For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim's website at www.maxim-ic.com.
General Description
The MAX2029 high-linearity passive upconverter or
downconverter mixer is designed to provide +36.5dBm
IIP3, 6.7dB NF, and 6.5dB conversion loss for an 815MHz
to 1000MHz RF frequency range to support GSM/cellular
base-station transmitter or receiver applications. With a
570MHz to 900MHz LO frequency range, this particular
mixer is ideal for low-side LO injection architectures. For a
pin-to-pin-compatible mixer meant for high-side LO injec-
tion, refer to the MAX2031 data sheet.
In addition to offering excellent linearity and noise perfor-
mance, the MAX2029 also yields a high level of compo-
nent 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 MAX2029 requires a nominal LO drive of 0dBm, and
supply current is guaranteed to be below 100mA.
The MAX2029 is pin compatible with the MAX2039,
MAX2041, MAX2042, MAX2044 series of 1700MHz to
2200MHz, 2000MHz to 3000MHz, and 3200MHz to
3900MHz mixers, making this family of passive upcon-
verters and downconverters ideal for applications
where a common printed-circuit board (PCB) layout is
used for multiple frequency bands.
The MAX2029 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
Features
♦815MHz to 1000MHz RF Frequency Range
♦570MHz to 900MHz LO Frequency Range
♦960MHz to 1180MHz LO Frequency Range
(Refer to the MAX2031 Data Sheet)
♦DC to 250MHz IF Frequency Range
♦6dB/6.5dB (Upconverter/Downconverter)
Conversion Loss
♦36.5dBm/39dBm (Downconverter/Upconverter)
Input IP3
♦+25dBm/+27dBm (Upconverter/Downconverter)
Input 1dB Compression Point
♦6.7dB Noise Figure
♦Integrated LO Buffer
♦Integrated RF and LO Baluns
♦Low -3dBm to +3dBm LO Drive
♦Built-In SPDT LO Switch with 53dB Isolation and
50ns Switching Time
♦Pin Compatible with the MAX2039/MAX2041
1700MHz to 2200MHz Mixers
♦External Current-Setting Resistor Provides Option
for Operating Mixer in Reduced-Power/Reduced-
Performance Mode
♦Lead-Free Package Available
MAX2029
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
________________________________________________________________ Maxim Integrated Products 1
19-1017; Rev 0; 10/07
cdma2000 is a registered trademark of Telecommunications
Industry Association.
iDEN is a registered trademark of Motorola, Inc.
Cellular Band WCDMA
and cdma2000®Base
Stations
GSM 850/GSM 900 2G
and 2.5G EDGE Base
Stations
TDMA and Integrated
Digital Enhanced
Network (iDEN®) Base
Stations
PHS/PAS Base Stations
WiMAX Base Stations
and Customer Premise
Equipment
Predistortion Receivers
Microwave and Fixed
Broadband Wireless
Access
Wireless Local Loop
Private Mobile Radios
Military Systems
Microwave Links
Digital and Spread-
Spectrum
Communication Systems
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
PKG
CODE
M AX 2029E TP /- T
- 40°C to + 85° C 20 Thi n QFN- E P *
( 5mm x 5m m )
T2055- 3
M AX 2029E TP + /+ T
- 40°C to + 85° C 20 Thi n QFN- E P *
( 5mm x 5m m )
T2055- 3
T = Tape and reel.
*EP = Exposed paddle.
+Denotes lead-free package.
MAX2029
TOP VIEW
4
5
3
2
12
11
13
LOBIAS
LOSEL
GND
14
VCC
IF+
GND
GND
GND
67
TAP
910
20 19 17 16
GND
GND
VCC
GND
GND
LO1
VCC IF-
8
18
RF
115 LO2
VCC
E.P.
Pin Configuration/
Functional Diagram
MAX2029
High-Linearity, 815MHz to 1000MHz 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
RF (RF is DC shorted to GND through a balun)..................50mA
LO1, LO2 to GND ..................................................-0.3V to +0.3V
IF+, IF- to GND ...........................................-0.3V to (VCC + 0.3V)
TAP to GND ...........................................................-0.3V to +1.4V
LOSEL to GND ...........................................-0.3V to (VCC + 0.3V)
LOBIAS to GND..........................................-0.3V to (VCC + 0.3V)
RF, LO1, LO2 Input Power* ............................................+20dBm
Continuous Power Dissipation (TC= +85°C) (Note A)
20-Pin Thin QFN-EP................................................................5W
θJA (Note B)....................................................................+38°C/W
θJC .................................................................................+13°C/W
Operating Temperature Range (Note C) ....TC = -40°C to +85°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note A: Based on junction temperature TJ= TC+ (θJC x VCC x ICC). This formula can be used when the temperature of the
exposed paddle is known while the device is soldered down to a PCB. See the Applications Information section for details.
