General Description
The MAX2039 high-linearity passive upconverter or
downconverter mixer is designed to provide 7.3dB NF
and a 7.1dB conversion loss for an RF frequency range
of 1700MHz to 2200MHz to support UMTS/WCDMA,
DCS, and PCS base-station transmitter or receiver
applications. The IIP3 is typically +34.5dBm and
+33.5dBm for downconversion and upconversion oper-
ation, respectively. With an LO frequency range of
1500MHz to 2000MHz, this particular mixer is ideal for
low-side LO injection architectures. (For a pin-to-pin-
compatible mixer meant for high-side LO injection, con-
tact the factory.)
In addition to offering excellent linearity and noise per-
formance, the MAX2039 also yields a high level of com-
ponent integration. This device includes a
double-balanced passive mixer core, a dual-input LO
selectable switch, and an LO buffer. On-chip baluns
are also integrated to allow for a single-ended RF input
for downconversion (or RF output for upconversion),
and single-ended LO inputs. The MAX2039 requires a
nominal LO drive of 0dBm, and supply current is guar-
anteed to be below 135mA.
The MAX2039 is pin compatible with the MAX2031
815MHz to 995MHz mixer, making this family of passive
upconverters and downconverters ideal for applications
where a common PC board layout is used for both fre-
quency bands.
The MAX2039 is available in a compact 20-pin thin
QFN package (5mm x 5mm) with an exposed paddle.
Electrical performance is guaranteed over the extended
-40°C to +85°C temperature range.
Applications
UMTS/WCDMA Base Stations
DCS1800/PCS1900 EDGE Base Stations
cdmaOneTM and cdma2000®Base Stations
PHS/PAS Base Stations
Predistortion Receivers
Fixed Broadband Wireless Access
Wireless Local Loop
Private Mobile Radio
Military Systems
Microwave Links
Digital and Spread-Spectrum Communication
Systems
Features
♦1700MHz to 2200MHz RF Frequency Range
♦1500MHz to 2000MHz LO Frequency Range
♦1900MHz to 2400MHz LO Frequency Range
(Contact Factory)
♦DC to 350MHz IF Frequency Range
♦7.1dB Conversion Loss
♦+34.5dBm Input IP3 (Downconversion)
♦+24.4dBm Input 1dB Compression Point
♦7.3dB Noise Figure
♦Integrated LO Buffer
♦Integrated RF and LO Baluns
♦Low -3dBm to +3dBm LO Drive
♦Built-In SPDT LO Switch with 45dB LO1 to LO2
Isolation and 50ns Switching Time
♦Pin Compatible with the MAX2031 815MHz to
995MHz Mixer
♦External Current-Setting Resistor Provides Option
for Operating Mixer in Reduced-Power/Reduced-
Performance Mode
♦Lead-Free Package Available
MAX2039
High-Linearity, 1700MHz to 2200MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
________________________________________________________________ Maxim Integrated Products 1
Ordering Information
19-3468; Rev 0; 10/04
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
EVALUATION KIT
AVAILABLE
PART
TEMP RANGE
PIN-PACKAGE
PKG
CODE
MAX2039ETP
-40°C to +85°C
20 Thin QFN-EP*
(5mm x 5mm)
bulk
T2055-3
MAX2039ETP-T
-40°C to +85°C
20 Thin QFN-EP*
(5mm x 5mm)
T/R
T2055-3
MAX2039ETP+D
-40°C to +85°C
20 Thin QFN-EP*
(5mm x 5mm)
lead-free
bulk
T2055-3
MAX2039ETP+TD
-40°C to +85°C
20 Thin QFN-EP*
(5mm x 5mm)
lead-free
T/R
T2055-3
*EP = Exposed paddle.
+= Lead free.
D= Dry pack.
cdmaOne is a trademark of CDMA Development Group.
cdma2000 is a registered trademark of Telecommunications
Industry Association. Pin Configuration and Typical Application Circuit appear at
end of data sheet.
MAX2039
High-Linearity, 1700MHz to 2200MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
VCC to GND...........................................................-0.3V to +5.5V
TAP, LOBIAS, LOSEL to GND....................-0.3V to (VCC + 0.3V)
LO1, LO2, IF+, IF- to GND ....................................-0.3V to +0.3V
RF, IF, LO1, LO2 Input Power ........................................+15dBm
RF (RF is DC shorted to GND through a balun) .................50mA
Continuous Power Dissipation
20-Pin QFN-EP (derate 20mW/°C above TA= +70°C) ....2.2W
θJA .................................................................................+33°C/W
θJC ...................................................................................+8°C/W
Operating Temperature Range (Note A) ....TC= -40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +165°C
Lead Temperature (soldering, 10s) .................................+300°C
DC ELECTRICAL CHARACTERISTICS
(MAX2039 Typical Application Circuit, VCC = +4.75V to +5.25V, TC= -40°C to +85°C, no RF signals applied, IF+ and IF- DC ground-
ed through a transformer. Typical values are at VCC = +5V, TC= +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
Supply Voltage VCC
4.75 5.00 5.25
V
Supply Current ICC
104 135
mA
LO_SEL Input Logic Low VIL 0.8 V
LO_SEL Input Logic High VIH 2V
Note A: TCis the temperature on the exposed paddle of the package.
