General Description
The MAX2351/MAX2354/MAX2358/MAX2359/MAX2530/
MAX2531/MAX2537/MAX2538 family of single- and multi-
band LNA/mixer ICs is optimized for CDMA, GSM, and
TDMA applications in both cellular and PCS bands. In
addition, the MAX2530/MAX2531/MAX2537/MAX2538 ICs
feature a GPS LNA/mixer signal path for E911 and traveler
assistance applications. The cellular and PCS signals can
be routed to either IF port. For example, one IF port can be
connected to an IF filter with 30kHz bandwidth, while the
other port can drive an IF filter with a wider bandwidth. The
GPS band has its own IF port.
To optimize dynamic range at minimum current, the
MAX2351/MAX2354/MAX2358/MAX2359/MAX2530/
MAX2531/MAX2537/MAX2538 implement multiple LNA
and mixer states, including high gain/high linearity, high
gain/low linearity, midgain, low gain, and ultra-low gain. In
high-gain/high-linearity mode, the high-IP3 LNA mini-
mizes desensitization in the presence of a large interfer-
ing signal. For the other gain states, the LNA current is
reduced to improve standby time. Each band is imple-
mented with a separate mixer to optimize performance for
the specific band, and each mixer provides multiple lin-
earity modes to optimize linearity and current consump-
tion. The ultra-low gain mode operates with very little
current, which results in significant power savings
because the handset typically spends most of its time in
this mode.
Applications
Triple-Band, Quadruple-Mode PCS/Cellular Handsets
Single-Band Handsets
E911 and Traveler Assistance Through GPS
GSM/TDMA Cellular Phones
Features
♦Eliminate Up to 35 External Components
♦Low LNA Noise Figure
PCS: 1.2dB
Cellular: 0.9dB
GPS: 1.0dB
♦No External GPS VCO Required
♦No Interstage GPS SAW Filter Required
♦Triple Band, Quadruple Mode
♦Ultra-Low Current: <10mA Average in CDMA
Phones
♦Small 28-Pin QFN Package (5mm ✕5mm)
MAX2351/4/8/9/MAX2530/1/7/8
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
________________________________________________________________ Maxim Integrated Products 1
28
IF OUTPUT MUX
27 26
21
20
19
1
2
3
18
4
17
16
5
6
15
÷2
7
25 24 23 22
89 1011 12 13 14
÷1.5
MAX2538
G1
GLNA_IN
GND
CLNA_IN
PLNA_IN
CLNA_OUT GIF-
GIF+
IFO-
IFO+
VCC
LO_OUT
BUFFEN
PLNA_OUT
BAND
IF_SEL
IF1-
IF1+
PMIX_IN
CMIX_IN
GLNA_OUT
G2
GMIX_IN
MODE
BIAS
PLL
LO_IN
SHDN
Pin Configurations
Ordering Information
19-2487; Rev 3; 1/04
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.
PART TEMP RANGE PIN-PACKAGE
MAX2351ETI -40°C to +85°C28 Thin QFN-EP*
MAX2354ETI -40°C to +85°C28 Thin QFN-EP*
MAX2358ETI -40°C to +85°C28 Thin QFN-EP*
MAX2359ETI -40°C to +85°C28 Thin QFN-EP*
MAX2530ETI -40°C to +85°C28 Thin QFN-EP*
MAX2531ETI -40°C to +85°C28 Thin QFN-EP*
MAX2537ETI -40°C to +85°C28 Thin QFN-EP*
MAX2538ETI -40°C to +85°C28 Thin QFN-EP*
*EP = exposed pad.
Pin Configurations continued at end of data sheet.
Selector Guide
PART
CELL
PCS
GPS
CELL VCO
PCS VCO
MAX2351
✓✓—
Input
MAX2354
✓——
Input —
MAX2358
✓✓—Internal divider
Input
MAX2359
—✓—
—Input
MAX2530
✓✓✓
Input Input
MAX2531
✓✓✓
Input
MAX2537
✓—✓Internal divider
Input
MAX2538
✓✓✓Internal divider
Input
MAX2351/4/8/9/MAX2530/1/7/8
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
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 +4.3V
Digital Input Voltage to GND ......................-0.3V to (VCC + 0.3V)
LNA Input (Low-Gain Mode) Level ...................................15dBm
LO Input Level ....................................................................5dBm
Digital Input Current............................................................10mA
Continuous Power Dissipation (TA= +70°C)
28-Pin QFN-EP (derate 21mW/°C
above +70°C)...................................................................1.6W
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering 10s) ..................................+300°C
DC ELECTRICAL CHARACTERISTICS
(VCC = 2.7V to 3.3V, RBIAS = 20kΩ, TA= -40°C to +85°C. Typical values are at VCC = 2.75V and TA= +25°C, unless otherwise
noted.) (Note 1)
PARAMETER CONDITIONS
MIN
TYP
MAX
UNITS
PCS MODE (see Table 1 for abbreviations)
MAX2358/MAX2359/MAX2530/MAX2538 7.4 9.0
ULG
MAX2351/MAX2531 8.1 10
MAX2358/MAX2359/MAX2530/MAX2538 8.6 11
LG MAX2351/MAX2531 9.3
11.5
MAX2358/MAX2359/MAX2530/MAX2538
26.5
32
Operating Supply Current
HGHL
MAX2351/MAX2531
27.2
33
mA
CELLULAR MODE (see Table 1 for abbreviations)
