage, Linearity Error vs
RF Input Power at 24GHz
Output Voltage, Linearity Error vs
RF Input Power at 26GHz
Output Voltage, Linearity Error vs
RF Input Power at 18GHz
5596 G10
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
4
3
2
1
0
–1
–2
–3
INPUT POWER (dBm)
OUTPUT VOLTAGE (V)
LOG-LINEARITY ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G11
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
4
3
2
1
0
–1
–2
–3
INPUT POWER (dBm)
OUTPUT VOLTAGE (V)
LOG-LINEARITY ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G12
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
4
3
2
1
0
–1
–2
–3
INPUT POWER (dBm)
OUTPUT VOLTAGE (V)
LOG-LINEARITY ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G13
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
4
3
2
1
0
–1
–2
–3
INPUT POWER (dBm)
OUTPUT VOLTAGE (V)
LOG-LINEARITY ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G14
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
4
3
2
1
0
–1
–2
–3
INPUT POWER (dBm)
OUTPUT VOLTAGE (V)
LOG-LINEARITY ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G15
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
4
3
2
1
0
–1
–2
–3
INPUT POWER (dBm)
OUTPUT VOLTAGE (V)
LOG-LINEARITY ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G16
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
4
3
2
1
0
–1
–2
–3
INPUT POWER (dBm)
OUTPUT VOLTAGE (V)
LOG-LINEARITY ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G17
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
4
3
2
1
0
–1
–2
–3
INPUT POWER (dBm)
OUTPUT VOLTAGE (V)
LOG-LINEARITY ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G18
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
4
3
2
1
0
–1
–2
–3
INPUT POWER (dBm)
OUTPUT VOLTAGE (V)
LOG-LINEARITY ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
LTC5596
10
5596f
For more information www.linear.com/LTC5596
Typical perForMance characTerisTics
Linearity Error Temperature
Variation from 25°C at 2.14GHz
Linearity Error Temperature
Variation from 25°C at 5.8GHz
Linearity Error Temperature
Variation from 25°C at 7.6GHz
Linearity Error Temperature
Variation from 25°C at 10GHz
Linearity Error Temperature
Variation from 25°C at 12GHz Linearity Error Temperature
Variation from 25°C at 15GHz
Linearity Error Temperature
Variation from 25°C at 100MHz
Linearity Error Temperature
Variation from 25°C at 500MHz
Linearity Error Temperature
Variation from 25°C at 50MHz
5596 G19
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
3.0
2.5
2.0
1.5
1.0
0.5
0
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
INPUT POWER (dBm)
TEMPERATURE DRIFT ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G20
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
INPUT POWER (dBm)
TEMPERATURE DRIFT ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596_G21
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
INPUT POWER (dBm)
TEMPERATURE DRIFT ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G22
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
INPUT POWER (dBm)
TEMPERATURE DRIFT ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G23
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
INPUT POWER (dBm)
TEMPERATURE DRIFT ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G24
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
INPUT POWER (dBm)
TEMPERATURE DRIFT ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G25
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
INPUT POWER (dBm)
TEMPERATURE DRIFT ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596_G26
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
INPUT POWER (dBm)
TEMPERATURE DRIFT ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G27
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
INPUT POWER (dBm)
TEMPERATURE DRIFT ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
VCC = 3.3V, EN = 3.3V, TC = 25°C, CW input, 50Ω
source at fRF = 2140MHz, unless otherwise noted.