The junction temperature must not exceed +150°C.
Note B: Junction temperature TJ= TA+ (θJA x VCC x ICC). This formula can be used when the ambient temperature of the EV kit
PCB is known. The junction temperature must not exceed +150°C. See the Applications Information section for details.
Note C: TCis the temperature on the exposed paddle of the package. TAis the ambient temperature of the device and PCB.
AC ELECTRICAL CHARACTERISTICS
(Typical Application Circuit, C5 = 3.3pF, L1 and C4 not used, VCC = +4.75V to +5.25V, RF and LO ports are driven from 50Ωsources,
PLO = -3dBm to +3dBm, PRF = 0dBm, fRF = 815MHz to 1000MHz, fLO = 570MHz to 900MHz, fIF = 90MHz, fLO < fRF, TC= -40°C to
+85°C, unless otherwise noted. Typical values are at VCC = +5V, PLO = 0dBm, fRF = 920MHz, fLO = 830MHz, fIF = 90MHz,
TC= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
RF Frequency Range fRF (Note 2)
815 1000
LO Frequency Range fLO (Note 2)
570 900
IF Frequency Range fIF
External IF transformer dependence (Note 2) DC 250
LO Drive PLO (Note 2) -3 +3
LO2 selected, PLO = +3dBm, TC = +25°C,
fRF = 920MHz to 960MHz, fLO = 830MHz to
870MHz
48 53
LO1-to-LO2 Isolation (Note 3) LO1 selected, PLO = +3dBm, TC = +25°C,
fRF = 920MHz to 960MHz, fLO = 830MHz to
870MHz
50 56
dB
Maximum LO Leakage at RF Port PLO = +3dBm
-17
Maximum LO Leakage at IF Port PLO = +3dBm, fRF = 920MHz to 960MHz,
fLO = 830MHz to 870MHz (Note 3)
-29.5 -23
*Maximum reliable continuous input power applied to the RF, LO, and IF ports of this device is +15dBm from a 50Ωsource.
DC ELECTRICAL CHARACTERISTICS
(Typical Application Circuit, VCC = +4.75V to +5.25V, no RF signals applied, TC= -40°C to +85°C. IF+ and IF- are DC grounded through
an IF balun. 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 85
100
mA
LOSEL Input Logic-Low VIL 0.8 V
LOSEL Input Logic-High VIH 2V
Input Current
IIH, IIL ±0.01
µA
MAX2029
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
_______________________________________________________________________________________ 3
AC ELECTRICAL CHARACTERISTICS (DOWNCONVERTER OPERATION)
(Typical Application Circuit, C5 = 3.3pF, L1 and C4 not used, VCC = +4.75V to +5.25V, RF and LO ports are driven from 50Ωsources,
PLO = -3dBm to +3dBm, PRF = 0dBm, fRF = 815MHz to 1000MHz, fLO = 570MHz to 900MHz, fIF = 90MHz, fLO < fRF, TC= -40°C to
+85°C, unless otherwise noted. Typical values are at VCC = +5V, PLO = 0dBm, fRF = 920MHz, fLO = 830MHz, fIF = 90MHz,
TC= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
Conversion Loss GC
6.5
dB
Flatness over any one of three frequency
bands (fIF = 90MHz):
fRF = 827MHz to 849MHz
fRF = 869MHz to 894MHz
fRF = 880MHz to 915MHz
±0.2
Conversion Loss Flatness (Note 3)
fRF = 920MHz to 960MHz
±0.4
dB
TC = +25°C to -40°C
-0.28
Conversion Loss Variation Over
Temperature TC = +25°C to +85°C
0.35
dB
Input Compression Point P1dB (Note 4) 27
dBm
Input Third-Order Intercept Point IIP3
fRF1 = 920MHz, fRF2 = 921MHz,
PRF = 0dBm/tone, PLO = 0dBm, TC = +25°C
(Note 3)
33
36.5
dBm
TC = +25°C to -40°C
-0.6
Input IP3 Variation Over
Temperature IIP3 TC = +25°C to +85°C
0.4
dB
Output Third-Order Intercept Point OIP3
fRF1 = 920MHz, fRF2 = 921MHz, PRF =
0dBm/tone, PLO = 0dBm, TC = +25°C
(Note 3)
26 30
dBm
2 x 2
2RF - 2LO, PRF = -10dBm, fRF = 920MHz to
960MHz (fLO = 830MHz to 870MHz),
TC = +25°C
62 72
Spurious Response at IF (Note 3)
3 x 3 3RF - 3LO, PRF = -10dBm 96
dBc
Noise Figure NF Single sideband
6.7
dB
PBLOCKER = +8dBm 15
Noise Figure Under Blocking
(Note 5) PBLOCKER = +12dBm 19 dB
AC ELECTRICAL CHARACTERISTICS (continued)
(Typical Application Circuit, C5 = 3.3pF, L1 and C4 not used, VCC = +4.75V to +5.25V, RF and LO ports are driven from 50Ωsources,
PLO = -3dBm to +3dBm, PRF = 0dBm, fRF = 815MHz to 1000MHz, fLO = 570MHz to 900MHz, fIF = 90MHz, fLO < fRF, TC= -40°C to
+85°C, unless otherwise noted. Typical values are at VCC = +5V, PLO = 0dBm, fRF = 920MHz, fLO = 830MHz, fIF = 90MHz,
TC= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
LO Switching Time
50% of LOSEL to IF, settled within 2 degrees
50 ns
Minimum RF-to-IF Isolation fRF = 920MHz to 960MHz, fLO = 830MHz to
870MHz (Note 3) 38 47 dB
RF Port Return Loss 18 dB
LO1/LO2 port selected, LO2/LO1, RF, and IF
terminated into 50Ω19
LO Port Return Loss LO1/LO2 port unselected, LO2/LO1, RF, and
IF terminated into 50Ω31
dB
IF Port Return Loss
LO driven at 0dBm, RF terminated into 50Ω
23 dB
MAX2029
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
4 _______________________________________________________________________________________
Note 1: All limits include external component losses. Output measurements are taken at IF or RF port of the Typical Application Circuit.
