MAXIM MAX2029ETP-T

19-1017; Rev 0; 10/07
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
Features
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 injection, refer to the MAX2031 data sheet.
♦ 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/ReducedPerformance Mode
♦ Lead-Free Package Available
PKG
CODE
-40°C to +85°C
20 Thin QFN-EP*
T2055-3
(5mm x 5mm)
MAX2029ETP+/+T -40°C to +85°C
20 Thin QFN-EP*
T2055-3
(5mm x 5mm)
MAX2029ETP/-T
T = Tape and reel.
*EP = Exposed paddle.
+Denotes lead-free package.
TOP VIEW
VCC
1
RF
2
GND
Pin Configuration/
Functional Diagram
GND
Predistortion Receivers
Microwave and Fixed
Broadband Wireless
Access
Wireless Local Loop
Private Mobile Radios
Military Systems
Microwave Links
Digital and SpreadSpectrum
Communication Systems
TEMP RANGE PIN-PACKAGE
IF-
Applications
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
PART
IF+
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.
Ordering Information
GND
In addition to offering excellent linearity and noise performance, the MAX2029 also yields a high level of component 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 upconverters and downconverters ideal for applications
where a common printed-circuit board (PCB) layout is
used for multiple frequency bands.
20
19
18
17
16
MAX2029
15
LO2
14
VCC
TAP
3
13
GND
GND
4
12
GND
GND
5
11
LO1
8
9
10
VCC
GND
7
LOSEL
6
VCC
cdma2000 is a registered trademark of Telecommunications
Industry Association.
iDEN is a registered trademark of Motorola, Inc.
LOBIAS
E.P.
________________________________________________________________ Maxim Integrated Products
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.
1
MAX2029
General Description
MAX2029
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
ABSOLUTE MAXIMUM RATINGS
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: TC is the temperature on the exposed paddle of the package. TA is the ambient temperature of the device and PCB.
*Maximum reliable continuous input power applied to the RF, LO, and IF ports of this device is +15dBm from a 50Ω source.
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.
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
Supply Voltage
VCC
Supply Current
ICC
LOSEL Input Logic-Low
VIL
LOSEL Input Logic-High
VIH
Input Current
CONDITIONS
MIN
TYP
MAX
UNITS
4.75
5.00
5.25
V
85
100
mA
0.8
V
2
IIH, IIL
V
±0.01
µA
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 50Ω sources,
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)
MAX
UNITS
RF Frequency Range
PARAMETER
fRF
(Note 2)
815
1000
MHz
LO Frequency Range
fLO
(Note 2)
570
900
MHz
fIF
External IF transformer dependence (Note 2)
DC
250
MHz
(Note 2)
-3
+3
dBm
LO2 selected, PLO = +3dBm, TC = +25°C,
fRF = 920MHz to 960MHz, fLO = 830MHz to
870MHz
48
IF Frequency Range
LO Drive
LO1-to-LO2 Isolation (Note 3)
SYMBOL
PLO
CONDITIONS
LO1 selected, PLO = +3dBm, TC = +25°C,
fRF = 920MHz to 960MHz, fLO = 830MHz to
870MHz
Maximum LO Leakage at RF Port
PLO = +3dBm
Maximum LO Leakage at IF Port
PLO = +3dBm, fRF = 920MHz to 960MHz,
fLO = 830MHz to 870MHz (Note 3)
2
MIN
TYP
53
dB
50
56
-17
-29.5
_______________________________________________________________________________________
dBm