AC ELECTRICAL CHARACTERISTICS (DOWNCONVERTER OPERATION)
(MAX2039 Typical Application Circuit, VCC = +4.75V to +5.25V, TC= -40°C to +85°C, RF and LO ports are driven from 50Ωsources,
PLO = -3dBm to +3dBm, PRF = 0dBm, fRF = 1700MHz to 2200MHz, fLO = 1500MHz to 2000MHz, fIF = 200MHz, fRF > fLO, unless oth-
erwise noted. Typical values are at VCC = +5V, PRF = 0dBm, PLO = 0dBm, fRF = 1900MHz, fLO = 1700MHz, fIF = 200MHz, TC=
+25°C, unless otherwise noted.) (Notes 1, 2)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
RF Frequency Range fRF (Note 3)
1700 2200
MHz
(Note 3)
1500 2000
LO Frequency Range fLO (Contact factory)
1900 2400
MHz
IF Frequency Range fIF External IF transformer dependent DC
350
MHz
Conversion Loss LCPRF < +2dBm 7.1 dB
Loss Variation Over Temperature
TC = -40°C to +85°C
0.0075
Input Compression Point P1dB (Note 4)
24.4
dBm
Input Third-Order Intercept Point
IIP3
Two tones:
fRF1 = 2000MHz,
fRF2 = 2001MHz,
PRF = +5dBm/tone,
fLO = 1800MHz,
PLO = 0dBm
31
34.5
dBm
Input IP3 Variation Over
Temperature TC = -40°C to +85°C
±0.75
dB
Noise Figure NF Single sideband 7.3 dB
MAX2039
High-Linearity, 1700MHz to 2200MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
_______________________________________________________________________________________ 3
MAX2039
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
Noise Figure Under-Blocking
PRF = 5dBm, fRF = 2000MHz, fLO =
1810MHz, fblock = 2100MHz
(Note 5)
19 dB
LO Drive -3 +3 dBm
2 x 2 2RF - 2LO,
PRF = 0dBm 73
Spurious Response at IF
3 x 3 3RF - 3LO,
PRF = 0dBm 72
dBc
LO2 selected, 1500MHz < fLO < 1700MHz 40 52
LO1 to LO2 Isolation
(Note 1) LO1 selected, 1500MHz < fLO < 1700MHz 40 45 dB
Maximum LO Leakage at RF Port
PLO = +3dBm -18 dBm
Maximum LO Leakage at IF Port
PLO = +3dBm
-27.5
dBm
Minimum RF-to-IF Isolation 35 dB
LO Switching Time 50% of LOSEL to IF settled to within 2° 50 ns
RF Port Return Loss 18 dB
LO port selected, LO and IF terminated 16
LO Port Return Loss LO port unselected, LO and IF terminated 26 dB
IF Port Return Loss
LO driven at 0dBm, RF terminated into 50Ω
20 dB
AC ELECTRICAL CHARACTERISTICS (DOWNCONVERTER OPERATION) (continued)
(MAX2039 Typical Application Circuit, VCC = +4.75V to +5.25V, TC= -40°C to +85°C, RF and LO ports are driven from 50Ωsources,
PLO = -3dBm to +3dBm, PRF = 0dBm, fRF = 1700MHz to 2200MHz, fLO = 1500MHz to 2000MHz, fIF = 200MHz, fRF > fLO, unless oth-
erwise noted. Typical values are at VCC = +5V, PRF = 0dBm, PLO = 0dBm, fRF = 1900MHz, fLO = 1700MHz, fIF = 200MHz, TC=
+25°C, unless otherwise noted.) (Notes 1, 2)
MAX2039
High-Linearity, 1700MHz to 2200MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
4 _______________________________________________________________________________________
AC ELECTRICAL CHARACTERISTICS (UPCONVERTER OPERATION)
(MAX2039 Typical Application Circuit, VCC = +4.75V to +5.25V, TC= -40°C to +85°C, PLO = -3dBm to +3dBm, PIF = 0dBm, fRF =
1700MHz to 2200MHz, fLO = 1500MHz to 2000MHz, fIF = 200MHz, fRF = fLO + fIF, unless otherwise noted. Typical values are at VCC
= +5V, PIF = 0dBm, PLO = 0dBm, fRF = 1900MHz, fLO = 1700MHz, fIF = 200MHz, TC= +25°C, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
Input Compression Point P1dB (Note 4)
24.4
dBm
Input Third-Order Intercept Point
IIP3
Two tones:
fIF1 = 200MHz,
fIF2 = 210MHz,
PIF = +5dBm/tone,
fLO = 1940MHz,
PLO = 0dBm
29.5 33.5
dBm
LO - 2IF 67
LO ±2IF Spur LO + 2IF 63 dBc
LO - 3IF 72
LO ±3IF Spur LO + 3IF 76 dBc
Output Noise Floor POUT = 0dBm
-160
dBm/
Hz
Note 1: Guaranteed by design and characterization.