MAX2351/MAX2354/MAX2530/MAX2531 6.5 8.5
ULG
MAX2358/MAX2537/MAX2538 7.7 9.5
MAX2351/MAX2354/MAX2530/MAX2531
13.9
17
LG MAX2358/MAX2537/MAX2538
15.1 18.5
MAX2354/MAX2530
23.5
28
MAX2351/MAX2531
21.5
26MG
MAX2358/MAX2537/MAX2538
24.7 29.5
MAX2351/MAX2354/MAX2530/MAX2531
20.6
26
HGLL
MAX2358/MAX2537/MAX2538
21.8 27.5
MAX2354/MAX2530
27.7
35
MAX2351/MAX2531
25.7 33.5
Operating Supply Current
HGHL
MAX2358/MAX2537/MAX2538
28.9
36
mA
GPS MODE (MAX2530/MAX2531/MAX2538)
MAX2530/MAX2537/MAX2538
18.9
23
Operating Supply Current PLL =
low MAX2531
19.6
24 mA
SHUTDOWN MODE
Shutdown Supply Current SHDN = low, BUFFEN = PLL = low 20 µA
ALL MODES
Digital Input Logic High 1.8 V
Digital Input Logic Low 0.6 V
MAX2351/4/8/9/MAX2530/1/7/8
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
_______________________________________________________________________________________ 3
DC ELECTRICAL CHARACTERISTICS (continued)
(VCC = 2.7V to 3.3V, RBIAS = 20kΩ, TA= -40°C to +85°C. Typical values are at VCC = 2.75V and TA= +25°C, unless otherwise
noted.) (Note 1)
PARAMETER CONDITIONS
MIN
TYP
MAX
UNITS
Digital Input Current Measured at guaranteed logic threshold -10
+10
µA
Additional Current for LO_OUT
Buffer BUFFEN = high, cellular and PCS modes, PLO = -7dBm 2.4 3.5 mA
PCS MAX2358/MAX2359/MAX2530/MAX2538 5.4 7
PCS MAX2351/MAX2531 6.1 7.5
CELL MAX2351/MAX2354/MAX2530/MAX2531 4.7 6.5
Buffer-Only
Mode Supply
Mode
SHDN = low,
BUFFEN = high,
PLO = -7dBm
CELL MAX2358/MAX2537/MAX2538 5.9 7.5
mA
PLL-Only Mode
SHDN = low,
PLL = high,
PLO = -7dBm
3.2 4.5 mA
AC ELECTRICAL CHARACTERISTICS
(EV kits to evaluate the MAX2351/MAX2354/MAX2358/MAX2359/MAX2530/MAX2531/MAX2357/MAX2538, fCELL = 869MHz to
894MHz, fPCS = 1930MHz to 1990MHz, fGPS = 1575.42MHz (MAX2530/MAX2531/MAX2537/MAX2538), fIF = 183.6MHz, high-side
LO for all except GPS, 50Ωsystem impedance, VCC = 2.7V to 3.3V, RBIAS = 20kΩ, RIF0 = RIF1 = 3.3kΩ, RGIF = 8.2kΩ, LO input
power = -10dBm, TA= -40°C to +85°C. Typical values are at fCELL = 881MHz, fPCS = 1960MHz, VCC = 2.75V, LO input power = -
7dBm, unless otherwise noted.) (Note 2)
PARAMETER CONDITIONS
MIN
TYP
MAX
UNITS
OVERALL PERFORMANCE
IF Frequency Range IF0 and IF1 (Note 3) 70
183.6 400
MHz
GPS IF Frequency Range GIF (Note 3)
110 183.6 225
MHz
Cellular RF Frequency Range (Note 1)
869 894
MHz
PCS RF Frequency Range (Note 1)
1930 1990
MHz
LO Leakage to LNA inputs -40
dBm
Cell, BUFFEN = high, 50Ω load, LO input power =
-10dBm (Note 1) -10 -5
LO Output Power
PCS, BUFFEN = high, 50Ω load, LO input power =
-10dBm (Note 1) -11 -7
dBm
PLL Output Power -12
dBm
LNA PERFORMANCE (see Table 1 for abbreviations)
TA = +25°C
13.8
15
16.0
HGHL TA = -40°C to +85°C
13.3 16.5
TA = +25°C
13.5 14.5 15.5
HGLL TA = -40°C to +85°C
13.0 16.0
TA = +25°C 1.0 1.9 3.0
MG TA = -40°C to +85°C 0.5 3.0
TA = +25°C-6
-4.9
-4
LNA Gain
(Note 1)
CELL
LG/ULG
TA = -40°C to +85°C
-6.5 -3.5
dB
MAX2351/4/8/9/MAX2530/1/7/8
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
4_______________________________________________________________________________________
AC ELECTRICAL CHARACTERISTICS (continued)
(EV kits to evaluate the MAX2351/MAX2354/MAX2358/MAX2359/MAX2530/MAX2531/MAX2357/MAX2538, fCELL = 869MHz to
894MHz, fPCS = 1930MHz to 1990MHz, fGPS = 1575.42MHz (MAX2530/MAX2531/MAX2537/MAX2538), fIF = 183.6MHz, high-side
LO for all except GPS, 50Ωsystem impedance, VCC = 2.7V to 3.3V, RBIAS = 20kΩ, RIF0 = RIF1 = 3.3kΩ, RGIF = 8.2kΩ, LO input
power = -10dBm, TA= -40°C to +85°C. Typical values are at fCELL = 881MHz, fPCS = 1960MHz, VCC = 2.75V, LO input power = -
7dBm, unless otherwise noted.) (Note 2)
PARAMETER CONDITIONS
MIN TYP MAX
UNITS
TA = +25°C151617
HGHL TA = -40°C to +85°C
14.5 17.5
TA = +25°C
-5.5 -4.5 -3.2
PCS
LG/ULG TA = -40°C to +85°C-6
-4.5 -3.2
TA = +25°C16
17.7
19
LNA Gain
(Note 1)
GPS
TA = -40°C to +85°C
15.5
20
dB
TA = +25°C 0.9 1.2
HGHL/
HGLL Change over temperature from
TA = +25°C to +85°C0.2
MG TA = +25°C 2.0 2.5
CELL
LG/ULG TA = +25°C 5.0 6.5
TA = +25°C 1.2 1.5
HGHL Change over temperature from
TA = +25°C to +85°C0.2
PCS
LG/ULG TA = +25°C 5.5 7.0
TA = +25°C 1.0 1.3
LNA Noise Figure
GPS
Change over temperature from
TA = +25°C to +85°C0.2
dB
HGHL PIN = -25dBm, TA = -40°C to +85°C
(Note 1) 9.5 13
HGLL PIN = -25dBm, TA = -40°C to +85°C6.5
12.2
MG
PIN = -25dBm, TA = -40°C to +85°C13.5
17
CELL
LG/ULG
PIN = -15dBm, TA = -40°C to +85°C
20
24.6