Note 2: Operation outside this range is possible, but with degraded performance of some parameters.
Note 3: Guaranteed by design.
Note 4: Compression point characterized. It is advisable not to continuously operate the mixer RF/IF inputs above +15dBm.
Note 5: Measured with external LO source noise filtered, so its noise floor is -174dBm/Hz at 100MHz offset. This specification reflects the
effects of all SNR degradations in the mixer, including the LO noise as defined in Maxim Application Note 2021.
AC ELECTRICAL CHARACTERISTICS (UPCONVERTER OPERATION)
(Typical Application Circuit, L1 = 4.7nH, C4 = 4.7pF, C5 not used, VCC = +4.75V to +5.25V, RF and LO ports are driven from 50Ω
sources, PLO = -3dBm to +3dBm, PIF = 0dBm, fRF = 815MHz to 1000MHz, fLO = 570MHz to 900MHz, fIF = 90MHz, fLO < fRF,
TC= -40°C to +85°C, unless otherwise noted. Typical values are at VCC = +5V, PLO = 0dBm, fRF = 920MHz, fLO = 830MHz,
fIF = 90MHz, TC= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
Conversion Loss GC6dB
Conversion Loss Flatness
Flatness over any one of four frequency
bands (fIF = 90MHz):
fRF = 827MHz to 849MHz
fRF = 869MHz to 894MHz
fRF = 880MHz to 915MHz
fRF = 920MHz to 960MHz
±0.3
dB
TC = +25°C to -40°C
-0.4
Conversion Loss Variation Over
Temperature TC = +25°C to +85°C
0.3
dB
Input Compression Point P1dB (Note 4) 25
dBm
Input Third-Order Intercept Point IIP3
fIF1 = 90MHz, fIF2 = 91MHz (results in
fRF1 = 920MHz, fRF2 = 921MHz), PIF =
0d Bm /tone, P
LO = 0d Bm , TC = + 25°C ( N ote 3)
34 39
dBm
TC = +25°C to -40°C
-0.6
Input IP3 Variation Over
Temperature IIP3 TC = +25°C to +85°C
-0.6
dB
LO ± 2IF Spur 71 dBc
LO ± 3IF Spur 86 dBc
Output Noise Floor POUT = 0dBm (Note 5)
-167
dBm/Hz
MAX2029
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
_______________________________________________________________________________________ 5
Typical Operating Characteristics
(Typical Application Circuit, C5 = 3.3pF, L1 and C4 not used, VCC = +5.0V, PLO = 0dBm, PRF = 0dBm, fLO < fRF, fIF = 90MHz, unless
otherwise noted.)