Note 2: All limits include external component losses. Output measurements taken at IF port for downconverter and RF port for
upconverter from the Typical Application Circuit.
Note 3: Operation outside this range is possible, but with degraded performance of some parameters.
Note 4: Compression point characterized. It is advisable not to continuously operate the mixer RF or IF input above +15dBm.
Note 5: Measured with external LO source noise filtered such that the noise floor is -174dBm/Hz. This specification reflects the
effects of all SNR degradations in the mixer, including the LO noise as defined in Maxim Application Note 2021.
MAX2039
High-Linearity, 1700MHz to 2200MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
_______________________________________________________________________________________ 5
CONVERSION LOSS vs. RF FREQUENCY
MAX2039 toc01
RF FREQUENCY (MHz)
CONVERSION LOSS (dB)
22502100195018001650
5
6
7
8
9
4
1500 2400
TC = +85°C
TC = -35°C
TC = +25°C
CONVERSION LOSS vs. RF FREQUENCY
MAX2039 toc02
RF FREQUENCY (MHz)
CONVERSION LOSS (dB)
22502100195018001650
5
6
7
8
9
4
1500 2400
PLO = -3dBm, 0dBm, +3dBm
CONVERSION LOSS vs. RF FREQUENCY
MAX2039 toc03
RF FREQUENCY (MHz)
CONVERSION LOSS (dB)
22502100195018001650
5
6
7
8
9
4
1500 2400
VCC = 4.75V, 5.0V, 5.25V
INPUT IP3 vs. RF FREQUENCY
MAX2039 toc04
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
22502100195018001650
31
33
35
37
39
25
27
29
1500 2400
TC = +85°C
TC = -35°C
TC = +25°C
INPUT IP3 vs. RF FREQUENCY
MAX2039 toc05
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
22502100195018001650
31
33
35
37
39
25
27
29
1500 2400
PLO = -3dBm, 0dBm
PLO = +3dBm
INPUT IP3 vs. RF FREQUENCY
MAX2039 toc06
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
22502100195018001650
31
33
35
37
39
25
27
29
1500 2400
VCC = 5.25V
VCC = 5.0V
VCC = 4.75V
NOISE FIGURE vs. RF FREQUENCY
MAX2039 toc07
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
2200 23002100200019001800
6
7
8
9
10
5
1700 2400
TC = +85°C
TC = -35°C
TC = +25°C
NOISE FIGURE vs. RF FREQUENCY
MAX2039 toc08
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
2200 23002100200019001800
6
7
8
9
10
5
1700 2400
PLO = -3dBm
PLO = 0dBm
PLO = +3dBm
NOISE FIGURE vs. RF FREQUENCY
MAX2039 toc09
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
2200 23002100200019001800
6
7
8
9
10
5
1700 2400
VCC = 5.25V
VCC = 4.75V VCC = 5.0V
Typical Operating Characteristics
(MAX2039 Typical Application Circuit, VCC = +5.0V, PLO = 0dBm, PRF = 0dBm, fRF > fLO , fIF = 200MHz, R1= 549Ω, unless other-
wise noted.)
Downconverter Curves
MAX2039
High-Linearity, 1700MHz to 2200MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
6 _______________________________________________________________________________________
2RF - 2LO RESPONSE vs. RF FREQUENCY
MAX2039 toc10
RF FREQUENCY (MHz)
2RF - 2LO RESPONSE (dBc)
22502100195018001650
60
55
50
65
70
75
80
45
1500 2400
TC = +85°C
TC = -35°C
TC = +25°C
PRF = 0dBm
2RF - 2LO RESPONSE vs. RF FREQUENCY
MAX2039 toc11
RF FREQUENCY (MHz)
2RF - 2LO RESPONSE (dBc)
22502100195018001650
60
55
50
65
70
75
80
45
1500 2400
PLO = +3dBm
PLO = 0dBm
PLO = -3dBm
PRF = 0dBm
2RF - 2LO RESPONSE vs. RF FREQUENCY
MAX2039 toc12
RF FREQUENCY (MHz)
2RF - 2LO RESPONSE (dBc)
22502100195018001650
60
55
50
65
70
75
80
45
1500 2400
PRF = 0dBm