HGHL PIN = -25dBm, TA = -40°C to +85°C
(Note 1) 812
PCS
LG/ULG
PIN = -15dBm, TA = -40°C to +85°C
20
24.4
LNA IP3
(Note 4)
GPS
PIN = -25dBm, TA = -40°C to +85°C0 4.6
dBm
MAX2351/4/8/9/MAX2530/1/7/8
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
_______________________________________________________________________________________ 5
AC ELECTRICAL CHARACTERISTICS (continued)
(EV kits to evaluate the MAX2351/MAX2354/MAX2358/MAX2359/MAX2530/MAX2531/MAX2357/MAX2538, fCELL = 869MHz to
894MHz, fPCS = 1930MHz to 1990MHz, fGPS = 1575.42MHz (MAX2530/MAX2531/MAX2537/MAX2538), fIF = 183.6MHz, high-side
LO for all except GPS, 50Ωsystem impedance, VCC = 2.7V to 3.3V, RBIAS = 20kΩ, RIF0 = RIF1 = 3.3kΩ, RGIF = 8.2kΩ, LO input
power = -10dBm, TA= -40°C to +85°C. Typical values are at fCELL = 881MHz, fPCS = 1960MHz, VCC = 2.75V, LO input power = -
7dBm, unless otherwise noted.) (Note 2)
PARAMETER CONDITIONS
MIN TYP MAX
UNITS
MIXER PERFORMANCE (see Tables 1 and 2 for abbreviations)
TA = +25°C 9.5
12.5 15.0
HGHL/
MG TA = -40°C to +85°C 8.5 16
TA = +25°C 9.0 12
14.5
HGLL/
LG TA = -40°C to +85°C8
15.5
TA = +25°C610
12.5
CELL
ULG TA = -40°C to +85°C514
TA = +25°C
10.0
13
16.5
HGHL TA = -40°C to +85°C 8.5
16.5
TA = +25°C 8.0 12
14.5
LG TA = -40°C to +85°C 6.5 12
14.5
TA = +25°C 7.5 11
13.5
PCS
ULG TA = -40°C to +85°C 6.0
14.5
TA = +25°C
12.0
15
17.5
Mixer Gain
(Note 1)
GPS
TA = -40°C to +85°C101319
dB
TA = +25°C89.5
HGHL/
MG Change over temperature from
TA = +25°C to +85°C0.3
HGLL/
LG TA = +25°C 7.2 9
CELL
ULG TA = +25°C79
TA = +25°C78.5
HGHL Change over temperature from
TA = +25°C to +85°C0.3
LG TA = +25°C 6.2 7.5
PCS
ULG TA = +25°C67.5
TA = +25°C 7.2 9
Mixer Noise
Figure
GPS
Change over temperature from
TA = +25°C to +85°C0.5
dB
MAX2351/4/8/9/MAX2530/1/7/8
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
6_______________________________________________________________________________________
Typical Operating Characteristics
(MAX2538 EV kit, fIF = 183.6MHz, high-side LO for all modes except GPS, 50Ωsystem impedance, RBIAS = 20kΩ, RIF0 = RIF1 =
3.3kΩ, RGIF = 8.2kΩ, fCELL = 881MHz, fPCS = 1960MHz, fGPS = 1575.42MHz, VCC = 2.75V, LO input power = -7dBm, HGHL mode,
TA= +25°C, unless otherwise noted.)
SUPPLY CURRENT vs. TEMPERATURE
MAX2351 toc01
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
6035-15 10
18
20
22
24
26
28
30
CELL
PCS
GPS
32
16
-40 85
2.75V, 3.0V, 3.3V
SUPPLY CURRENT vs. BIAS RESISTANCE
MAX2351 toc02
BIAS RESISTANCE (kΩ)
SUPPLY CURRENT (mA)
40302010
10
20
30
40
50
0
050
CELL
PCS
GPS
MIXER NOISE FIGURE vs. LO POWER
MAX2351 toc03
LO POWER (dBm)
MIXER NOISE FIGURE (dB)
-2-4-6-8
6
8
10
12
14
4
-10 0
CELL
PCS LOW-SIDE LO
PCS
GPS
Note 1: Guaranteed at TA= +25°C and TA= +85°C by production test, and guaranteed by design and characterization at TA= -40°C.
Note 2: Minimum and maximum specs are guaranteed by design and characterization, unless otherwise noted.
Note 3: Operating over this frequency range requires the ports to be rematched for the desired operating frequency.
Note 4: Two-tone separation is 900kHz cellular, 1.25MHz for PCS, and 1MHz for GPS.
AC ELECTRICAL CHARACTERISTICS (continued)
(EV kits to evaluate the MAX2351/MAX2354/MAX2358/MAX2359/MAX2530/MAX2531/MAX2357/MAX2538, fCELL = 869MHz to
894MHz, fPCS = 1930MHz to 1990MHz, fGPS = 1575.42MHz (MAX2530/MAX2531/MAX2537/MAX2538), fIF = 183.6MHz, high-side
LO for all except GPS, 50Ωsystem impedance, VCC = 2.7V to 3.3V, RBIAS = 20kΩ, RIF0 = RIF1 = 3.3kΩ, RGIF = 8.2kΩ, LO input
power = -10dBm, TA= -40°C to +85°C. Typical values are at fCELL = 881MHz, fPCS = 1960MHz, VCC = 2.75V, LO input power = -
7dBm, unless otherwise noted.) (Note 2)
PARAMETER CONDITIONS
MIN TYP MAX
UNITS
MAX2354/MAX2358/MAX2530/
MAX2537/MAX2538,
PIN = -20dBm (Note 1)
6 7.8
HGHL/
MG
MAX2351/MAX2531, PIN = -20dBm
4 6.5
HGLL/
LG PIN = -20dBm 3.5 6.5
CELL
ULG PIN = -20dBm
-4.5 -2.2
MAX2358/MAX2359/
MAX2530/MAX2538
35
HGHL
PIN = -20dBm
(Note 1)
MAX2351/MAX2531
2.5 4.5
LG PIN = -20dBm
-4.5 -1.8
PCS
ULG PIN = -20dBm -7
-3.6
Mixer IP3
(Note 4)
GPS
PIN = -20dBm -3 0.5
dBm
Typical Operating Characteristics (continued)
(MAX2538 EV kit, fIF = 183.6MHz, high-side LO for all modes except GPS, 50Ωsystem impedance, RBIAS = 20kΩ, RIF0 = RIF1 =
3.3kΩ, RGIF = 8.2kΩ, fCELL = 881MHz, fPCS = 1960MHz, fGPS = 1575.42MHz, VCC = 2.75V, LO input power = -7dBm, HGHL mode,
TA= +25°C, unless otherwise noted.)