-23
dBm
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
(Typical Application Circuit, C5 = 3.3pF, L1 and C4 not used, VCC = +4.75V to +5.25V, RF and LO ports are driven from 50Ω sources,
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
LO Switching Time
50% of LOSEL to IF, settled within 2 degrees
Minimum RF-to-IF Isolation
fRF = 920MHz to 960MHz, fLO = 830MHz to
870MHz (Note 3)
MIN
38
RF Port Return Loss
LO Port Return Loss
IF Port Return Loss
TYP
MAX
UNITS
50
ns
47
dB
18
dB
LO1/LO2 port selected, LO2/LO1, RF, and IF
terminated into 50Ω
19
LO1/LO2 port unselected, LO2/LO1, RF, and
IF terminated into 50Ω
31
LO driven at 0dBm, RF terminated into 50Ω
23
dB
dB
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 50Ω sources,
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
Conversion Loss
SYMBOL
CONDITIONS
MIN
GC
Input Compression Point
-0.28
TC = +25°C to +85°C
0.35
(Note 4)
Input Third-Order Intercept Point
IIP3
fRF1 = 920MHz, fRF2 = 921MHz,
PRF = 0dBm/tone, PLO = 0dBm, TC = +25°C
(Note 3)
Input IP3 Variation Over
Temperature
IIP3
Output Third-Order Intercept Point
OIP3
Spurious Response at IF (Note 3)
2x2
3x3
Noise Figure
NF
Noise Figure Under Blocking
(Note 5)
33
dB
27
dBm
36.5
dBm
TC = +25°C to -40°C
-0.6
TC = +25°C to +85°C
0.4
fRF1 = 920MHz, fRF2 = 921MHz, PRF =
0dBm/tone, PLO = 0dBm, TC = +25°C
(Note 3)
2RF - 2LO, PRF = -10dBm, fRF = 920MHz to
960MHz (fLO = 830MHz to 870MHz),
TC = +25°C
dB
±0.4
TC = +25°C to -40°C
P1dB
UNITS
dB
±0.2
fRF = 920MHz to 960MHz
Conversion Loss Variation Over
Temperature
MAX
6.5
Flatness over any one of three frequency
bands (fIF = 90MHz):
fRF = 827MHz to 849MHz
fRF = 869MHz to 894MHz
fRF = 880MHz to 915MHz
Conversion Loss Flatness (Note 3)
TYP
26
30
62
72
3RF - 3LO, PRF = -10dBm
96
Single sideband
6.7
PBLOCKER = +8dBm
15
PBLOCKER = +12dBm
19
dB
dBm
dBc
dB
dB
_______________________________________________________________________________________
3
MAX2029
AC ELECTRICAL CHARACTERISTICS (continued)
MAX2029
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
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
Conversion Loss
SYMBOL
CONDITIONS
MIN
GC
Conversion Loss Flatness
Conversion Loss Variation Over
Temperature
TYP
MAX
UNITS
6
dB
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
TC = +25°C to +85°C
0.3
25
dBm
39
dBm
Input Compression Point
P1dB
(Note 4)
Input Third-Order Intercept Point
IIP3
fIF1 = 90MHz, fIF2 = 91MHz (results in
fRF1 = 920MHz, fRF2 = 921MHz), PIF =
0dBm/tone, PLO = 0dBm, TC = +25°C (Note 3)
Input IP3 Variation Over
Temperature
IIP3
34
TC = +25°C to -40°C
-0.6
TC = +25°C to +85°C
-0.6
dB
dB
LO ± 2IF Spur
71
LO ± 3IF Spur
86
dBc
-167
dBm/Hz
Output Noise Floor
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
4
POUT = 0dBm (Note 5)
dBc
All limits include external component losses. Output measurements are taken at IF or RF port of the Typical Application Circuit.
Operation outside this range is possible, but with degraded performance of some parameters.
Guaranteed by design.
Compression point characterized. It is advisable not to continuously operate the mixer RF/IF inputs above +15dBm.
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.