Downconverter Curves
4
5
7
6
8
9
CONVERSION LOSS vs. RF FREQUENCY
MAX2029 toc01
RF FREQUENCY (MHz)
CONVERSION LOSS (dB)
800 900850 950 1000
TC = +85°C
TC = +25°C
TC = -40°C
4
5
7
6
8
9
CONVERSION LOSS vs. RF FREQUENCY
MAX2029 toc02
RF FREQUENCY (MHz)
CONVERSION LOSS (dB)
800 900850 950 1000
PLO = -3dBm, 0dBm, +3dBm
4
5
7
6
8
9
CONVERSION LOSS vs. RF FREQUENCY
MAX2029 toc03
RF FREQUENCY (MHz)
CONVERSION LOSS (dB)
800 900850 950 1000
VCC = 4.75V, 5.0V, 5.25V
30
34
32
38
36
40
42
800 900850 950 1000
INPUT IP3 vs. RF FREQUENCY
MAX2029 toc04
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
TC = +85°C
TC = +25°C
TC = -40°C
30
34
32
38
36
40
42
800 900850 950 1000
INPUT IP3 vs. RF FREQUENCY
MAX2029 toc05
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
PLO = -3dBm, 0dBm, +3dBm
30
34
32
38
36
40
42
800 900850 950 1000
INPUT IP3 vs. RF FREQUENCY
MAX2029 toc06
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
VCC = 5.0V VCC = 5.25V
VCC = 4.75V
5
6
8
7
9
10
NOISE FIGURE vs. RF FREQUENCY
MAX2029 toc07
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
800 900850 950 1000
TC = +85°C
TC = +25°C
TC = -40°C
5
6
8
7
9
10
NOISE FIGURE vs. RF FREQUENCY
MAX2029 toc08
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
800 900850 950 1000
PLO = -3dBm
PLO = 0dBm, +3dBm
5
6
8
7
9
10
NOISE FIGURE vs. RF FREQUENCY
MAX2029 toc09
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
800 900850 950 1000
VCC = 4.75V, 5.0V, 5.25V
MAX2029
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
6 _______________________________________________________________________________________
Downconverter Curves
Typical Operating Characteristics (continued)
(Typical Application Circuit, C5 = 3.3pF, L1 and C4 not used, VCC = +5.0V, PLO = 0dBm, PRF = 0dBm, fLO < fRF, fIF = 90MHz, unless
otherwise noted.)
45
55
50
65
60
70
75
800 900850 950 1000
2RF - 2LO RESPONSE vs. RF FREQUENCY
MAX2029 toc10
RF FREQUENCY (MHz)
2RF - 2LO RESPONSE (dBc)
TC = -40°C, +25°C, +85°C
PRF = 0dBm
45
55
50
65
60
70
75
800 900850 950 1000
2RF - 2LO RESPONSE vs. RF FREQUENCY
MAX2029 toc11
RF FREQUENCY (MHz)
2RF - 2LO RESPONSE (dBc)
PRF = 0dBm
PLO = -3dBm
PLO = +3dBm
PLO = 0dBm
45
55
50
65
60
70
75
800 900850 950 1000
2RF - 2LO RESPONSE vs. RF FREQUENCY
MAX2029 toc12
RF FREQUENCY (MHz)
2RF - 2LO RESPONSE (dBc)
PRF = 0dBm
VCC = 5.0V
VCC = 4.75V
VCC = 5.25V
100
90
80
70
60
800 900850 950 1000
3RF - 3LO RESPONSE vs. RF FREQUENCY
MAX2029 toc13
RF FREQUENCY (MHz)
3RF - 3LO RESPONSE (dBc)
PRF = 0dBm
TC = +85°C
TC = +25°C
TC = -40°C
100
90
80
70
60
800 900850 950 1000
3RF - 3LO RESPONSE vs. RF FREQUENCY
MAX2029 toc14
RF FREQUENCY (MHz)
3RF - 3LO RESPONSE (dBc)
PRF = 0dBm
PLO = -3dBm, 0dBm, +3dBm
100
90
80
70
60
800 900850 950 1000
3RF - 3LO RESPONSE vs. RF FREQUENCY
MAX2029 toc15
RF FREQUENCY (MHz)
3RF - 3LO RESPONSE (dBc)
PRF = 0dBm
VCC = 5.25V
VCC = 5.0V
VCC = 4.75V
31
29
27
25
23
800 900850 950 1000
INPUT P1dB vs. RF FREQUENCY
MAX2029 toc16
RF FREQUENCY (MHz)
INPUT P1dB (dBm)
TC = +85°C
TC = -40°C
TC = +25°C
31
29
27
25
23
800 900850 950 1000
INPUT P1dB vs. RF FREQUENCY
MAX2029 toc17
RF FREQUENCY (MHz)
INPUT P1dB (dBm)
PLO = -3dBm, 0dBm, +3dBm
31
29
27
25
23
800 900850 950 1000
INPUT P1dB vs. RF FREQUENCY
MAX2029 toc18
RF FREQUENCY (MHz)
INPUT P1dB (dBm)
VCC = 5.0V
VCC = 5.25V
VCC = 4.75V
MAX2029
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
_______________________________________________________________________________________ 7
Downconverter Curves
Typical Operating Characteristics (continued)
(Typical Application Circuit, C5 = 3.3pF, L1 and C4 not used, VCC = +5.0V, PLO = 0dBm, PRF = 0dBm, fLO < fRF, fIF = 90MHz, unless
otherwise noted.)