MIXER GAIN vs. LO POWER
MAX2351 toc04
LO INPUT POWER (dBm)
MIXER GAIN (dB)
-2-4-6-8
10
12
14
16
8
-10 0
CELL
PCS LOW-SIDE LO
PCS
GPS
MIXER IIP3 vs. LO POWER
MAX2351 toc05
LO POWER INPUT (dBm)
MIXER IIP3 (dBm)
-2-4-6-8
0
2
4
6
8
10
-2
-10 0
CELL
GPS
PCS LOW-SIDE LO
PCS
MIXER GAIN vs. SUPPLY CURRENT
MAX2351 toc06
SUPPLY CURRENT (mA)
MIXER GAIN (dB)
3530252015
4
8
12
16
20
0
10 40
CELL
PCS
GPS
MAX2351/4/8/9/MAX2530/1/7/8
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
_______________________________________________________________________________________ 7
MIXER IIP3 vs. SUPPLY CURRENT
MAX2351 toc07
SUPPLY CURRENT (mA)
MIXER IIP3 (dBm)
3530252015
-6
-2
2
6
10
14
18
-10
10 40
PCS
GPS
CELL
LNA NOISE FIGURE vs. SUPPLY CURRENT
MAX2351 toc08
SUPPLY CURRENT (mA)
LNA NOISE FIGURE (dB)
3530252015
0.8
1.0
1.2
1.4
1.6
0.6
10 40
PCS
GPS
CELL
LNA GAIN vs. SUPPLY CURRENT
MAX2351 toc09
SUPPLY CURRENT (mA)
LNA GAIN (dB)
3530252015
10
12
14
16
18
20
8
10 40
GPS
PCS
CELL
LNA IIP3 vs. SUPPLY CURRENT
MAX2351 toc10
SUPPLY CURRENT (mA)
LNA IIP3 (dB)
3530252015
-5
0
5
10
15
20
-10
10 40
GPS
PCS
CELL
MAX2351/4/8/9/MAX2530/1/7/8
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
8_______________________________________________________________________________________
Pin Description
PIN
MAX2351
MAX2358
MAX2354 MAX2359
MAX2530
MAX2531
MAX2538
MAX2537
NAME FUNCTION
11—11
CLNA_OUT
Cellular LNA Output. Internally matched to 50Ω including an
on-chip DC-blocking capacitor.
2—2 2—
PLNA_IN
PCS LNA Input. Requires a DC-blocking capacitor that can be
used as part of the matching network.
33, 27 3 3 3 GND Ground
44—44
CLNA_IN
Cellular LNA Input. Requires a DC-blocking capacitor that can
be used as part of the matching network.
55555SHDN
Shutdown Logic Input. A logic low shuts off the device, except
LO_OUT and PLL buffers, which are controlled by BUFFEN
and PLL pins, respectively.
6, 8
2, 6, 8
1, 4, 6, 8,
24 —2
N.C./GND
Pin can be grounded or left open-circuit.
——— 6 6
GLNA_IN
GPS LNA Input. Requires a DC-blocking capacitor, which can
be used as part of the matching network.
77777G1
Operating Mode Logic Input. Sets device operating modes.
See Table 2 for details.
——— 8 8
GLNA_OUT
GPS LNA Output. Internally matched to 50Ω including an on-
chip DC-blocking capacitor.
99999G2
Operating Mode Logic Input. Sets device operating modes.
See Table 2 for details.
10, 20, 21
10, 20,
21, 25, 28
10, 20,
21, 27
—
25, 28
I.C. Internally Connected. Do not make connections to this pin.
———1010
GMIX_IN
GPS Mixer Input. Requires a DC-blocking capacitor, which
can be used as an interstage coupling capacitor.
11 11 11 11 11 MODE Operating Mode Logic Input. Sets device operating modes.
See Table 2 for details.
12 12 12 12 12 BIAS
Bias Setting Pin. For nominal bias, connect a 20kΩ resistor to
ground. Adjust RBIAS to alter the linearity of the mixers and
LNAs.
13 13 13 13 13 PLL
Dual-Function Pin. LO buffer output port for driving an external
PLL synthesizer. A logic high (through a 10kΩ resistor)
enables the PLL buffer. A logic low disables the PLL buffer.
Leave open if not used. If open, PLL is low.
14 14 14 14 14 LO_IN LO Input. Internally matched to 50Ω, including DC-blocking
capacitor.
15 15 15 15 15
BUFFEN
LO Buffer Enable Logic Input. A logic high enables the
external LO buffer port. Floats low.
Detailed Description
Signal Paths and Operation Modes
The MAX2351/MAX2354/MAX2358/MAX2359/MAX2530/
MAX2531/MAX2537/MAX2538 have multiple RF signal
paths. The cellular signal path has five modes of opera-
tion using a 4-gain-mode LNA and a 3-gain-mode mixer.
Similarly, the PCS signal path has four modes of opera-
tion made up of a 2-gain-mode LNA and a 3-gain-mode
mixer. The cellular and PCS mixer’s IF output can be
routed to either the IF0 or IF1 port. The GPS signal path
consists of a single-mode GPS, LNA, and mixer, which
has a dedicated IF output port. Tables 1 and 2 summa-
rize the modes of operation.
Low-Noise Amplifiers
The MAX2351/MAX2358/MAX2530/MAX2531/MAX2538
incorporate three LNA signal paths for the cellular,
PCS, and GPS bands. Using Maxim’s latest advanced
BiCMOS SiGe process, these LNAs deliver 1dB noise
figure for cellular, PCS, and GPS bands. The cellular
band LNAs have four modes of operation: high gain/
high linearity (HGHL), high gain/low linearity (HGLL),
midgain (MG), and low gain (LG). The PCS band LNAs
have two modes of operation: high gain/high linearity
and low gain. The GPS LNA has only one mode.