_______________________________________________________________________________________
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
Downconverter Curves
TC = -40°C
TC = +25°C
5
7
6
PLO = -3dBm, 0dBm, +3dBm
900
950
1000
800
RF FREQUENCY (MHz)
950
38
36
TC = -40°C
34
PLO = -3dBm, 0dBm, +3dBm
34
950
1000
850
900
950
800
1000
8
7
950
1000
NOISE FIGURE vs. RF FREQUENCY
PLO = -3dBm
8
7
6
6
900
10
MAX2029 toc08
9
NOISE FIGURE (dB)
TC = +85°C
850
RF FREQUENCY (MHz)
NOISE FIGURE vs. RF FREQUENCY
10
MAX2029 toc07
TC = +25°C
VCC = 4.75V
34
RF FREQUENCY (MHz)
NOISE FIGURE vs. RF FREQUENCY
9
36
30
800
RF FREQUENCY (MHz)
10
38
32
9
NOISE FIGURE (dB)
900
1000
VCC = 5.25V
VCC = 5.0V
40
30
850
950
42
32
30
900
INPUT IP3 vs. RF FREQUENCY
38
36
850
RF FREQUENCY (MHz)
MAX2029 toc05
40
32
800
MAX2029 toc03
800
1000
INPUT IP3 vs. RF FREQUENCY
INPUT IP3 (dBm)
INPUT IP3 (dBm)
TC = +85°C
900
42
MAX2029 toc04
TC = +25°C
40
VCC = 4.75V, 5.0V, 5.25V
RF FREQUENCY (MHz)
INPUT IP3 vs. RF FREQUENCY
42
850
INPUT IP3 (dBm)
850
6
4
4
800
7
5
5
4
NOISE FIGURE (dB)
8
PLO = 0dBm, +3dBm
MAX2029 toc09
6
8
MAX2029 toc06
7
9
MAX2029 toc02
MAX2029 toc01
TC = +85°C
CONVERSION LOSS (dB)
CONVERSION LOSS (dB)
8
CONVERSION LOSS vs. RF FREQUENCY
CONVERSION LOSS vs. RF FREQUENCY
9
CONVERSION LOSS (dB)
CONVERSION LOSS vs. RF FREQUENCY
9
VCC = 4.75V, 5.0V, 5.25V
8
7
6
TC = -40°C
5
5
800
850
900
950
RF FREQUENCY (MHz)
1000
5
800
850
900
950
RF FREQUENCY (MHz)
1000
800
850
900
950
1000
RF FREQUENCY (MHz)
_______________________________________________________________________________________
5
MAX2029
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.)
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.)
Downconverter Curves
55
50
65
60
PLO = +3dBm
PLO = 0dBm
55
950
1000
RF FREQUENCY (MHz)
3RF - 3LO RESPONSE vs. RF FREQUENCY
TC = +85°C
80
TC = -40°C
MAX2029 toc12
VCC = 5.25V
55
900
950
800
1000
850
900
950
1000
RF FREQUENCY (MHz)
3RF - 3LO RESPONSE vs. RF FREQUENCY
3RF - 3LO RESPONSE vs. RF FREQUENCY
3RF - 3LO RESPONSE (dBc)
TC = +25°C
70
850
100
MAX2029 toc13
PRF = 0dBm
90
60
RF FREQUENCY (MHz)
100
VCC = 4.75V
65
45
800
PRF = 0dBm
100
PRF = 0dBm
3RF - 3LO RESPONSE (dBc)
900
MAX2029 toc14
850
VCC = 5.0V
50
45
800
3RF - 3LO RESPONSE (dBc)
70
50
45
PRF = 0dBm
90
PLO = -3dBm, 0dBm, +3dBm
80
70
90
VCC = 5.25V
MAX2029 toc15
60
PLO = -3dBm
2RF - 2LO RESPONSE (dBc)
65
PRF = 0dBm
70
2RF - 2LO RESPONSE (dBc)
TC = -40°C, +25°C, +85°C
75
MAX2029 toc11
PRF = 0dBm
70
2RF - 2LO RESPONSE (dBc)
75
MAX2029 toc10
75