VCC = 4.75V, 5.0V, 5.25V
3RF - 3LO RESPONSE vs. RF FREQUENCY
MAX2039 toc13
RF FREQUENCY (MHz)
3RF - 3LO RESPONSE (dBc)
22502100195018001650
60
55
50
65
70
75
85
80
45
1500 2400
TC = +85°C
TC = -35°C
TC = +25°C
PRF = 0dBm
3RF - 3LO RESPONSE vs. RF FREQUENCY
MAX2039 toc14
RF FREQUENCY (MHz)
3RF - 3LO RESPONSE (dBc)
22502100195018001650
60
55
50
65
70
75
85
80
45
1500 2400
PRF = 0dBm
PLO = -3dBm, 0dBm, +3dBm
3RF - 3LO RESPONSE vs. RF FREQUENCY
MAX2039 toc15
RF FREQUENCY (MHz)
3RF - 3LO RESPONSE (dBc)
22502100195018001650
60
55
50
65
70
75
85
80
45
1500 2400
PRF = 0dBm
VCC = 5.25V
VCC = 5.0V
VCC = 4.75V
INPUT P1dB vs. RF FREQUENCY
MAX2039 toc16
RF FREQUENCY (MHz)
INPUT P1dB (dBm)
22502100195018001650
22
21
20
23
24
25
27
26
17
18
19
1500 2400
TC = +85°C
TC = -35°C
TC = +25°C
INPUT P1dB vs. RF FREQUENCY
MAX2039 toc17
RF FREQUENCY (MHz)
INPUT P1dB (dBm)
22502100195018001650
22
21
20
23
24
25
27
26
17
18
19
1500 2400
PLO = -3dBm, 0dBm, +3dBm
INPUT P1dB vs. RF FREQUENCY
MAX2039 toc18
RF FREQUENCY (MHz)
INPUT P1dB (dBm)
22502100195018001650
22
21
20
23
24
25
27
26
17
18
19
1500 2400
VCC = 5.25V
VCC = 5.0V
VCC = 4.75V
Typical Operating Characteristics (continued)
(MAX2039 Typical Application Circuit, VCC = +5.0V, PLO = 0dBm, PRF = 0dBm, fRF > fLO , fIF = 200MHz, R1= 549Ω, unless other-
wise noted.)
Downconverter Curves
MAX2039
High-Linearity, 1700MHz to 2200MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
_______________________________________________________________________________________ 7
LO SWITCH ISOLATION vs. LO FREQUENCY
MAX2039 toc 19
LO FREQUENCY (MHz)
LO SWITCH ISOLATION (dB)
20501900175016001450
40
45
50
55
35
1300 2200
TC = -35°C
TC = +85°C
TC = +25°C
LO SWITCH ISOLATION vs. LO FREQUENCY
MAX2039 toc 20
LO FREQUENCY (MHz)
LO SWITCH ISOLATION (dB)
20501900175016001450
40
45
50
55
35
1300 2200
PLO = 0dBm, +3dBm
PLO = -3dBm
LO SWITCH ISOLATION vs. LO FREQUENCY
MAX2039 toc 21
LO FREQUENCY (MHz)
LO SWITCH ISOLATION (dB)
20501900175016001450
40
45
50
55
35
1300 2200
VCC = 4.75V, 5.0V, 5.25V
LO LEAKAGE AT IF PORT vs. LO FREQUENCY
MAX2039 toc22
LO FREQUENCY (MHz)
LO LEAKAGE (dBm)
20501900175016001450
-40
-35
-30
-25
-20
-15
-10
-45
1300 2200
TC = +25°C
TC = +85°C
TC = -35°C
LO LEAKAGE AT IF PORT vs. LO FREQUENCY
MAX2039 toc23
LO FREQUENCY (MHz)
LO LEAKAGE (dBm)
20501900175016001450
-40
-35
-30
-25
-20
-15
-10
-45
1300 2200
PLO = +3dBm
PLO = 0dBm
PLO = -3dBm
LO LEAKAGE AT IF PORT vs. LO FREQUENCY
MAX2039 toc24
LO FREQUENCY (MHz)
LO LEAKAGE (dBm)
20501900175016001450
-40
-35
-30
-25
-20
-15
-10
-45
1300 2200
VCC = 5.25V
VCC = 5.0V
VCC = 4.75V
LO LEAKAGE AT RF PORT vs. LO FREQUENCY
MAX2039 toc25
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
20501900175016001450
-30
-25
-20
-15
-10
1300 2200
TC = +25°CTC = +85°C
TC = -35°C
LO LEAKAGE AT RF PORT vs. LO FREQUENCY
MAX2039 toc26
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
20501900175016001450
-30
-25
-20
-15
-10
1300 2200
PLO = -3dBm, 0dBm, +3dBm
LO LEAKAGE AT RF PORT vs. LO FREQUENCY
MAX2039 toc27
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
20501900175016001450
-30
-25
-20
-15
-10
1300 2200
VCC = 5.25V VCC = 5.0V
VCC = 4.75V
Typical Operating Characteristics (continued)
(MAX2039 Typical Application Circuit, VCC = +5.0V, PLO = 0dBm, PRF = 0dBm, fRF > fLO , fIF = 200MHz, R1= 549Ω, unless other-
wise noted.)