The BAND input selects the frequency band. The G1,
G2, and MODE pins are logic inputs that control the
LNA modes (see Table 2). Use HGHL mode when high
MAX2351/4/8/9/MAX2530/1/7/8
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
_______________________________________________________________________________________ 9
Pin Description (continued)
PIN
MAX2351
MAX2358
MAX2354 MAX2359
MAX2530
MAX2531
MAX2538
MAX2537
NAME FUNCTION
16 16 16 16 16
LO_OUT
PCS and Cellular LO Output. Output frequency is equal to
mixer LO frequency. Internally matched with DC-blocking
capacitor. If not used, connect pin to ground or leave open.
17 17 17 17 17 VCC 2.7V to 3.3V Supply Pin. Connect a 100pF bypass capacitor
as close as possible to the pin.
18, 19
18, 19 18, 19 18, 19 18, 19 IF0+, IF0-
Differential IF Output Port 0. Requires a pullup inductor and a
DC-blocking capacitor at each pin, which can be used as part
of the matching network. If not used, connect pins to VCC.
———
20, 21 20, 21 GIF+, GIF-
GPS IF Output. Requires a pullup inductor and a DC-blocking
capacitor at each pin, which can be used as part of the
matching network. If not used, connect pins to VCC.
22, 23
22, 23 22, 23 22, 23 22, 23 IF1+, IF1-
Differential IF Output Port 1. Requires a pullup inductor and a
DC-blocking capacitor at each pin, which can be used as part
of the matching network. If not used, connect pins to VCC.
24 24 — 24 24
CMIX_IN
Cellular Mixer Input. Internally matched to 50Ω, including an
on-chip DC-blocking capacitor.
25 — 25 25 —
PMIX_IN
PCS Mixer Input. Internally matched to 50Ω. Requires a DC-
blocking capacitor.
26 26 26 26 26 IF_SEL IF Select Logic Input. Logic low selects IF0 port, and logic
high selects IF1 port.
27 — — 27 27 BAND BAND Logic Input. See Table 2 for details.
28 — 28 28 —
PLNA_OUT
PCS LNA Output. Requires a pullup inductor and a DC-
blocking capacitor, which can be used as part of the
matching network.
EP EP EP EP EP Exposed Exposed Pad. RF and DC ground.
MAX2351/4/8/9/MAX2530/1/7/8
LNA linearity is required for cross-modulation suppres-
sion. Use HGLL mode when the transmitter is off and
cross-modulation is not a concern. The LNAs are
designed to minimize input VSWR when changing
modes. Use low-gain mode for receiving large signals
and when high sensitivity is not required. The cellular
band provides an additional gain mode (MG) for
improved IP3 margin in CDMA medium-level interfer-
ence condition.
Downconverters
The downconverters in these devices are double-
balanced mixers. The cellular and PCS mixers have
three gain modes: high linearity, low linearity, and low
gain. The cellular and PCS mixers can route the IF sig-
nal to either IF0 or IF1 port. IF_SEL = low routes the IF
signal to IF0 port; IF_SEL = high routes the IF signal to
IF1 port. The GPS mixer has only one mode, and it has
a dedicated IF port (Table 2). All mixer inputs include
on-chip matching networks to reduce the external com-
ponent count.
LO Generation
Table 3 shows the options for the LO generation. The
on-chip LO divider or multiplier allows triple-band oper-
ation with a single VCO. The MAX2351 and MAX2531
have an LO multiplier that doubles the cellular band
VCO for PCS band operation. Conversely, the
MAX2358, MAX2537, and MAX2538 include an LO
divider that divides the PCS VCO frequency down to
cellular frequency band. The GPS LO is generated by a
fractional frequency scaler, which enables a single
VCO for operation in all three bands. The MAX2530 is
designed for operation with a dual-band VCO.
The PLL buffer output is provided for phase-locked
loop operation. The PLL pin serves two functions: RF
output signal for phase-locked loop operation and logic
input to enable or disable this buffer. A logic high
applied to this pin enables the PLL buffer; a logic low
disables the buffer.
A buffered LO output is provided to drive a transmit
upconverter. It is controlled by the BUFFEN input. For
time-division duplex applications, the buffer is available
to drive the transmitter even when the rest of the chip is
shut down. The port is internally AC-coupled, so a DC-
blocking capacitor is not required.
Bias Control
The bias control input (BIAS pin) controls the IC bias
current. Typically, connect a 20kΩresistor to ground for
normal operation. Smaller bias resistor values increase
the supply current and linearity.
Applications Information
Cascaded LNA/Mixer Performance
The LNA and mixer design optimizes cascaded perfor-
mance in all gain and linearity modes. In high-gain/high-
linearity mode, both the LNA and mixer have low noise
figure, high gain, and high linearity. In this mode, the
LNA has extra-high linearity for superior cross-modula-
tion suppression. The high-gain/low-linearity mode is
used when the transmitter is off and cross-modulation is
not a concern. In the ultra-low-gain mode, the received
signal is strong enough that sensitivity is not the limiting
factor. This mode focuses on minimizing supply current.
Tables 4, 5, 6 summarize the cascaded performance.
LNAs
The LNA inputs require external matching networks to
optimize gain, linearity, noise figure, and return loss. A
simple LC match is sufficient as shown in the Typical
Application Circuit. The cellular and GPS LNA outputs
are internally matched. The PCS LNA output requires
an inductor pullup to VCC and a series capacitor as
external matching elements. Table 7, 8, 9 show the S-
parameters for each LNA. Tables 13, 14, 15 show LNA
noise parameters.
Mixers
All mixer inputs are internally matched. The GPS and
PCS mixer inputs require a DC-blocking capacitor; the
cellular mixer does not. All IF outputs must be induc-
tively pulled up to VCC. The inductive pullup may be
used as part of the matching network. Because the dif-
ferential IF output port is high impedance, a load resis-
tor is typically used to ease the matching and establish
the gain. A 3.3kΩresistor is recommended for IF0 and
IF1, and 8.2kΩfor the GIF port. The equivalent parallel
RC impedance of the IF ports is typically 12.2kΩin par-
allel with 0.75pF. Tables 10, 11, 12 show S-parameters
for the mixer input points.
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
10 ______________________________________________________________________________________
ABBREVIATION MODE
HGHL High gain/high linearity
HGLL High gain/low linearity
MG Midgain
LG Low gain
ULG Ultra-low gain
HL High linearity
LL Low linearity
Table 1. Abbreviation for LNA and Mixer
Modes
GPS Interstage
The GPS LNA and mixer include on-chip resonant tanks
that can be used instead of a saw filter for image sup-
pression. These tanks are coupled by an external L-C
network between pins 8 and 10 as shown in the Typical
Application Circuit.