2RF - 2LO RESPONSE vs. RF FREQUENCY
2RF - 2LO RESPONSE vs. RF FREQUENCY
2RF - 2LO RESPONSE vs. RF FREQUENCY
VCC = 5.0V
80
70
VCC = 4.75V
60
60
850
900
950
1000
800
RF FREQUENCY (MHz)
850
900
950
RF FREQUENCY (MHz)
1000
950
31
VCC = 5.0V
29
27
1000
VCC = 5.25V
27
VCC = 4.75V
25
23
23
800
900
INPUT P1dB vs. RF FREQUENCY
25
TC = +85°C
850
RF FREQUENCY (MHz)
INPUT P1dB (dBm)
INPUT P1dB (dBm)
TC = -40°C
23
6
PLO = -3dBm, 0dBm, +3dBm
29
25
800
1000
INPUT P1dB vs. RF FREQUENCY
29
27
950
31
MAX2029 toc16
TC = +25°C
900
RF FREQUENCY (MHz)
INPUT P1dB vs. RF FREQUENCY
31
850
MAX2029 toc17
800
MAX2029 toc18
60
INPUT P1dB (dBm)
MAX2029
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
800
850
900
950
RF FREQUENCY (MHz)
1000
800
850
900
950
RF FREQUENCY (MHz)
_______________________________________________________________________________________
1000
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
Downconverter Curves
TC = +85°C
50
TC = +25°C
40
PLO = -3dBm, 0dBm, +3dBm
600
700
800
900
1000
MAX2029 toc21
MAX2029 toc20
50
60
50
VCC = 4.75V, 5.0V, 5.25V
40
40
500
600
700
800
900
500
1000
600
700
800
900
LO FREQUENCY (MHz)
LO FREQUENCY (MHz)
LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
-30
TC = +85°C
-40
-50
PLO = 0dBm, +3dBm
-30
PLO = -3dBm
-40
-50
-20
LO LEAKAGE AT IF PORT (dBm)
TC = -40°C
-20
MAX2029 toc23
MAX2029 toc22
-20
LO LEAKAGE AT IF PORT (dBm)
500
LO LEAKAGE AT IF PORT (dBm)
60
70
1000
MAX2029 toc24
TC = -40°C
LO SWITCH ISOLATION (dB)
MAX2029 toc19
LO SWITCH ISOLATION (dB)
60
LO SWITCH ISOLATION vs. LO FREQUENCY
LO SWITCH ISOLATION vs. LO FREQUENCY
70
LO SWITCH ISOLATION (dB)
LO SWITCH ISOLATION vs. LO FREQUENCY
70
VCC = 4.75V, 5.0V, 5.25V
-30
-40
-50
TC = +25°C
-60
760
810
860
910
710
760
810
860
760
810
860
LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
-25
-30
TC = +85°C
-35
-40
-25
-30
-35
PLO = -3dBm, 0dBm, +3dBm
-40
-45
700
800
LO FREQUENCY (MHz)
900
1000
-20
-25
-30
-35
VCC = 4.75V, 5.0V, 5.25V
-40
-45
-45
600
MAX2029 toc27
-20
910
-15
LO LEAKAGE AT RF PORT (dBm)
-20
-15
MAX2029 toc26
TC = +25°C
LO LEAKAGE AT RF PORT (dBm)
MAX2029 toc25
LO FREQUENCY (MHz)
TC = -40°C
500
710
910
LO FREQUENCY (MHz)
-15
LO LEAKAGE AT RF PORT (dBm)
-60
-60
710
500
600
700
800
LO FREQUENCY (MHz)
900
1000
500
600
700
800
900
1000
LO FREQUENCY (MHz)
_______________________________________________________________________________________
7
MAX2029
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.)
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.)