LTC5596
11
5596f
For more information www.linear.com/LTC5596
Typical perForMance characTerisTics
Linearity Error Temperature
Variation from 25°C at 28GHz
Linearity Error Temperature
Variation from 25°C at 30GHz
Linearity Error Temperature
Variation from 25°C at 38GHz
Linearity Error Temperature
Variation from 25°C at 35GHz
Linearity Error Temperature
Variation from 25°C at 40GHz
Linearity Error Temperature
Variation from 25°C at 24GHz
Linearity Error Temperature
Variation from 25°C at 26GHz
Linearity Error Temperature
Variation from 25°C at 18GHz
Linearity Error Temperature
Variation from 25°C at 43.5GHz
5596 G28
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
INPUT POWER (dBm)
TEMPERATURE DRIFT ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G29
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
INPUT POWER (dBm)
TEMPERATURE DRIFT ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G30
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
INPUT POWER (dBm)
TEMPERATURE DRIFT ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596_G31
-45
-40
-35
-30
-25
-20
-15
-10
-5
0
5
10
3.0
2.5
2.0
1.5
1.0
0.5
0
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
INPUT POWER (dBm)
TEMPERATURE DRIFT ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G32
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
INPUT POWER (dBm)
TEMPERATURE DRIFT ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G33
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
INPUT POWER (dBm)
TEMPERATURE DRIFT ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 34
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
INPUT POWER (dBm)
TEMPERATURE DRIFT ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G35
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
INPUT POWER (dBm)
TEMPERATURE DRIFT ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
5596 G36
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
INPUT POWER (dBm)
TEMPERATURE DRIFT ERROR (dB)
125°C
105°C
85°C
25°C
–40°C
–55°C
VCC = 3.3V, EN = 3.3V, TC = 25°C, CW input, 50Ω
source at fRF = 2140MHz, unless otherwise noted.
LTC5596
12
5596f
For more information www.linear.com/LTC5596
Typical perForMance characTerisTics
5596 G42
0
5
10
15
20
25
30
35
40
0
–5
–10
–15
–20
–25
–30
RF FREQUENCY (GHz)
RETURN LOSS (dB)
EN = High
EN = Low
5596 G43
0.01
0.1
1
10
100
30.0
29.5
29.0
28.5
28.0
27.5
27.0
RF FREQUENCY (GHz)
LOGARITHMIC SLOPE (mV/dB)
Power Measurement Error Relative to
CW for Various Modulation Formats
Output Voltage vs RF Input Power for
Various Modulation Formats
Input Return Loss vs Frequency
Linearity Error vs RF Input Power for
Various Modulation Formats, Regression
Using CW Slope and Intercept Values
Output Transient Response to RF
Input Pulse
Output Transient Response with
CW RF and Enable Pulse Logarithmic Slope vs Frequency
5596 G37
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
INPUT POWER (dBm)
OUTPUT VOLTAGE (V)
AWGN-5MHz
AWGN-10MHz
AWGN-15MHz
CW
IS95-3Carr
IS95-4Carr
IS95-32fwd
IS95-64fwd
IS95-9fwd
WCDMA-2Carr
WCDMA-3Carr
WCDMA-4Carr
WCDMA-DPCH1
WCDMA-DPCCH
5596 G38
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
4
3
2
1
0
–1
–2
–3
INPUT POWER (dBm)
LOG-LINEARITY ERROR (dB)
AWGN-5MHz
AWGN-10MHz
AWGN-15MHz
CW
IS95-32fwd
IS95-3Carr
IS95-4Carr
IS95-64fwd
IS95-9fwd
WCDMA-2Carr
WCDMA-3Carr
WCDMA-4Carr
WCDMA-DPCCH
WCDMA-DPCH1
5596 G39
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
INPUT POWER (dBm)
ERROR RELATIVE TO CW (dB)
AWGN-5MHz
AWGN-10MHz
AWGN-15MHz
IS95-32fwd
IS95-3Carr
IS95-4Carr
IS95-64fwd
IS95-9fwd
WCDMA-2Carr
WCDMA-3Carr
WCDMA-4Carr
WCDMA-DPCCH
WCDMA-DPCH1
5596 G40
PULSE EN
0
5
10
15
20
25
30
35
40
45
50
1.2
1.0
0.8
0.6
0.4
0.2
0
6
3
0
TIME (μs)
OUTPUT VOLTAGE (V)
PULSE ENABLE (V)
5dBm
0dBm
–5dBm
–10dBm
–15dBm
–20dBm
–25dBm
–30dBm
–35dBm
5596 G41
EN
0
5
10
15
20
25
30
35
1.2
1.0
0.8
0.6
0.4
0.2
0
6
3
0
TIME (μs)
OUTPUT VOLTAGE (V)
ENABLE (V)
10dBm
0dBm
–10dBm
–20dBm
–30dBm
VCC = 3.3V, EN = 3.3V, TC = 25°C, CW input, 50Ω
source at fRF = 2140MHz, unless otherwise noted.