Layout Considerations
Keep RF signal lines as short as possible to minimize
losses and radiation. Use controlled impedance on all
high-frequency traces. Use high-Q (>40) components
for the LNA input-matching circuit to achieve the lowest
possible noise figure. At the mixer outputs, keep the
differential signal lines together and of equal length to
ensure signal balance. For proper operation, solder the
exposed paddle evenly to the ground plane. Use abun-
dant ground vias between RF traces to minimize unde-
sired coupling.
MAX2351/4/8/9/MAX2530/1/7/8
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
______________________________________________________________________________________ 11
BAND OPERATION MODE LNA MIXER IF PORT G2 G1
MODE
BAND
HGHL HGHL HL IF0 or IF1 0010
HGLL HGLL LL IF0 or IF1 0000
MG MG HL IF0 or IF1 0 1 X 0
LG LG LL IF0 or IF1 1 1 X 0
Cellular
ULG LG LG IF0 or IF1 1 0 X 0
HGHL HGHL HL IF0 or IF1 0011
LG LG LL IF0 or IF1 1 1 X 1PCS
ULG LG LG IF0 or IF1 1 0 X 1
GPS* GPS GPS GPS GIF 0001
Table 2. Modes of Operation
*MAX2530/MAX2531/MAX2537/MAX2538 only.
X= Don’t care.
PART VCO FREQUENCY CELLULAR LO
FREQUENCY
PCS LO FREQUENCY
GPS LO
FREQUENCY
MAX2351 Cell Band VCO fVCO 2 x fVCO —
MAX2354 Cell Band VCO fVCO ——
MAX2358 PCS Band VCO 0.5 x fVCO fVCO —
MAX2359 PCS Band VCO — fVCO —
MAX2530 Cell and PCS Dual-Band VCO fVCO fVCO (2/3) fVCO
MAX2531 Cell Band VCO fVCO 2 x fVCO (4/3) fVCO
MAX2537 PCS Band VCO 0.5 x fVCO —(2/3) fVCO
MAX2538 PCS Band VCO 0.5 x fVCO fVCO (2/3) fVCO
Table 3. LO Frequency Plan
MAX2351/4/8/9/MAX2530/1/7/8
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
12 ______________________________________________________________________________________
PARAMETER HGHL HGLL MG LG ULG
Conversion Gain (dB) 25.00 24.00 12.00 4.50 2.50
Noise Figure (dB) 1.91 1.79 9.10 14.50 14.50
Input IP3 (dBm) -5.14 -6.21 7.75 13.59 5.44
Supply Current (mA) (MAX2351/MAX2354/MAX2530/MAX2531)
27.70 20.60 23.50 13.90 6.50
Supply Current (mA) (MAX2358/MAX2537/MAX2538) 28.90 21.80 24.70 15.10 7.70
Table 4. Typical Cascade Performance of Cellular-Band Receiver with 2.5dB Interstage
Loss (RBIAS = 20kΩ)
PARAMETER HGHL LG ULG
Conversion Gain (dB)
26.00 4.50 4.00
Noise Figure (dB) 1.72 13.16 13.16
Input IP3 (dBm) -8.54 +5.44 +3.46
Supply Current (mA)
(MAX2358/MAX2359/
MAX2530/MAX2538)
26.50 8.60 7.40
Supply Current (mA)
(MAX2351/MAX2531)
27.20 9.30 8.10
Table 5. Typical Cascade Performance of
PCS-Band Receiver with 2.5dB Interstage
Loss (RBIAS = 20kΩ)
PARAMETER
WITH 2.5dB
INTERSTAGE
SAW LOSS
WITH LC
INTERSTAGE
MATCH
Conversion Gain (dB) 30.50 29.09
Noise Figure (dB) 1.32 1.99
Input IP3 (dBm) -15.05 -14.35
Supply Current (mA)
(MAX2530/MAX2537/
MAX2538)
18.90 18.90
Supply Current (mA)
(MAX2531) 19.60 19.60
Image Suppression (dB)
25 15
Table 6. Typical Cascade Performance
of GPS Band (RBIAS = 20kΩ)
MAX2351/4/8/9/MAX2530/1/7/8
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
______________________________________________________________________________________ 13
S11 S21 S12 S22
FREQUENCY
(Hz) MAG PHASE
(DEG) MAG PHASE
(DEG) MAG PHASE
(DEG) MAG PHASE
(DEG)
100M 835m -15.10 554.2m -115.6 736.4µ 121.10 995.1m -8.043
200M 779.9m -25.60 874.9m -120.1 1.099m 119.60 986.1m -16.150
300M 748.7m -35.09 1.301 -121.0 1.65m 175.20 971.9m -24.720
400M 729.4m -44.95 1.883 -127.0 5.01m 197.80 949.1m -34.160
500M 709.9m -55.94 2.599 -137.2 11.55m 195.50 909.9m -44.900
600M 687.1m -68.06 3.396 -150.1 22.25m 188.20 845m -57.540
700M 640.3m -81.90 4.244 -166.0 37.71m 175.90 735.4m -72.430
800M 557.8m -96.31 4.959 -184.3 56.79m 160.40 570.6m -89.160
810M 547.6m -97.70 5.341 -203.5 76.06m 158.70 365.8m -106.200
820M 537.1m -99.06 5.358 -205.4 77.86m 157.10 344.5m -107.800
830M 526.3m -100.4 5.37 -207.3 79.62m 155.40 323.3m -109.500
840M 515.2m -101.70 5.379 -209.1 81.34m 153.70 302.2m -111.100
850M 503.9m -103.00 5.385 -211.0 83.03m 152.10 281.1m -112.600
860M 492.5m -104.20 5.386 -212.8 84.68m 150.40 260.2m -114.200
870M 480.8m -105.40 5.385 -214.6 86.29m 148.70 239.5m -115.700
880M 469.1m -106.50 5.38 -216.4 87.85m 147.10 218.9m -117.200
890M 457.2m -107.60 5.372 -218.1 89.38m 145.40 198.6m -118.700