Downconverter Curves
45
TC = -40°C
55
TC = +25°C
40
35
55
RF-TO-IF ISOLATION (dB)
50
60
MAX2029 toc29
TC = +85°C
RF-TO-IF ISOLATION (dB)
50
45
PLO = -3dBm, 0dBm, +3dBm
40
30
850
900
950
1000
45
VCC = 4.75V, 5.0V, 5.25V
40
30
30
800
850
900
950
800
1000
850
900
950
RF FREQUENCY (MHz)
RF FREQUENCY (MHz)
RF FREQUENCY (MHz)
RF PORT RETURN LOSS
vs. RF FREQUENCY
IF PORT RETURN LOSS
vs. IF FREQUENCY
LO SELECTED RETURN LOSS
vs. LO FREQUENCY
5
IF PORT RETURN LOSS (dB)
5
10
15
20
PLO = -3dBm, 0dBm, +3dBm
25
0
10
VCC = 4.75V, 5.0V, 5.25V
15
20
25
30
1000
MAX2029 toc33
0
MAX2029 toc31
0
LO SELECTED RETURN LOSS (dB)
800
50
35
35
MAX2029 toc32
RF-TO-IF ISOLATION (dB)
55
RF-TO-IF ISOLATION vs. RF FREQUENCY
RF-TO-IF ISOLATION vs. RF FREQUENCY
60
MAX2029 toc28
60
MAX2029 toc30
RF-TO-IF ISOLATION vs. RF FREQUENCY
RF PORT RETURN LOSS (dB)
5
10
PLO = +3dBm
PLO = 0dBm
15
20
25
30
PLO = -3dBm
35
35
INCLUDES IF TRANSFORMER
30
40
40
820
870
920
970
1020
0
100
RF FREQUENCY (MHz)
200
300
400
5
700
800
LO FREQUENCY (MHz)
SUPPLY CURRENT vs. TEMPERATURE (TC)
100
MAX2029 toc34
0
VCC = 5.25V
SUPPLY CURRENT (mA)
10
15
PLO = -3dBm, 0dBm, +3dBm
25
30
90
80
VCC = 5.0V
VCC = 4.75V
70
35
40
60
500
600
700
800
LO FREQUENCY (MHz)
8
600
IF FREQUENCY (MHz)
LO UNSELECTED RETURN LOSS
vs. LO FREQUENCY
20
500
500
MAX2029 toc35
770
LO UNSELECTED RETURN LOSS (dB)
MAX2029
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
900
1000
-40
-15
10
35
60
TEMPERATURE (°C)
_______________________________________________________________________________________
85
900
1000
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
Upconverter Curves
8
6
5
TC = -40°C
4
7
6
5
8
CONVERSION LOSS (dB)
TC = +85°C
7
9
MAX2029 toc02
TC = +25°C
CONVERSION LOSS (dB)
PLO = -3dBm, 0dBm, +3dBm
3
870
920
970
1020
6
5
VCC = 4.75V, 5.0V, 5.25V
3
3
820
7
4
4
820
870
920
970
820
1020
970
1020
INPUT IP3 vs. RF FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
INPUT IP3 vs. RF FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
50
50
50
45
VCC = 5.25V
45
35
40
35
VCC = 4.75V
25
25
870
920
35
30
30
25
820
VCC = 5.0V
40
PLO = -3dBm, 0dBm, +3dBm
TC = +85°C
30
INPUT IP3 (dBm)
INPUT IP3 (dBm)
TC = +25°C
40
970
1020
MAX2029 toc06
INPUT IP3 vs. RF FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc04
RF FREQUENCY (MHz)
45
820
870
920
970
820
1020
870
920
970
1020
RF FREQUENCY (MHz)
LO + 2IF REJECTION vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
LO + 2IF REJECTION vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
LO + 2IF REJECTION vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
90
90
90
LO + 2IF REJECTION (dBc)
TC = -40°C
80
TC = +85°C
70
60
TC = +25°C
PIF = 0dBm
PLO = -3dBm
80
70
60
PLO = +3dBm
50
780
830
880
LO FREQUENCY (MHz)
930
80
VCC = 5.25V
VCC = 4.75V
70
VCC = 5.0V
60
PLO = 0dBm
50
50
730
PIF = 0dBm
LO + 2IF REJECTION (dBc)
PIF = 0dBm
MAX2029 toc09
RF FREQUENCY (MHz)
MAX2029 toc07
RF FREQUENCY (MHz)
MAX2029 toc08
INPUT IP3 (dBm)
920
RF FREQUENCY (MHz)
TC = -40°C
LO + 2IF REJECTION (dBc)
870
RF FREQUENCY (MHz)
MAX2029 toc05
CONVERSION LOSS (dB)
8
9
MAX2029 toc01
9
CONVERSION LOSS vs. RF FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
CONVERSION LOSS vs. RF FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc03
CONVERSION LOSS vs. RF FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
730
780
830
880
LO FREQUENCY (MHz)
930
730
780
830
880
930
LO FREQUENCY (MHz)
_______________________________________________________________________________________
9
MAX2029
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.)
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.)