LTC5596
13
5596f
For more information www.linear.com/LTC5596
5596 G44
0.01
0.1
1
10
100
–25
–30
–35
–40
–45
RF FREQUENCY (GHz)
LOGARITHMIC INTERCEPT (dBm)
Logarithmic Intercept vs
Frequency
Typical perForMance characTerisTics
Power Measurement Error vs Frequency,
Relative to Response at 5.8GHz Output Voltage vs RF Input Power
Output Voltage vs Output Current
(Positive=Sourcing, Negative=Sinking)
Detector Error vs Output Load Current
(Positive = Sourcing, Negative = Sinking) Output Voltage vs Supply Voltage
5596 G45
0.1
1
10
100
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
RF FREQUENCY (GHz)
OUTPUT VOLTAGE (V)
0dBm
–5dBm
–10dBm
–15dBm
–20dBm
–25dBm
–30dBm
–35dBm
5596 G46
0.1
10
1
100
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
RF FREQUENCY (GHz)
POWER MEASUREMENT ERROR (dB)
0dBm
–5dBm
–10dBm
–15dBm
–20dBm
–25dBm
–30dBm
–35dBm
5596 G47
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
INPUT POWER (dBm)
OUTPUT VOLTAGE (V)
43.5GHz
40GHz
38GHz
35GHz
30GHz
28GHz
26GHz
24GHz
18GHz
15GHz
12GHz
10GHz
7.60GHz
5.80GHz
2.14GHz
500MHz
100MHz
50MHz
5596 G48
–40
–30
–20
–10
0
10
20
30
40
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE (V)
5dBm
–5dBm
–15dBm
–25dBm
–35dBm
5596 G49
–40
–30
–20
–10
0
10
20
30
40
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
OUTPUT CURRENT (mA)
POWER MEASUREMENT ERROR (dB)
5dBm
–5dBm
–15dBm
–25dBm
–35dBm
5596 G50
2
2.2
2.4
2.6
2.8
3
3.2
3.4
3.6
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
SUPPLY VOLTAGE (V)
OUTPUT VOLTAGE (V)
5dBm
–5dBm
–15dBm
–25dBm
–35dBm
Output Voltage vs Frequency
VCC = 3.3V, EN = 3.3V, TC = 25°C, CW input, 50Ω
source at fRF = 2140MHz, unless otherwise noted.