900M 445.3m -108.60 5.362 -219.9 90.86m 143.70 178.6m -120.100
1G 330.5m -115.10 5.348 -221.6 92.3m 128.00 158.9m -121.500
1.25G 207.7m -94.89 4.556 -256.9 116m 97.48 216.9m 27.620
1.5G 283.4m -86.74 3.71 -281.6 129.9m 76.60 412.3m 9.951
1.75G 382.4m -99.91 3.071 -301.6 135.2m 60.00 529.5m -2.140
2G 492m -120.90 2.536 -320.9 132.1m 44.58 628.6m -12.040
2.25G 629.8m -149.50 1.933 -342.4 110m 29.61 739.7m -22.720
2.5G 762.5m -190.70 989.2m -364.5 49.89m 50.28 853.3m -38.460
2.75G 703.3m -242.40 549.2m -289.0 128.9m 89.36 833.5m -58.420
3G 490m -287.30 1.273 -295.0 198.4m 69.98 707.4m -70.290
3.25G 335.7m -321.00 1.579 -312.0 238m 55.30 626.1m -75.550
3.5G 258.5m -352.10 1.697 -326.7 264.9m 43.14 575.5m -78.930
3.75G 212.7m -22.90 1.723 -338.6 284m 32.81 549.8m -81.490
4G 189.9m -51.60 1.729 -348.9 298.7m 23.80 536.3m -84.470
Table 7. S-Parameters for Cellular LNA in HGHL Mode
MAX2351/4/8/9/MAX2530/1/7/8
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
14 ______________________________________________________________________________________
S11 S21 S12 S22
FREQUENCY
(Hz) MAG PHASE
(DEG) MAG PHASE
(DEG) MAG PHASE
(DEG) MAG PHASE
(DEG)
100M 826.3m -18.04 28.510 163.100 8.437m 86.50 947.8m -7.457
200M 730m -33.35 25.050 141.400 15.81m 72.78 870.8m -25.890
300M 623.7m -44.60 21.350 125.200 21.38m 64.46 795.4m -38.050
400M 530.6m -52.40 18.100 112.300 25.89m 58.80 740.8m -47.460
500M 508.6m -55.46 14.650 106.400 25.66m 58.70 583.3m -53.250
600M 419.8m -62.24 13.410 94.840 32.75m 54.65 657.3m -58.520
700M 379.3m -65.01 11.750 87.380 36.18m 52.16 647.1m -64.100
800M 351.2m -67.46 10.450 80.970 39.47m 50.17 642.7m -68.980
900M 329.5m -69.90 9.419 75.050 42.7m 48.26 643.4m -73.540
1G 310.7m -72.33 8.565 69.280 45.59m 46.42 647.5m -77.870
1.1G 293.7m -74.30 7.822 63.670 48.5m 44.57 652.1m -81.950
1.2G 280.4m -75.57 7.158 58.350 51.34m 42.79 657.4m -85.690
1.3G 271.9m -76.33 6.573 53.390 54.13m 40.96 663.8m -89.130
1.4G 267.7m -76.88 6.065 48.740 56.8m 39.06 672.2m -92.320
1.5G 266.6m -77.55 5.622 44.290 59.33m 37.14 682.5m -95.320
1.6G 267.8m -78.48 5.233 40.010 61.75m 35.20 693.8m -98.200
1.7G 270.5m -79.62 4.887 35.860 64.01m 33.18 705.1m -101.000
1.8G 274.6m -80.87 4.576 31.840 66.01m 31.12 715.9m -103.600
1.9G 280.4m -82.23 4.296 27.970 67.69m 29.12 726.3m -106.100
1.91G 281.1m -82.38 4.270 27.600 67.84m 28.93 727.3m -106.300
1.92G 281.8m -82.53 4.244 27.220 67.99m 28.74 728.4m -106.600
1.93G 282.5m -82.68 4.218 26.840 68.14m 28.55 729.4m -106.800
1.94G 283.2m -82.82 4.192 26.470 68.28m 28.36 730.4m -107.000
1.95G 284m -82.98 4.167 26.090 68.43m 28.18 731.5m -107.300
1.96G 284.8m -83.13 4.142 25.720 68.57m 27.99 732.5m -107.500
1.97G 285.6m -83.29 4.117 25.350 68.71m 27.81 733.5m -107.700
1.98G 286.4m -83.45 4.093 24.980 68.85m 27.63 734.5m -108.000
1.99G 287.2m -83.61 4.069 24.610 68.99m 27.45 735.6m -108.200
2G 288m -83.77 4.045 24.250 69.12m 27.27 736.6m -108.400
2.1G 297.2m -85.53 3.818 20.650 70.37m 25.57 747m -110.600
2.2G 307.7m -87.49 3.614 17.180 71.48m 24.03 757.6m -112.700
2.3G 319.5m -89.65 3.429 13.830 72.5m 22.66 768.5m -114.600
2.4G 332.6m -92.00 3.264 10.590 73.47m 21.46 779.7m -116.600
2.5G 346.9m -94.53 3.116 7.455 74.47m 20.45 791.3m -118.400
2.6G 362.5m -97.25 2.984 4.420 75.59m 19.61 803.2m -120.300
2.7G 379.7m -100.20 2.870 1.4740 76.93m 18.96 815.5m -122.100
2.8G 398.1m -103.60 2.775 -1.475 78.78m 18.45 828.4m -124.000
2.9G 415.5m -107.70 2.697 -4.627 81.42m 17.73 840.5m -126.000
3G 428.9m -112.50 2.622 -8.150 84.47m 16.44 849.8m -127.900
Table 8. S-Parameters for PCS LNA in HGHL Mode
MAX2351/4/8/9/MAX2530/1/7/8
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
______________________________________________________________________________________ 15
S11 S21 S12 S22
FREQUENCY
(Hz) MAG PHASE
(DEG) MAG PHASE
(DEG) MAG PHASE
(DEG) MAG PHASE
(DEG)
100M 897m -8.953 391.4m -106.5 279.4µ 142.10 996.2m -6.446
200M 878.4m -17.210 640.8m -109.6 645.4µ 131.50 989.8m -12.850
300M 859m -25.060 892.3m -106.4 883.4µ 150.50 980.7m -19.390
400M 839.1m -32.680 1.231 -104.0 1.579m 178.90 968.7m -26.200