Upconverter Curves
90
90
90
80
TC = +25°C
70
TC = +85°C
60
50
780
830
880
PLO = 0dBm
70
60
930
80
VCC = 4.75V
VCC = 5.0V
70
60
VCC = 5.25V
50
730
780
830
880
730
930
780
830
880
930
LO FREQUENCY (MHz)
LO FREQUENCY (MHz)
LO + 3IF REJECTION vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
LO + 3IF REJECTION vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
LO + 3IF REJECTION vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
TC = -40°C
80
TC = +25°C
70
60
100
MAX2029 toc14
PIF = 0dBm
PIF = 0dBm
LO + 3IF REJECTION (dBc)
LO + 3IF REJECTION (dBc)
TC = +85°C
90
100
MAX2029 toc13
PIF = 0dBm
90
80
PLO = -3dBm, 0dBm, +3dBm
70
780
830
880
930
90
80
VCC = 4.75V, 5.0V, 5.25V
70
60
60
730
MAX2029 toc15
LO FREQUENCY (MHz)
100
730
780
830
880
730
930
780
830
880
930
LO FREQUENCY (MHz)
LO FREQUENCY (MHz)
LO - 3IF REJECTION vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
LO - 3IF REJECTION vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
LO - 3IF REJECTION vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
LO - 3IF REJECTION (dBc)
90
80
100
TC = -40°C
TC = +85°C
70
60
PIF = 0dBm
90
80
PLO = -3dBm, 0dBm, +3dBm
70
780
830
880
LO FREQUENCY (MHz)
930
PIF = 0dBm
VCC = 5.25V
90
VCC = 5.0V
80
VCC = 4.75V
70
60
60
730
100
LO - 3IF REJECTION (dBc)
PIF = 0dBm
TC = +25°C
MAX2029 toc16
100
MAX2029 toc18
LO FREQUENCY (MHz)
MAX2029 toc17
LO + 3IF REJECTION (dBc)
PLO = -3dBm
50
730
10
PLO = +3dBm
80
PIF = 0dBm
LO - 2IF REJECTION (dBc)
LO - 2IF REJECTION (dBc)
LO - 2IF REJECTION (dBc)
TC = -40°C
PIF = 0dBm
MAX2029 toc12
LO - 2IF REJECTION vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc11
LO - 2IF REJECTION vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc10
LO - 2IF REJECTION vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
PIF = 0dBm
LO - 3IF REJECTION (dBc)
MAX2029
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
730
780
830
880
LO FREQUENCY (MHz)
930
730
780
830
880
LO FREQUENCY (MHz)
______________________________________________________________________________________
930
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
Upconverter Curves
TC = +25°C
-30
TC = -40°C
-40
-20
-30
PLO = -3dBm, 0dBm, +3dBm
-40
-10
MAX2029 toc21
MAX2029 toc20
-10
LO LEAKAGE AT RF PORT (dBm)
-20
MAX2029 toc19
LO LEAKAGE AT RF PORT (dBm)
-10
LO LEAKAGE AT RF PORT vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
LO LEAKAGE AT RF PORT vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
LO LEAKAGE AT RF PORT (dBm)
LO LEAKAGE AT RF PORT vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
-20
VCC = 4.75V, 5.0V, 5.25V
-30
-40
TC = +85°C
-50
780
830
880
930
730
780
830
880
730
930
780
830
880
930
LO FREQUENCY (MHz)
LO FREQUENCY (MHz)
LO FREQUENCY (MHz)
IF LEAKAGE AT RF vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
IF LEAKAGE AT RF vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
IF LEAKAGE AT RF vs. LO FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
TC = +25°C
-80
-70
PLO = 0dBm, +3dBm
-80
-90
MAX2029 toc24
-70
VCC = 4.75V, 5.0V
-80
-90
-90
PLO = -3dBm
TC = +85°C
-100
VCC = 5.25V
-100
-100
780
830
880
930
730
LO FREQUENCY (MHz)
780
830
880
930
730
780
830
880
930
LO FREQUENCY (MHz)
LO FREQUENCY (MHz)
RF PORT RETURN LOSS vs. RF FREQUENCY
(L-C BPF TUNED FOR 940MHz RF FREQUENCY)
MAX2029 toc25
0
5
RF PORT RETURN LOSS (dB)
730
-60
IF LEAKAGE AT RF (dBm)
TC = -40°C
-70
-60
IF LEAKAGE AT RF (dBm)
-60
-50
MAX2029 toc23
-50
MAX2029 toc22
-50
IF LEAKAGE AT RF (dBm)
-50
-50
730
L1 AND C4 BPF INSTALLED
10
15
20
25
L1 AND C4 BPF REMOVED
30
35
THE L-C BPF ENHANCES PERFORMANCE
IN THE UPCONVERTER MODE BUT LIMITS
RF BANDWIDTH
40
820
870
920
970
1020
RF FREQUENCY (MHz)
______________________________________________________________________________________
11
MAX2029
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.)