40
60
50
70
LO SWITCH ISOLATION vs. LO FREQUENCY
MAX2029 toc19
LO FREQUENCY (MHz)
LO SWITCH ISOLATION (dB)
500 600 700 800 900 1000
TC = +85°C
TC = +25°C
TC = -40°C
40
60
50
70
LO SWITCH ISOLATION vs. LO FREQUENCY
MAX2029 toc20
LO FREQUENCY (MHz)
LO SWITCH ISOLATION (dB)
500 600 700 800 900 1000
PLO = -3dBm, 0dBm, +3dBm
40
60
50
70
LO SWITCH ISOLATION vs. LO FREQUENCY
MAX2029 toc21
LO FREQUENCY (MHz)
LO SWITCH ISOLATION (dB)
500 600 700 800 900 1000
VCC = 4.75V, 5.0V, 5.25V
-20
-30
-40
-50
-60
710 810760 860 910
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
MAX2029 toc22
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
TC = +85°C
TC = +25°C
TC = -40°C
-20
-30
-40
-50
-60
710 810760 860 910
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
MAX2029 toc23
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
PLO = -3dBm
PLO = 0dBm, +3dBm
-20
-30
-40
-50
-60
710 810760 860 910
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
MAX2029 toc24
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT (dBm)
VCC = 4.75V, 5.0V, 5.25V
-45
-35
-40
-25
-30
-20
-15
500 700600 800 900 1000
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX2029 toc25
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
TC = +85°C
TC = +25°C
TC = -40°C
-45
-35
-40
-25
-30
-20
-15
500 700600 800 900 1000
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX2029 toc26
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
PLO = -3dBm, 0dBm, +3dBm
-45
-35
-40
-25
-30
-20
-15
500 700600 800 900 1000
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX2029 toc27
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
VCC = 4.75V, 5.0V, 5.25V
MAX2029
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
8 _______________________________________________________________________________________
Downconverter Curves
Typical Operating Characteristics (continued)
(Typical Application Circuit, C5 = 3.3pF, L1 and C4 not used, VCC = +5.0V, PLO = 0dBm, PRF = 0dBm, fLO < fRF, fIF = 90MHz, unless
otherwise noted.)
30
40
35
50
45
55
60
800 900850 950 1000
RF-TO-IF ISOLATION vs. RF FREQUENCY
MAX2029 toc28
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
TC = +85°C
TC = +25°C
TC = -40°C
30
40
35
50
45
55
60
800 900850 950 1000
RF-TO-IF ISOLATION vs. RF FREQUENCY
MAX2029 toc29
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
PLO = -3dBm, 0dBm, +3dBm
30
40
35
50
45
55
60
800 900850 950 1000
RF-TO-IF ISOLATION vs. RF FREQUENCY
MAX2029 toc30
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION (dB)
VCC = 4.75V, 5.0V, 5.25V
30
20
25
10
15
5
0
770 870820 920 970 1020
RF PORT RETURN LOSS
vs. RF FREQUENCY
MAX2029 toc31
RF FREQUENCY (MHz)
RF PORT RETURN LOSS (dB)
PLO = -3dBm, 0dBm, +3dBm
40
35
30
25
20
15
10
5
0
0 100 200 300 400 500
IF PORT RETURN LOSS
vs. IF FREQUENCY
MAX2029 toc32
IF FREQUENCY (MHz)
IF PORT RETURN LOSS (dB)
VCC = 4.75V, 5.0V, 5.25V
INCLUDES IF TRANSFORMER
40
35
30
25
20
15
10
5
0
500 600 700 800 900 1000
LO SELECTED RETURN LOSS
vs. LO FREQUENCY
MAX2029 toc33
LO FREQUENCY (MHz)
LO SELECTED RETURN LOSS (dB)
PLO = -3dBm
PLO = +3dBm
PLO = 0dBm
40
35
30
25
20
15
10
5
0
500 600 700 800 900 1000
LO UNSELECTED RETURN LOSS
vs. LO FREQUENCY
MAX2029 toc34
LO FREQUENCY (MHz)
LO UNSELECTED RETURN LOSS (dB)
PLO = -3dBm, 0dBm, +3dBm
60
70
80
90
100
-40 10-15 35 60 85
SUPPLY CURRENT vs. TEMPERATURE (TC)
MAX2029 toc35
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
VCC = 5.25V
VCC = 4.75V
VCC = 5.0V
MAX2029
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
_______________________________________________________________________________________ 9
Typical Operating Characteristics
(Typical Application Circuit, L1 = 4.7nH, C4 = 4.7pF, C5 not used, VCC = +5.0V, PLO = 0dBm, PIF = 0dBm, fRF = fLO + fIF,
fIF = 90MHz, unless otherwise noted.)