LTC5596
14
5596f
For more information www.linear.com/LTC5596
Typical perForMance characTerisTics
Output Voltage at –35dBm
Cumulative Distribution
Output Voltage at –30dBm
Cumulative Distribution
Output Voltage at –25dBm
Cumulative Distribution
Output Voltage at –20dBm
Cumulative Distribution
Output Voltage at –15dBm
Cumulative Distribution
Supply Current vs RF Input Power
Supply Current vs Supply Voltage
Output Voltage at No RF Input Power
Cumulative Distribution
5596 G52
0
0.4
0.8
1.2
1.6
2
2.4
2.8
3.2
3.6
40
35
30
25
20
15
10
5
0
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
5dBm
–5dBm
–15dBm
–25dBm
–35dBm
–45dBm
5596 G53
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
5
10
40
35
30
25
INPUT POWER (dBm)
SUPPLY CURRENT (mA)
125°C
105°C
85°C
25°C
–40°C
–55°C
Power Measurement Error vs Supply
Voltage, Relative to 3.3V
5596 G51
2
2.2
2.4
2.6
2.8
3
3.2
3.4
3.6
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
SUPPLY VOLTAGE (V)
POWER MEASUREMENT ERROR (dB)
5dBm
–5dBm
–15dBm
–25dBm
–35dBm
0
0.4
0.8
1.2
1.6
2
100
80
60
40
20
0
OUTPUT VOLTAGE (mV)
CUMULATIVE PROBABILITY (%)
125°C
105°C
25°C
–40°C
–55°C
5596 G54
60
80
100
120
140
160
100
80
60
40
20
0
125°C
105°C
25°C
–40°C
–55°C
5596 G55
OUTPUT VOLTAGE (mV)
CUMULATIVE PROBABILITY (%)
220
240
260
280
300
320
100
80
60
40
20
0
125°C
105°C
25°C
–40°C
–55°C
5596 G56
OUTPUT VOLTAGE (mV)
CUMULATIVE PROBABILITY (%)
360
380
400
420
440
460
100
80
60
40
20
0
125°C
105°C
25°C
–40°C
–55°C
5596 G57
OUTPUT VOLTAGE (mV)
CUMULATIVE PROBABILITY (%)
500
520
540
560
580
600
100
80
60
40
20
0
125°C
105°C
25°C
–40°C
–55°C
5596 G58
OUTPUT VOLTAGE (mV)
CUMULATIVE PROBABILITY (%)
640
660
680
700
720
740
100
80
60
40
20
0
125°C
105°C
25°C
–40°C
–55°C
5596 G59
OUTPUT VOLTAGE (mV)
CUMULATIVE PROBABILITY (%)
VCC = 3.3V, EN = 3.3V, TC = 25°C, CW input, 50Ω
source at fRF = 2140MHz, unless otherwise noted.
LTC5596
15
5596f
For more information www.linear.com/LTC5596
Output Voltage at –10dBm
Cumulative Distribution
Typical perForMance characTerisTics
Output Voltage at –5dBm
Cumulative Distribution
Output Voltage at 0dBm
Cumulative Distribution
Output Voltage at 5dBm
Cumulative Distribution
Logarithmic Slope Cumulative
Distribution
Logarithmic Intercept Cumulative
Distribution
Supply Current Cumulative
Distribution
780
800
820
840
860
880
100
80
60
40
20
0
125°C
105°C
25°C
–40°C
–55°C
5596 G60
OUTPUT VOLTAGE (mV)
CUMULATIVE PROBABILITY (%)
920
940
960
980
1000
1020
100
80
60
40
20
0
125°C
105°C
25°C
–40°C
–55°C
5596 G61
OUTPUT VOLTAGE (mV)
CUMULATIVE PROBABILITY (%)
1080
1100
1120
1140
1160
1180
1200
1220
100
80
60
40
20
0
125°C
105°C
25°C
–40°C
–55°C
5596 G62
OUTPUT VOLTAGE (mV)
CUMULATIVE PROBABILITY (%)
1170
1180
1190
1200
1210
100
80
60
40
20
0
125°C
105°C
25°C
–40°C
–55°C
5596 G63
OUTPUT VOLTAGE (mV)
CUMULATIVE PROBABILITY (%)
28.0
28.5
29
29.5
30
30.5
100
80
60
40
20
0
125°C
105°C
25°C
–40°C
–55°C
5596 G64
LOGARITHMIC SLOPE (mV/dB)
CUMULATIVE PROBABILITY (%)
–40.5
–40
–39.5
–39
–38.5
–38
–37.5
100
80
60
40
20
0
125°C
105°C
25°C
–40°C
–55°C
5596 G65
LOGARITHMIC INTERCEPT (dBm)
CUMULATIVE PROBABILITY (%)
24
26
28
30
32
34
36
100
80
60
40
20
0
SUPPLY CURRENT (mA)
125°C
105°C
25°C
–40°C
–55°C
5596 G66
CUMULATIVE PROBABILITY (%)
VCC = 3.3V, EN = 3.3V, TC = 25°C, CW input, 50Ω
source at fRF = 2140MHz, unless otherwise noted.