Downconverter Curves
MAX2039
High-Linearity, 1700MHz to 2200MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
8 _______________________________________________________________________________________
RF-TO-IF ISOLATION vs. RF FREQUENCY
MAX2039 toc28
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
22502100195018001650
20
25
30
35
40
45
50
1500 2400
TC = +25°C
TC = +85°C
TC = -35°C
RF-TO-IF ISOLATION vs. RF FREQUENCY
MAX2039 toc29
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
22502100195018001650
20
25
30
35
40
45
50
1500 2400
PLO = -3dBm, 0dBm, +3dBm
RF-TO-IF ISOLATION vs. RF FREQUENCY
MAX2039 toc30
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
22502100195018001650
20
25
30
35
40
45
50
1500 2400
VCC = 4.75V, 5.0V, 5.25V
RF PORT RETURN LOSS
vs. RF FREQUENCY
MAX2039 toc31
RF FREQUENCY (MHz)
RF PORT RETURN LOSS (dB)
22502100195018001650
35
30
25
20
15
10
5
0
40
1500 2400
PLO = -3dBm, 0dBm, +3dBm
IF PORT RETURN LOSS
vs. IF FREQUENCY
MAX2039 toc32
IF FREQUENCY (MHz)
IF PORT RETURN LOSS (dB)
350300200 250150100
45
40
35
30
25
20
15
10
5
0
50
50
VCC = 4.75V, 5.0V, 5.25V
LO SELECTED RETURN LOSS
vs. LO FREQUENCY
MAX2039 toc33
LO FREQUENCY (MHz)
LO SELECTED RETURN LOSS (dB)
21001500 19001700
35
30
25
20
15
10
5
0
40
1300 2300
PLO = +3dBm
PLO = 0dBm
PLO = -3dBm
LO UNSELECTED RETURN LOSS
vs. LO FREQUENCY
MAX2039 toc34
LO FREQUENCY (MHz)
LO UNSELECTED RETURN LOSS (dB)
21001500 19001700
50
40
30
20
0
10
60
1300 2300
PLO = -3dBm, 0dBm, +3dBm
SUPPLY CURRENT
vs. TEMPERATURE (TC)
MAX2039 toc 35
TEMPERATURE (°C)
SUPPLY CUIRRENT (mA)
6545255-15
80
90
100
110
120
130
70
-35 85
VCC = 5.25V
VCC = 5.0V
VCC = 4.75V
Typical Operating Characteristics (continued)
(MAX2039 Typical Application Circuit, VCC = +5.0V, PLO = 0dBm, PRF = 0dBm, fRF > fLO , fIF = 200MHz, R1= 549Ω, unless other-
wise noted.)
Downconverter Curves
MAX2039
High-Linearity, 1700MHz to 2200MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
_______________________________________________________________________________________ 9
CONVERSION LOSS vs. RF FREQUENCY
MAX2039 toc36
RF FREQUENCY (MHz)
CONVERSION LOSS (dB)
22502100195018001650
5
6
7
8
9
4
1500 2400
TC = +85°C
TC = -35°C
TC = +25°C
CONVERSION LOSS vs. RF FREQUENCY
MAX2039 toc37
RF FREQUENCY (MHz)
CONVERSION LOSS (dB)
22502100195018001650
5
6
7
8
9
4
1500 2400
PLO = -3dBm, 0dBm, +3dBm
CONVERSION LOSS vs. RF FREQUENCY
MAX2039 toc38
RF FREQUENCY (MHz)
CONVERSION LOSS (dB)
22502100195018001650
5
6
7
8
9
4
1500 2400
VCC = 4.75V, 5.0V, 5.25V
INPUT IP3 vs. RF FREQUENCY
MAX2039 toc39
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
22502100195018001650
31
33
35
37
39
25
27
29
1500 2400
TC = +85°C
TC = -35°C
TC = +25°C
INPUT IP3 vs. RF FREQUENCY
MAX2039 toc40
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
22502100195018001650
31
33
35
37
39
25
27
29
1500 2400
PLO = -3dBm, 0dBm, +3dBm
INPUT IP3 vs. RF FREQUENCY
MAX2039 toc41
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
22502100195018001650
31
33
35
37
39
25
27
29
1500 2400
VCC = 5.25V
VCC = 4.75V
VCC = 5.0V
LO + 2IF REJECTION vs. RF FREQUENCY
MAX2039 toc42
RF FREQUENCY (MHz)
LO + 2IF REJECTION (dBc)
22502100195018001650
60
55
50
65
70
75
85
80
45
1500 2400
TC = +85°C
TC = -35°C
TC = +25°C
PIF = 0dBm
LO + 2IF REJECTION vs. RF FREQUENCY
MAX2039 toc43
RF FREQUENCY (MHz)
LO + 2IF REJECTION (dBc)
22502100195018001650
60
55
50
65
70
75
85
80
45
1500 2400
PIF = 0dBm
PLO = +3dBm
PLO = 0dBm
PLO = -3dBm
LO + 2IF REJECTION vs. RF FREQUENCY
MAX2039 toc44
RF FREQUENCY (MHz)
LO + 2IF REJECTION (dBc)
22502100195018001650
60
55
50
65
70
75
85
80
45
1500 2400
PIF = 0dBm
VCC = 4.75V, 5.0V, 5.25V
Typical Operating Characteristics
(MAX2039 Typical Application Circuit, VCC = +5.0V, PLO = 0dBm, PIF = 0dBm, fRF = fLO+ fIF, fIF = 200MHz, R1= 549Ω, unless oth-
erwise noted.) Upconverter Curves
MAX2039
High-Linearity, 1700MHz to 2200MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
10 ______________________________________________________________________________________
Typical Operating Characteristics (continued)
(MAX2039 Typical Application Circuit, VCC = +5.0V, PLO = 0dBm, PIF = 0dBm, fRF = fLO+ fIF, fIF = 200MHz, R1= 549Ω, unless
otherwise noted.)