MAX2029
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
Pin Description
PIN
NAME
1, 6, 8, 14
VCC
FUNCTION
Power-Supply Connection. Bypass each VCC pin to GND with capacitors as shown in the Typical
Application Circuit.
2
RF
3
TAP
Single-Ended 50Ω RF Input/Output. This port is internally matched and DC shorted to GND through a balun.
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
11
LO1
Local Oscillator Input 1. Drive LOSEL low to select LO1.
Local Oscillator Select. Logic-control input for selecting LO1 or LO2.
15
LO2
Local Oscillator Input 2. Drive LOSEL high to select LO2.
18, 19
IF-, IF+
EP
GND
Differential IF Input/Outputs
Exposed Ground Paddle. Solder the exposed paddle to the ground plane using multiple vias.
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 50Ω single-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 single-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 differential output for downconversion, which is ideal for
providing enhanced IIP2 performance. For upconversion, 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 operate 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 architectures. 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 operation, 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 frequency 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 singleended 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 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. 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
cdmaOne is a trademark of CDMA Development Group.
12
______________________________________________________________________________________
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
A two-stage internal LO buffer allows a wide inputpower range for the LO drive. All guaranteed specifications 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 matching 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, highperformance passive mixer. Exceptional linearity is provided 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 providing enhanced IIP2 performance. Single-ended IF
applications require a 1:1 balun to transform the 50Ω differential IF impedance to 50Ω single-ended. Including
the balun, the IF return loss is better than 15dB. The differential IF is used as an input port for upconverter operation. 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 downconverter, 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 evaluation, an external low-loss 1:1 (impedance ratio) balun
transforms this impedance to a 50Ω single-ended output (see the Typical Application Circuit).
Bias Resistor
Bias current for the LO buffer is optimized by fine tuning 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 conduction 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 highfrequency circuit stability. Bypass each VCC pin with
the capacitors shown in the Typical Application Circuit.
See Table 1.
Table 1. Typical Application Circuit
Component List
COMPONENT
VALUE
C1, C2, C7, C8,
C10, C11, C12
DESCRIPTION
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
T1
1:1
U1
±1% resistor (0603)
IF balun M/A-COM: MABAES0029
MAX2029 Maxim IC
*C4 and L1 installed only when mixer is used as an upconverter.
**C5 installed only when mixer is used as a downconverter.
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 lowinductance 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.
______________________________________________________________________________________
13
MAX2029
and LO2 inputs are internally matched to 50Ω, requiring
an 82pF DC-blocking capacitor at each input.
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
MAX2029
Typical Application Circuit
T1
1
4
3
5
IF
20
C3
19
17
GND
IF18
16
C2
C12
VCC
C1
RF
RF
C4
L1
IF+
GND
VCC
GND
C5
TAP
GND
GND
15
1
MAX2029
2
14
3
13
4
12
E.P.
11
5
LO2
LO2
VCC
VCC
C11
GND
GND
LO1
LO1
C10
GND
10
LOSEL
9
VCC
8
LOBIAS
7
VCC
6
R1
VCC
LOSEL
C6
C7
C8
VCC
NOTE: L1 AND C4 USED ONLY FOR UPCONVERTER OPERATION.
C5 USED ONLY FOR DOWNCONVERTER OPERATION.
C9
Chip Information
PROCESS: SiGe BiCMOS
14
______________________________________________________________________________________
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
QFN THIN.EPS
______________________________________________________________________________________
15
MAX2029
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.)
MAX2029
High-Linearity, 815MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
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.)
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.