LTC5596
16
5596f
For more information www.linear.com/LTC5596
pin FuncTions
VCC (Pin 1): Power Supply Pin. Typical current consump-
tion is 30mA at room temperature. This pin should be
externally bypassed with a 100nF capacitor
.
OUT(Pin 2): Detector Output. The DC voltage at this pin
varies linearly with the RF input power level in dBm. This
output is able to drive a 50Ω load. To avoid permanent
damage, do not short to VCC or GND. In shutdown mode
(EN = Low), this interface become high impedance, to
avoid discharge of capacitors in an external ripple filter.
FLTR (Pin 3): An optional capacitor connected between
FLTR and OUT (Pin 2) reduces the detector ripple averaging
bandwidth. This will also increase the rise and fall times
of the detector. To avoid permanent damage to the circuit,
the DC voltage at this pin should not exceed 0.4V.
GND (Pins 4, 5, 7, Exposed Pad Pin 9): Circuit Ground.
All ground pins are internally connected together. Pins 5
and 7 should be used as RF return ground and connected
to the transmission line interfacing to RFIN (pin 6).
RFIN (Pin 6): RF Input. This pin is internally DC-coupled to
GND through a 50Ω termination resistor. To avoid damage
to the internal circuit, the DC voltage applied to this pin
should not exceed 1V. The ground-signal-ground arrange-
ment of pins 5 through 7 support termination of pin 6 by
a high frequency transmission line, such as a grounded
co-planar waveguide (GCPW). No external decoupling
capacitor is necessary as long as the DC voltage on pin
6 is kept below 1V.
EN (Pin 8): Chip Enable. A voltage above 1.1V applied to
this pin will bring the device into normal operating mode.
A voltage below 0.6V will bring the device into a low power
shutdown mode. Do not float this pin.
LTC5596
17
5596f
For more information www.linear.com/LTC5596
TesT circuiT
REF DES VALUE SIZE PART NUMBER
C1 100nF 0402 AVX GX02YD104KAT2, 40GHz
C3, C4 NC 0402
C8 10pF 0402 MURATA GRM155C1H100JA01D
R1 470Ω 0402 VISHAY CRCW0402470RFKED
R2 1Ω 0402 VISHAY CRCW04021R00FNED
R7 NC 0402
J1 2.9mm JACK TO EDGE-
LAUNCH, DC-40GHz
SRI CONNECTOR, 25-146-1000-93, or
SOUTHWEST 1092-03A-5
J3 SMA 50Ω EDGE-LAUNCH E.F
. JOHNSON, 142-0701-851
Figure 2a. Top Side of Evaluation Board
Figure 1. Test Schematic Optimized for 100MHz to 40 GHz
Figure 2b. Bottom Side of Evaluation Board
R7
NC
VCC
GND
GND
EN
OUT
J1
RF INPUT
GND
RFIN FLTR
3.3V
5596 F01
LTC5596
C8
10pF 8
7
6
5
1
2
3
4
R1
470Ω
9
EXPOSED PAD
R2
1Ω
C3
NC
C1
100nF
J3
OUT
EN
C4
NC
5596_F02a
5596 F02a
5596_F02b
5596 F02b
LTC5596
18
5596f
For more information www.linear.com/LTC5596
Figure 3. Simplified Schematic of the RFIN Interface
Figure 4. Grounded Co-Planar Waveguide (GCPW) to
Interface RFIN
applicaTions inForMaTion
The LTC5596 is a true RMS RF power detector, capable
of measuring an RF signal over the frequency range from
100MHz to 40GHz, independent of input waveforms with
different crest factors such as CW, WCDMA, OFDM (LTE
and WiFi) signals. Up to 35dB dynamic range is achieved
with a very stable output within the full case temperature
range.
RF Input
The single-ended RF input is internally matched to 50Ω,
both in active mode and the low power shutdown mode.