LO - 2IF REJECTION vs. RF FREQUENCY
MAX2039 toc45
RF FREQUENCY (MHz)
LO - 2IF REJECTION (dBc)
22502100195018001650
60
55
50
65
70
75
80
45
1500 2400
TC = +85°C
TC = -35°C
TC = +25°C
PIF = 0dBm
LO - 2IF REJECTION vs. RF FREQUENCY
MAX2039 toc46
RF FREQUENCY (MHz)
LO - 2IF REJECTION (dBc)
22502100195018001650
60
55
50
65
70
75
80
45
1500 2400
PIF = 0dBm
PLO = +3dBm
PLO = 0dBm
PLO = -3dBm
LO - 2IF REJECTION vs. RF FREQUENCY
MAX2039 toc47
RF FREQUENCY (MHz)
LO - 2IF REJECTION (dBc)
22502100195018001650
60
55
50
65
70
75
85
80
45
1500 2400
PIF = 0dBm
VCC = 4.75V, 5.0V, 5.25V
LO + 3IF REJECTION vs. RF FREQUENCY
MAX2039 toc48
RF FREQUENCY (MHz)
LO + 3IF REJECTION (dBc)
22502100195018001650
60
55
50
65
70
75
90
85
80
1500 2400
PIF = 0dBm
TC = +25°C
TC = +85°C
TC = -35°C
LO + 3IF REJECTION vs. RF FREQUENCY
MAX2039 toc49
RF FREQUENCY (MHz)
LO + 3IF REJECTION (dBc)
22502100195018001650
60
55
50
65
70
75
90
85
80
1500 2400
PIF = 0dBm
PLO = +3dBm
PLO = 0dBm
PLO = -3dBm
LO + 3IF REJECTION vs. RF FREQUENCY
MAX2039 toc50
RF FREQUENCY (MHz)
LO + 3IF REJECTION (dBc)
22502100195018001650
60
55
50
65
70
75
90
85
80
1500 2400
PIF = 0dBm
VCC = 5.25V
VCC = 5.0V
VCC = 4.75V
LO - 3IF REJECTION vs. RF FREQUENCY
MAX2039 toc51
RF FREQUENCY (MHz)
LO - 3IF REJECTION (dBc)
22502100195018001650
60
55
50
65
70
75
90
85
80
1500 2400
PIF = 0dBm
TC = +25°C
TC = +85°C
TC = -35°C
LO - 3IF REJECTION vs. RF FREQUENCY
MAX2039 toc52
RF FREQUENCY (MHz)
LO - 3IF REJECTION (dBc)
22502100195018001650
60
55
50
65
70
75
90
85
80
1500 2400
PIF = 0dBm
PLO = -3dBm, 0dBm, +3dBm
LO - 3IF REJECTION vs. RF FREQUENCY
MAX2039 toc53
RF FREQUENCY (MHz)
LO - 3IF REJECTION (dBc)
22502100195018001650
60
55
50
65
70
75
90
85
80
1500 2400
PIF = 0dBm
VCC = 5.25V
VCC = 5.0V
VCC = 4.75V
Upconverter Curves
MAX2039
High-Linearity, 1700MHz to 2200MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
______________________________________________________________________________________ 11
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX2039 toc54
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
20501900175016001450
-25
-20
-15
-10
-30
1300 2200
TC = +25°C, +85°C
TC = -35°C
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX2039 toc55
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
20501900175016001450
-25
-20
-15
-10
-30
1300 2200
PLO = -3dBm, 0dBm, +3dBm
LO LEAKAGE AT RF PORT
vs. RF FREQUENCY
MAX2039 toc56
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
20501900175016001450
-25
-20
-15
-10
-30
1300 2200
VCC = 5.25V
VCC = 5.0V
VCC = 4.75V
IF LEAKAGE AT RF vs. LO FREQUENCY
MAX2039 toc57
RF FREQUENCY (MHz)
IF LEAKAGE (dBm)
22502100195018001650
-90
-80
-70
-60
-50
-40
1500 2400
TC = +25°C
TC = +85°C
TC = -35°C
IF LEAKAGE AT RF vs. LO FREQUENCY
MAX2039 toc58
RF FREQUENCY (MHz)
IF LEAKAGE (dBm)
22502100195018001650
-90
-80
-70
-60
-50
-40
1500 2400
PLO = -3dBm, 0dBm, +3dBm
IF LEAKAGE AT RF vs. RF FREQUENCY
MAX2039 toc59
RF FREQUENCY (MHz)
IF LEAKAGE (dBm)
22502100195018001650
-90
-80
-85
-70
-75
-60
-65
-50
-55
-40
-45
1500 2400
VCC = 4.75V, 5.0V, 5.25V
Typical Operating Characteristics (continued)
(MAX2039 Typical Application Circuit, VCC = +5.0V, PLO = 0dBm, PIF = 0dBm, fRF = fLO+ fIF, fIF = 200MHz, R1= 549Ω, unless oth-
erwise noted.)