Upconverter Curves
3
5
4
7
6
8
9
820 920870 970 1020
CONVERSION LOSS vs. RF FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc01
RF FREQUENCY (MHz)
CONVERSION LOSS (dB)
TC = +85°C
TC = +25°C
TC = -40°C
3
5
4
7
6
8
9
820 920870 970 1020
CONVERSION LOSS vs. RF FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc02
RF FREQUENCY (MHz)
CONVERSION LOSS (dB)
PLO = -3dBm, 0dBm, +3dBm
3
5
4
7
6
8
9
820 920870 970 1020
CONVERSION LOSS vs. RF FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc03
RF FREQUENCY (MHz)
CONVERSION LOSS (dB)
VCC = 4.75V, 5.0V, 5.25V
25
30
40
35
45
50
INPUT IP3 vs. RF FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc04
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
820 920870 970 1020
TC = +85°C
TC = +25°C
TC = -40°C
25
30
40
35
45
50
INPUT IP3 vs. RF FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc05
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
820 920870 970 1020
PLO = -3dBm, 0dBm, +3dBm
25
30
40
35
45
50
INPUT IP3 vs. RF FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc06
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
820 920870 970 1020
VCC = 5.0V
VCC = 5.25V
VCC = 4.75V
90
80
70
60
50
730 830780 880 930
LO + 2IF REJECTION vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc07
LO FREQUENCY (MHz)
LO + 2IF REJECTION (dBc)
TC = +85°C
TC = +25°C
TC = -40°C
PIF = 0dBm
90
80
70
60
50
730 830780 880 930
LO + 2IF REJECTION vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc08
LO FREQUENCY (MHz)
LO + 2IF REJECTION (dBc)
PIF = 0dBm
PLO = -3dBm
PLO = 0dBm
PLO = +3dBm
90
80
70
60
50
730 830780 880 930
LO + 2IF REJECTION vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc09
LO FREQUENCY (MHz)
LO + 2IF REJECTION (dBc)
PIF = 0dBm
VCC = 5.0V
VCC = 5.25V
VCC = 4.75V
MAX2029
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
10 ______________________________________________________________________________________
Upconverter Curves
Typical Operating Characteristics (continued)
(Typical Application Circuit, L1 = 4.7nH, C4 = 4.7pF, C5 not used, VCC = +5.0V, PLO = 0dBm, PIF = 0dBm, fRF = fLO + fIF,
fIF = 90MHz, unless otherwise noted.)
90
80
70
60
50
730 830780 880 930
LO - 2IF REJECTION vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc10
LO FREQUENCY (MHz)
LO - 2IF REJECTION (dBc)
PIF = 0dBm
TC = +85°C
TC = +25°C
TC = -40°C
90
80
70
60
50
730 830780 880 930
LO - 2IF REJECTION vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc11
LO FREQUENCY (MHz)
LO - 2IF REJECTION (dBc)
PIF = 0dBm
PLO = -3dBm PLO = 0dBm
PLO = +3dBm
90
80
70
60
50
730 830780 880 930
LO - 2IF REJECTION vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc12
LO FREQUENCY (MHz)
LO - 2IF REJECTION (dBc)
PIF = 0dBm
VCC = 5.0V
VCC = 5.25V
VCC = 4.75V
100
90
80
70
60
730 830780 880 930
LO + 3IF REJECTION vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc13
LO FREQUENCY (MHz)
LO + 3IF REJECTION (dBc)
PIF = 0dBm
TC = +85°C
TC = +25°C
TC = -40°C
100
90
80
70
60
730 830780 880 930
LO + 3IF REJECTION vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc14
LO FREQUENCY (MHz)
LO + 3IF REJECTION (dBc)
PIF = 0dBm
PLO = -3dBm, 0dBm, +3dBm
100
90
80
70
60
730 830780 880 930
LO + 3IF REJECTION vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc15
LO FREQUENCY (MHz)
LO + 3IF REJECTION (dBc)
PIF = 0dBm
VCC = 4.75V, 5.0V, 5.25V
100
90
80
70
60
730 830780 880 930
LO - 3IF REJECTION vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc16
LO FREQUENCY (MHz)
LO - 3IF REJECTION (dBc)
PIF = 0dBm
TC = +85°C
TC = +25°C
TC = -40°C
100
90
80
70
60
730 830780 880 930
LO - 3IF REJECTION vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc17
LO FREQUENCY (MHz)
LO - 3IF REJECTION (dBc)
PIF = 0dBm
PLO = -3dBm, 0dBm, +3dBm
100
90
80
70
60
730 830780 880 930
LO - 3IF REJECTION vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc18
LO FREQUENCY (MHz)
LO - 3IF REJECTION (dBc)
PIF = 0dBm
VCC = 5.0V
VCC = 5.25V
VCC = 4.75V
MAX2029
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
______________________________________________________________________________________ 11
Upconverter Curves
Typical Operating Characteristics (continued)
(Typical Application Circuit, L1 = 4.7nH, C4 = 4.7pF, C5 not used, VCC = +5.0V, PLO = 0dBm, PIF = 0dBm, fRF = fLO + fIF,
fIF = 90MHz, unless otherwise noted.)