The DC voltage applied to this pin should be kept below
1V, to avoid damage to the internal circuitry, depicted in
Figure 3.
possible; the evaluation board uses vias with a diameter
of 6mils; 8mils including the metal edge ring (donut).
Together with GND Pin 5 and Pin 7, RFIN (Pin 6) forms
a ground-signal-ground configuration that can interface
directly with a co-planar waveguide on the PCB. The
recommended design is depicted in Figure 4.
To minimize reflections at high frequencies, the center strip
has been chosen the same width as the RFIN package pin
(10mils). Likewise, the center pin of the 40GHz 2.92mm
connector terminating the other side of the GCPW has a
10mils width as well.
The LTC5596 evaluation board uses a 5mils thick layer of
Rogers RO3003 material for the top substrate to achieve
low dielectric losses up to 40GHz. The other two sub-
strates on the board are regular FR-4 material. Using this
configuration, a 50Ω characteristic impedance is obtained
for a 9mils gap width between the center strip and the
two ground return conductors. Via’s, connecting the top
ground conductors with the second metal ground plane,
should be placed along the edge of the GCPW top ground
conductors. Via dimensions should be kept as small as
FLTR Interface (Pin 3):
This pin enables additional suppression of high frequency
ripple in the detector output signal, at the expense of a
slower detector response (longer rise time, fall time and
propagation delay). As depicted in Figure 1, an external
capacitor C3 connected between FLTR and OUT enlarges
the amount of feedback capacitance across the output
amplifier, and reduces the output filter bandwidth with-
out affecting the current drive capability of the LTC5596.
Suitable capacitance values are in the range from 10pF
up to 1nF, but the total of feedback and load capacitance
(from OUT to signal ground) should not exceed 1nF.
Larger capacitance values may result in instability of the
output driver.
To avoid permanent damage to the chip, the DC voltage
at the FLTR pin should not exceed 0.4V. Similarly, it is not
recommended to supply a DC bias current to this pin in
excess of about 100μA.
OUT Interface (Pin 2):
The OUT interface, depicted in Figure 5, is a class-AB
CMOS output stage that can source and sink over 20mA
of load current.
It is able to drive a load resistance of 50Ω (or higher)
over the full output voltage range. Short-circuiting the
OUT interface should be avoided though, as this can lead
to permanent damage of the device. The output driver
is stable for capacitive loads up to at least 1nF. This
includes any external feedback capacitance between OUT
and FLTR, which is essentially experienced as a load by
the driver amplifier.
RFIN
5596 F03
50Ω
LTC5596
6
50fF
174pH
10mils
9mils 9mils
5mils
RO3003
VIA VIA 5596 F04
LTC5596
19
5596f
For more information www.linear.com/LTC5596
applicaTions inForMaTion
Additional ripple filtering using larger capacitances can
be achieved by connecting a series-RC low pass filter to
OUT. This however reduces the current drive capability
of the output signal, since the filter resistor is placed in
series with OUT.
In general, the rise time of the LTC5596 is much shorter
than the fall time. An external feedback capacitor between
FLTR and OUT increases both rise and fall time, while an RC
filter connected in series with OUT will primarily increase
the rise time (as long as the time constant is smaller than
the fall time).
Enable Interface (Pin 8)
A simplified schematic of the EN Pin interface is shown
in Figure 7. The CMOS logic brings the device in its active
operating mode for input voltages above 1.1V, input volt-
ages below 0.6V. bring it into a low power shutdown mode.
The voltage applied to the EN pin should never exceed VCC
by more than 0.3V., and never decrease below GND by
0.3V. Otherwise, permanent damage to the ESD diodes
may occur. Placing an external resistor of at least several
hundred Ω in series with the EN interface is an effective
way to avoid such damage, that limits the current flowing
through the ESD diodes (see Figure 1).
The OUT interface becomes high impedance when the
device is put into shutdown mode (EN = Low). This pre-
vents discharge of capacitors in a ripple filter connected
to the OUT interface. The fall time of the voltage at the
OUT interface when the device is turned off (high to low
transition of EN) is therefore dependent on the load imped-
ance. Figure 6 shows the output voltage transient when
the device is turned off for a 1MΩ load impedance and a
50Ω load impedance.