Upconverter Curves
MAX2039
Detailed Description
The MAX2039 can operate either as a downconverter
or an upconverter mixer that provides 7.1dB of conver-
sion loss with a typical 7.3dB noise figure. IIP3 is
+33.5dBm for upconversion and +34.5dBm for down-
conversion. The integrated baluns and matching cir-
cuitry allow for 50Ωsingle-ended interfaces to the RF
port and two LO ports. The RF port can be used as an
input for downconversion or an output for upconver-
sion. A single-pole, double-throw (SPDT) switch pro-
vides 50ns switching time between the two LO inputs
with 45dB of LO-to-LO isolation. Furthermore, the inte-
grated LO buffer provides a high drive level to the
mixer core, reducing the LO drive required at the
MAX2039’s inputs to a range of -3dBm to +3dBm. The
IF port incorporates a differential output for downcon-
version, which is ideal for providing enhanced IIP2 per-
formance. For upconversion, the IF port is a differential
input.
Specifications are guaranteed over broad frequency
ranges to allow for use in UMTS, cdma2000, and
2G/2.5G/3G DCS1800, and PCS1900 base stations.
The MAX2039 is specified to operate over an RF fre-
quency range of 1700MHz to 2200MHz, an LO frequen-
cy range of 1500MHz to 2000MHz, and an IF frequency
range of DC to 350MHz. Operation beyond these
ranges is possible; see the Typical Operating
Characteristics for additional details.
This device can operate in high-side LO injection appli-
cations with an extended LO range, but performance
degrades as fLO continues to increase. See the Typical
Operating Characteristics for measurements taken with
fLO up to 2200MHz. For a device with better high-side
LO injection performance, contact the factory.
RF Port and Balun
For using the MAX2039 as a downconverter, the RF input
is internally matched to 50Ω, requiring no external match-
ing components. A DC-blocking capacitor is required
since the input is internally DC shorted to ground through
the on-chip balun. The RF return loss is typically 18dB
over the entire 1700MHz to 2200MHz RF frequency
range. For upconverter operation, the RF port is a single-
ended output similarly matched to 50Ω.
LO Inputs, Buffer, and Balun
The MAX2039 can be used for either high-side or low-
side injection applications with a 1500MHz to 2000MHz
LO frequency range. For a device with a 1900MHz to
2400MHz LO frequency range, contact the factory. As
an added feature, the MAX2039 includes an internal LO
SPDT switch that can be used for frequency-hopping
applications. The switch selects one of the two single-
ended LO ports, allowing the external oscillator to settle
on a particular frequency before it is switched in. LO
switching time is typically less than 50ns, which is more
than adequate for virtually all GSM applications.
High-Linearity, 1700MHz to 2200MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
12 ______________________________________________________________________________________
Pin Description
PIN NAME FUNCTION
1, 6, 8, 14
VCC Power-Supply Connection. Bypass each VCC pin to GND with capacitors as shown in the Typical
Application Circuit.
2RF
Single-Ended 50Ω RF Input/Output. This port is internally matched and DC shorted to GND through a
balun.
3 TAP Center Tap of the Internal RF Balun. Bypass to GND with capacitors close to the IC, as shown in the
Typical Application Circuit.
4, 5, 10, 12,
13, 16, 17,
20
GND Ground
7
LOBIAS
Bias Resistor for Internal LO Buffer. Connect a 549Ω 1% resistor from LOBIAS to the power supply.
9 LOSEL Local Oscillator Select. Logic control input for selecting LO1 or LO2.
11 LO1 Local Oscillator Input 1. Drive LOSEL low to select LO1.
15 LO2 Local Oscillator Input 2. Drive LOSEL high to select LO2.
18, 19 IF-, IF+ Differential IF Input/Outputs
EP GND Exposed Ground Paddle. Solder the exposed paddle to the ground plane using multiple vias.
If frequency hopping is not employed, set the switch to
either of the LO inputs. The switch is controlled by a
digital input (LOSEL): logic high selects LO2, logic low
selects LO1. In order to avoid damage to the part, volt-
age MUST be applied to VCC before digital logic is
applied to LOSEL (see the Absolute Maximum Ratings).
LO1 and LO2 inputs are internally matched to 50Ω,
requiring only a 22pF DC-blocking capacitor.
A two-stage internal LO buffer allows a wide-input
power range for the LO drive. All guaranteed specifica-
tions are for an LO signal power from -3dBm to +3dBm.
The on-chip low-loss balun, along with an LO buffer,
drives the double-balanced mixer. All interfacing and
matching components from the LO inputs to the IF out-
puts are integrated on chip.