-10
-20
-30
-40
-50
730 830780 880 930
LO LEAKAGE AT RF PORT vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc19
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
TC = +85°C
TC = +25°C
TC = -40°C
-10
-20
-30
-40
-50
730 830780 880 930
LO LEAKAGE AT RF PORT vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc20
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
PLO = -3dBm, 0dBm, +3dBm
-10
-20
-30
-40
-50
730 830780 880 930
LO LEAKAGE AT RF PORT vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc21
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT (dBm)
VCC = 4.75V, 5.0V, 5.25V
-100
-90
-70
-80
-60
-50
IF LEAKAGE AT RF vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc22
LO FREQUENCY (MHz)
IF LEAKAGE AT RF (dBm)
730 830780 880 930
TC = +85°C
TC = +25°C
TC = -40°C
-100
-90
-70
-80
-60
-50
IF LEAKAGE AT RF vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc23
LO FREQUENCY (MHz)
IF LEAKAGE AT RF (dBm)
730 830780 880 930
PLO = -3dBm
PLO = 0dBm, +3dBm
-100
-90
-70
-80
-60
-50
IF LEAKAGE AT RF vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc24
LO FREQUENCY (MHz)
IF LEAKAGE AT RF (dBm)
730 830780 880 930
VCC = 5.25V
VCC = 4.75V, 5.0V
40
35
30
25
20
15
10
5
0
820 870 920 970 1020
RF PORT RETURN LOSS vs. RF FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc25
RF FREQUENCY (MHz)
RF PORT RETURN LOSS (dB)
L1 AND C4 BPF INSTALLED
L1 AND C4 BPF REMOVED
THE L-C BPF ENHANCES PERFORMANCE
IN THE UPCONVERTER MODE BUT LIMITS
RF BANDWIDTH
MAX2029
Detailed Description
The MAX2029 can operate either as a downconverter
or an upconverter mixer. As a downconverter, the
MAX2029 yields a 6.5dB conversion loss, a 6.7dB noise
figure, and a +36.5dBm third-order input intercept point
(IIP3). The integrated baluns and matching circuitry
allow for 50Ωsingle-ended interfaces to the RF port and
the two LO ports. The RF port can be used as an input
for downconversion or an output for upconversion. A sin-
gle-pole, double-throw (SPDT) switch provides 50ns
switching time between the two LO inputs with 53dB of
LO-to-LO isolation. Furthermore, the integrated LO buffer
provides a high drive level to the mixer core, reducing
the LO drive required at the MAX2029’s inputs to a
-3dBm to +3dBm range. The IF port incorporates a dif-
ferential output for downconversion, which is ideal for
providing enhanced IIP2 performance. For upconver-
sion, the IF port is a differential input.
Specifications are guaranteed over broad frequency
ranges to allow for use in cellular band WCDMA,
cdmaOne™, cdma2000, and GSM 850/GSM 900 2.5G
EDGE base stations. The MAX2029 is specified to oper-
ate over an 815MHz to 1000MHz RF frequency range, a
570MHz to 900MHz LO frequency range, and a DC to
250MHz IF frequency range. Operation beyond these
ranges is possible; see the Typical Operating
Characteristics for additional details.
The MAX2029 is optimized for low-side LO injection archi-
tectures. However, the device can operate in high-side
LO injection applications with an extended LO range, but
performance degrades as fLO increases. See the Typical
Operating Characteristics for measurements taken with
fLO up to 1000MHz. For a pin-compatible device that has
been optimized for high-side LO injection, refer to the
MAX2031 data sheet.
RF Port and Balun
For using the MAX2029 as a downconverter, the RF
input is internally matched to 50Ω, requiring no external
matching components. A DC-blocking capacitor is
required because the input is internally DC shorted to
ground through the on-chip balun. The RF return loss is
typically better than 15dB over the entire 815MHz to
1000MHz RF frequency range. For upconverter opera-
tion, the RF port is a single-ended output similarly
matched to 50Ω.
LO Inputs, Buffer, and Balun
The MAX2029 is optimized for low-side LO injection
architectures with a 570MHz to 900MHz LO frequency
range. For a device with a 960MHz to 1180MHz LO fre-
quency range, refer to the MAX2031 data sheet. As an
added feature, the MAX2029 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 nearly all GSM applications. If fre-
quency 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. To avoid damage to the part, voltage
MUST be applied to VCC before digital logic is applied
to LOSEL (see the Absolute Maximum Ratings). LO1
High-Linearity, 815MHz to 1000MHz 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
S i ng l e- E nd ed 50Ω RF Inp ut/O utp ut. Thi s p or t i s i nter nal l y m atched and D C shor ted to G N D thr oug h a b al un.