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
voltage overshooting at the initial transient that exceeds
the maximum rating. A supply voltage ramp time of greater
than 1ms is recommended. In case this voltage ramp
time is not controllable, a small series resistor should
be inserted in between VCC Pin and the supply voltage
source to mitigate the problem and self protect the IC.
The 1Ω resistor R2 and capacitor C1 shown in Figure 1
serve this purpose.
Figure 5. Simplified Schematic of the OUT Interface
Figure 6. Output Voltage Turn-Off Transient for 1MΩ||11pF and
50Ω Load Impedance. Input Power 0dBm, Input Frequency
2140MHz.
Figure 7. Simplified Schematic of the EN Interface
5596 F05
VCC
2
5596 F07
VCC
INTERNAL
LOGIC
CIRCUIT
EN
8
5596 F06
EN
0
200
400
600
800
1000
1200
1.2
1.0
0.8
0.6
0.4
0.2
0
6
3
0
TIME (μs)
OUTPUT VOLTAGE (V)
ENABLE (V)
1MΩ LOAD
50Ω LOAD
1MΩ
LOAD
LTC5596
20
5596f
For more information www.linear.com/LTC5596
applicaTions inForMaTion
High Accuracy Power Measurement
The power measurement accuracy achieved using a power
detector is not only determined by the performance of the
power detector device itself, but also by the approach/
methods used to interpret the DC power detector output
signal. This can be understood by considering Figure 8.
response using linear regression over a suitable power
range (where the detector response is close to linear).
Better accuracy/smaller errors are obtained if SLOPE and
PINTERCEPT are determined for:
• Each detector device individually
• Each operating temperature
• Each operating frequency
To achieve the best accuracy, it is recommended to de-
termine SLOPE and PINTERCEPT for each individual unit,
requiring a 2-point factory calibration. When temperature
drift effects are to be included, SLOPE and PINTERCEPT need
to be determined at different operating temperatures and
the system needs to incorporate a temperature sensor to
determine which parameter values to use for the current
operating temperature.
The LOG-linearity error curves in the Typical Performance
Characteristics section were obtained using linear regres-
sion, applied to the response of the individual detector
devices at T = 25°C. For frequencies up to 28GHz, the
input power range from –37dBm to –5dBm was used. The
resulting LOG-linearity error tends to have larger negative
values than positive values. To center the error curves
within the ±1dB range, an additional 0.5dB was added
to the PINTERCEPT parameter. This slightly increases the
measurement error at T = 25°C, but results in a smaller
error over the full temperature range. The calculated
LOG-slope and LOG-intercept numbers are displayed in
the tables on page 3 and 4.
A better measurement accuracy is achieved if the inter-
preter uses the actual detector response at T = 25°C as
model for the detector, instead of the perfect linear-in-dB
response described above. The resulting measurement
error, the temperature drift error, equals:
Temperature Drift Error = [VOUT(T) – VOUT(25°C)]/SLOPE
A system that achieves this measurement error should
store the full output voltage vs input power response of
the detector with suitable resolution. The error curves
displayed on page 10 and 11 represent the achieved power
measurement accuracy using this configuration.
5596 F08
PMEAS
VOUT
P
ACT
RF INPUT
SIGNAL
POWER
DETECTOR
INTERPRETER
(ESTIMATOR)
LF DETECTOR
OUTPUT VOLTAGE
MEASURED
INPUT POWER
Systems for accurate power level measurements on RF
signals can conceptually be thought to consist of two
elements:
• A high accuracy power detector (like the LTC5596),
converting the power level of an RF signal into a DC
voltage or current;
• An interpreter (also called an estimator), translating
the DC output voltage or current of the power detector
back to a power level.
In Figure 8, PMEAS represents the power level measured
by the system, i.e. the power level the system thinks is
present at its input, while PACT represents the actual power
level present at the detector input. The power measurement
error thus equals the difference: PERR = PMEAS – PACT.