High-Linearity Mixer
The core of the MAX2039 is a double-balanced, high-
performance passive mixer. Exceptional linearity is pro-
vided by the large LO swing from the on-chip LO
buffer.
Differential IF
The MAX2039 mixer has an IF frequency range of DC to
350MHz. Note that these differential ports are ideal for
providing enhanced IIP2 performance. Single-ended IF
applications require a 1:1 balun to transform the 50Ωdif-
ferential IF impedance to a 50Ωsingle-ended system.
After the balun, the IF return loss is better than 15dB.
The differential IF is used as an input port for upconvert-
er operation. The user can use a differential IF amplifier
following the mixer but a DC block is required on both IF
pins. In this configuration, the IF+ and IF- pins need to
be returned to ground through a high resistance (about
1kΩ). This ground return can also be accomplished by
grounding the RF TAP (pin 3) and AC-coupling the IF+
and IF- ports (pins 19 and 18).
Applications Information
Input and Output Matching
The RF and LO inputs are internally matched to 50Ω. No
matching components are required. Return loss at the RF
port is typically 18dB over the entire input range
(1700MHz to 2200MHz) and return loss at the LO ports is
typically 16dB (1500MHz to 2000MHz). RF and LO inputs
require only DC-blocking capacitors for interfacing.
The IF output impedance is 50Ω(differential). For eval-
uation, an external low-loss 1:1 (impedance ratio) balun
transforms this impedance to a 50Ωsingle-ended out-
put (see the Typical Application Circuit).
Bias Resistor
Bias current for the LO buffer is optimized by fine tun-
ing resistor R1. If reduced current is required at the
expense of performance, contact the factory for details.
If the ±1% bias resistor values are not readily available,
substitute standard ±5% values.
Layout Considerations
A properly designed PC board is an essential part of
any RF/microwave circuit. Keep RF signal lines as short
as possible to reduce losses, radiation, and induc-
tance. For the best performance, route the ground pin
traces directly to the exposed pad under the package.
The PC board exposed pad MUST be connected to the
ground plane of the PC board. It is suggested that mul-
tiple vias be used to connect this pad to the lower-level
ground planes. This method provides a good RF/ther-
mal conduction path for the device. Solder the exposed
pad on the bottom of the device package to the PC
board. The MAX2039 Evaluation Kit can be used as a
reference for board layout. Gerber files are available
upon request at www.maxim-ic.com.
Power-Supply Bypassing
Proper voltage-supply bypassing is essential for high-
frequency circuit stability. Bypass each VCC pin and
TAP with the capacitors shown in the Typical
Application Circuit; see Table 1. Place the TAP bypass
capacitor to ground within 100 mils of the TAP pin.
MAX2039
High-Linearity, 1700MHz to 2200MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
______________________________________________________________________________________ 13
COMPONENT
VALUE
DESCRIPTION
C1 4pF Microwave capacitor (0603)
C4 10pF Microwave capacitor (0603)
C2, C6, C7, C8,
C10, C12 22pF Microwave capacitors (0603)
C3, C5, C9, C11
0.01µF
Microwave capacitors (0603)
R1 549Ω±1% resistor (0603)
T1
1:1 Balun
IF balun with DC grounded
ports
U1
MAX2039
Maxim IC
Table 1. Component List Referring to the
Typical Application Circuit
MAX2039
Exposed Pad RF/Thermal Considerations
The EP of the MAX2039’s 20-pin thin QFN-EP package
provides a low thermal-resistance path to the die. It is
important that the PC board on which the MAX2039 is
mounted be designed to conduct heat from the EP. In
addition, provide the EP with a low-inductance path to
electrical ground. The EP MUST be soldered to a
ground plane on the PC board, either directly or
through an array of plated via holes.
Chip Information
TRANSISTOR COUNT: 1212
PROCESS: SiGe BiCMOS
High-Linearity, 1700MHz to 2200MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
14 ______________________________________________________________________________________
Typical Application Circuit
20
19
GND
IF+
IF-
GND
GND
7
8
9
10
11
12
VCC
VCC
LOBIAS
VCC
VCC
LOSEL
LOSEL
INPUT
GND
13
14
15
16
17
18
LO1
GND
GND
LO2
INPUT
VCC
LO2
6
5
4
3
2
1
GND
GND
TAP
RF
C2C3
VCC
VCC
MAX2039 VCC
C4
C1
C12
LO1
INPUT
C10
C5
C6 C7
R1
C11
T1
4
5
1
3
IF
C8
C9
RF
MAX2039
High-Linearity, 1700MHz to 2200MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
______________________________________________________________________________________ 15
20
19
GND
IF+
IF-
GND
GND
7
8
9
10
11
12
VCC
LOBIAS
VCC
LOSEL
GND
13
14
15
16
17
18
LO1
GND
GND
VCC
LO2
6
5
4
3
2
1
GND
GND
TAP
RF
VCC
TOP VIEW
MAX2039
Pin Configuration
MAX2039
High-Linearity, 1700MHz to 2200MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2004 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
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go to www.maxim-ic.com/packages.)
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