3 TAP Center Tap of the Internal RF Balun. Connect to ground.
4, 5, 10, 12,
13, 16, 17, 20
GND
Ground. Connect to PCB ground plane for proper operation and improved pin-to-pin isolation.
7
LOBIAS
Bias Resistor for Internal LO Buffer. Connect a 523Ω ±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.
cdmaOne is a trademark of CDMA Development Group.
and LO2 inputs are internally matched to 50Ω, requiring
an 82pF DC-blocking capacitor at each input.
A two-stage internal LO buffer allows a wide input-
power range for the LO drive. All guaranteed specifica-
tions are for a -3dBm to +3dBm LO signal power. The
on-chip low-loss balun, along with an LO buffer, drives
the double-balanced mixer. All interfacing and match-
ing components from the LO inputs to the IF outputs
are integrated on-chip.
High-Linearity Mixer
The core of the MAX2029 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 MAX2029 mixer has a DC to 250MHz IF frequency
range. Note that these differential ports are ideal for pro-
viding enhanced IIP2 performance. Single-ended IF
applications require a 1:1 balun to transform the 50Ωdif-
ferential IF impedance to 50Ωsingle-ended. Including
the balun, the IF return loss is better than 15dB. The dif-
ferential IF is used as an input port for upconverter oper-
ation. The user can use a differential IF amplifier following
the mixer, but a DC block is required on both IF pins.
Applications Information
Input and Output Matching
The RF and LO inputs are internally matched to 50Ω. No
matching components are required. As a downconvert-
er, the return loss at the RF port is typically better than
15dB over the entire input range (815MHz to 1000MHz),
and return loss at the LO ports are typically 15dB
(570MHz to 850MHz). RF and LO inputs require only
DC-blocking capacitors for interfacing.
An optional L-C bandpass filter (BPF) can be installed at
the RF port to improve upconverter performance. See
the Typical Application Circuit and Typical Operating
Characteristics for upconverter operation with an L-C
BPF tuned for 920MHz RF frequency. Performance can
be optimized at other frequencies by choosing different
values for L1 and C4. Removing L1 and C4 altogether
results in a broader match, but performance degrades.
Contact factory for details.
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 PCB is an essential part of any
RF/microwave circuit. Keep RF signal lines as short as
possible to reduce losses, radiation, and inductance.
For the best performance, route the ground-pin traces
directly to the exposed pad under the package. The
PCB exposed pad MUST be connected to the ground
plane of the PCB. It is suggested that multiple vias be
used to connect this pad to the lower-level ground
planes. This method provides a good RF/thermal con-
duction path for the device. Solder the exposed pad on
the bottom of the device package to the PCB. The
MAX2029 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 with
the capacitors shown in the Typical Application Circuit.
See Table 1.
Exposed Pad RF/Thermal Considerations
The exposed paddle (EP) of the MAX2029’s 20-pin thin
QFN-EP package provides a low-thermal-resistance
path to the die. It is important that the PCB on which the
MAX2029 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 PCB, either directly
or through an array of plated via holes.
MAX2029
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
______________________________________________________________________________________ 13
COMPONENT
VALUE
DESCRIPTION
C 1, C 2, C 7, C 8,
C 10, C 11, C12
82pF Microwave capacitors (0603)
C3, C6, C9
10nF Microwave capacitors (0603)
C4* 4.7pF Microwave capacitor (0603)
C5** 3.3pF Microwave capacitor (0603)
L1* 4.7nH Inductor (0603)
R1 523Ω±1% resistor (0603)
T1 1:1
IF balun M/A-COM: MABAES0029
U1
MAX2029
Maxim IC
Table 1. Typical Application Circuit
Component List
*C4 and L1 installed only when mixer is used as an upconverter.
**C5 installed only when mixer is used as a downconverter.
MAX2029
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
14 ______________________________________________________________________________________
MAX2029
4
5
3
2
12
11
13
LOBIAS
LOSEL
GND
14
VCC
IF+
GND
GND
GND
67
TAP
910
20 19 17 16
GND
GND
NOTE: L1 AND C4 USED ONLY FOR UPCONVERTER OPERATION.
C5 USED ONLY FOR DOWNCONVERTER OPERATION.
VCC
GND
GND
LO1
VCC IF-
8
18
RF
115 LO2
VCC
VCC
C3 C2
L1
C4
RF
C1 LO2
C12
LO1
C10
VCC
C11
LOSEL
VCC
C8
C9
VCC
C7
C6
T1
1
3
4
5
IF
C5
R1
E.P.
Typical Application Circuit
Chip Information
PROCESS: SiGe BiCMOS
MAX2029
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
______________________________________________________________________________________ 15
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to www.maxim-ic.com/packages.)
QFN THIN.EPS
MAX2029
High-Linearity, 815MHz to 1000MHz 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
© 2007 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to www.maxim-ic.com/packages.)