The more the interpreter knows about the operating
conditions and transfer of the detector, the smaller the
measurement error that can be achieved. For example,
the interpreter may assume that the detector response is
perfectly linear in dB, such that the relationship between
input power and output voltage is a straight line:
VOUT = SLOPE • (PMEAS - PINTERCEPT)
This results in a power measurement error equal to:
LOG-Linearity Error = VOUT/SLOPE +PINTERCEPT – PACT
The parameters SLOPE and PINTERCEPT, the LOG-slope and
LOG-intercept, are best obtained from the actual detector
Figure 8. Power Measurement Concept
LTC5596
21
5596f
For more information www.linear.com/LTC5596
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.
package DescripTion
Please refer to http://www.linear.com/product/LTC5596#packaging for the most recent package drawings.
2.00 ±0.10
(4 SIDES)
NOTE:
1. DRAWING IS NOT A JEDEC PACKAGE OUTLINE
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
0.40 ±0.10
0.50 ±0.10
BOTTOM VIEW—EXPOSED PAD
0.20 ±0.10
0.75 ±0.05
R = 0.115
TYP
1.55 ±0.10
(2 SIDES)
1
4
85
PIN 1 BAR
TOP MARK
(SEE NOTE 6)
0.200 REF
0.00 – 0.05
(DC) DFN 0616 REV A
0.23 ±0.05
0.50 BSC
0.25 ±0.05
1.60 ±0.05
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED
0.25 ±0.05 1.15 ±0.05
0.70 ±0.05
2.55
±0.05
PACKAGE OUTLINE
0.50 BSC
PIN 1 NOTCH
R = 0.15
DC Package
8-Lead Plastic DFN (2mm × 2mm), Flip Chip
(Reference LTC DWG # 05-08-1957 Rev A)
LTC5596
22
5596f
For more information www.linear.com/LTC5596
LINEAR TECHNOLOGY CORPORATION 2016
LT 0916 • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com/LTC5596
relaTeD parTs
Typical applicaTion
VCC
GND
GND
EN
OUT
GND
RFIN FLTR
3.3V
5596 TA02
LTC5596
100nF
1Ω
ENABLE
ADC
CFLTR
RF
IN
PART NUMBER DESCRIPTION COMMENTS
RF Power Detectors
LTC5564 600MHz to 15GHz Ultra-Fast Response Schottky
Peak Detector with Fast Comparator
7ns Detector Response, 9ns Comparator Response, 75MHz Demodulation
Bandwidth Envelope Detection
LT5581 10MHz to 6GHz RMS Power Detector 40dB Dynamic Range ±1dB Linearity and Accuracy Over Temperature, Log
Linear Response, 1.4mA at 3.3V
LTC5587 10MHz to 6GHz RMS Power Detector with Digital
Output
40dB Dynamic Range ±1dB Linearity and Accuracy Over Temperature, On-Chip
12-Bit ADC, 3mA Supply Current
LTC5582 40MHz to 10GHz RMS Power Detector 57dB Dynamic Range at 2GHz, ±0.5dB Accuracy Over Temperature, Excellent
Linearity Error
LTC5583 Dual 40MHz to 6GHz RMS Power Detector with
Difference VSWR Output and Envelope Detector
Output
60dB Dynamic Range at 2GHz, ±0.5dB Accuracy Over Temperature, 40dB Ch-Ch
Isolation
Infrastructure
LTC5548 2GHz to 14GHz Microwave Mixer with Wideband
DC-6GHz IF
IIP3 = 24.4dBm, 8dB Conversion Loss, < 10dB NF, 3.3V, 120mA Supply
Operation
LTC5549 2GHz to 14GHz Microwave Mixer with Integrated
LO Frequency Doubler
28.2dBm IIP3, 8dB Conversion Loss, 0dBm LO Drive, Up- and
Down-Conversion
100MHz to 40GHz Power Measurement