500M 818.7m -40.390 1.691 -104.3 3.26m 191.20 953.2m -33.480
600M 802.3m -47.710 2.249 -107.0 5.893m 194.80 933.8m -41.400
700M 787.6m -55.560 2.97 -111.9 10m 192.70 907.6m -50.410
800M 772m -64.070 3.867 -119.2 15.78m 187.20 869.1m -60.940
900M 751.1m -73.420 4.916 -129.2 23.39m 179.40 810.1m -73.480
1G 718.6m -83.770 6.029 -141.6 32.81m 169.50 720.9m -88.550
1.1G 666.6m -94.890 7.037 -155.9 43.28m 157.90 596.2m -106.500
1.2G 593.1m -105.900 7.742 -171.2 53.35m 145.40 444.7m -128.200
1.3G 506.2m -115.600 8.033 -186.2 61.65m 133.30 293.1m -156.200
1.4G 419.5m -123.100 7.955 -199.9 67.69m 122.40 186.2m -199.700
1.5G 344m -127.900 7.64 -211.7 71.78m 113.30 177.6m -255.300
1.51G 337.2m -128.200 7.601 -212.8 72.11m 112.50 181.8m -260.000
1.52G 330.7m -128.500 7.561 -213.9 72.43m 111.70 186.6m -264.400
1.53G 324.3m -128.800 7.52 -214.9 72.73m 110.90 191.8m -268.500
1.54G 318m -129.000 7.479 -216.0 73.03m 110.10 197.4m -272.400
1.55G 311.9m -129.300 7.437 -217.0 73.32m 109.30 203.3m -276.000
1.56G 306m -129.500 7.394 -218.0 73.59m 108.60 209.5m -279.500
1.57G 300.2m -129.600 7.351 -219.0 73.86m 107.90 215.8m -282.700
1.58G 294.6m -129.800 7.307 -219.9 74.12m 107.20 222.3m -285.700
1.59G 289.2m -129.900 7.263 -220.9 74.38m 106.50 228.9m -288.500
1.6G 283.9m -130.000 7.219 -221.8 74.62m 105.80 235.5m -291.100
1.7G 239.4m -130.000 6.777 -230.4 76.78m 99.70 300.4m -311.100
1.8G 208m -128.700 6.359 -237.7 78.68m 94.75 356.2m -324.000
1.9G 186m -126.900 5.979 -244.1 80.58m 90.66 401.9m -333.500
2G 170.2m -124.800 5.637 -249.9 82.6m 87.15 439.3m -341.000
2.1G 158.8m -122.800 5.328 -255.0 84.75m 84.05 469.6m -347.300
2.2G 150.9m -120.900 5.05 -259.7 86.99m 81.26 494.3m -352.800
2.3G 145.5m -119.300 4.802 -264.0 89.28m 78.68 514.2m -357.600
2.4G 142.1m -118.200 4.58 -268.0 91.57m 76.29 530m -2.000
2.5G 139.8m -117.500 4.382 -271.7 93.8m 74.07 542.2m -6.000
2.6G 138.3m -117.200 4.204 -275.2 95.98m 72.04 551.3m -9.700
2.7G 137m -117.400 4.044 -278.5 98.11m 70.19 558m -13.100
2.8G 133.5m -117.700 3.895 -281.8 100.1m 68.60 562.3m -16.100
2.9G 128.4m -114.600 3.727 -285.1 102.5m 67.51 567m -18.600
3G 139.9m -109.200 3.557 -287.2 106m 66.24 574.8m -21.200
Table 9. S-Parameters for GPS LNA
MAX2351/4/8/9/MAX2530/1/7/8
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
16 ______________________________________________________________________________________
S11 S21 S12 S22
FREQUENCY
(Hz) MAG PHASE
(DEG) MAG PHASE
(DEG) MAG PHASE
(DEG) MAG PHASE
(DEG)
3.1G 162.7m -110.6 3.458 -288.7 109.3m 64.45 579.9m -24.1
3.2G 182.9m -117.0 3.422 -290.4 111.8m 62.71 581.1m -26.8
3.3G 193.1m -126.3 3.422 -293.0 113.9m 61.32 580.5m -29.2
3.4G 187.8m -135.5 3.405 -296.5 116.3m 60.27 580.1m -31.4
3.5G 173.9m -141.5 3.340 -300.1 119.1m 59.34 580.8m -33.4
3.6G 161.5m -144.5 3.251 -303.4 122.2m 58.40 581.9m -35.3
3.7G 153.7m -145.6 3.161 -306.2 125.5m 57.45 582.9m -37.3
3.8G 150m -146.3 3.080 -308.8 128.9m 56.54 584m -39.1
3.9G 149.2m -146.9 3.008 -311.2 132.4m 55.68 585.3m -41.0
4G 150.3m -147.8 2.945 -313.5 136.2m 54.86 587m -42.7
Table 9. S-Parameters for GPS LNA (continued)
S11
FREQUENCY
(Hz) MAG PHASE (DEG)
100M 997.8m -6.397
200M 993.1m -13.080
300M 984.5m -20.480
400M 968.2m -29.270
500M 941.8m -40.340
600M 879m -56.150
700M 739.9m -80.690
800M 475.4m -123.700
810M 444.8m -129.900
820M 414.7m -136.700
830M 385.9m -144.100
840M 359.1m -152.300
850M 335.2m -161.200
860M 314.9m -170.900
870M 299.3m -181.400
Table 10. S-Parameters for Cellular Mixer in High-Linearity Mode
S11
FREQUENCY
(MHz) MAG PHASE (DEG)
880M 289m -192.4
890M 284.4m -203.5
900M 285.5m -214.6
1G 451.9m -286.0
1.25G 734.2m -337.2
1.5G 815.1m -356.3
1.75G 846.4m -8.0
2G 860.2m -16.9
2.25G 864.6m -16.9
2.5G 862m -16.9
2.75G 850.6m -16.9
3G 846.6m -16.9
3.25G 857.1m -16.9
3.5G 860.5m -16.9
3.75G 857.2m -16.9
4G 849.3m -16.9
MAX2351/4/8/9/MAX2530/1/7/8
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
______________________________________________________________________________________ 17
S11
FREQUENCY
(Hz) MAG PHASE (DEG)
100M 949.1m -3.234
200M 942.3m -6.090
300M 933.3m -8.977
400M 922.8m -11.780
500M 904.9m -14.700
600M 895.6m -17.390
700M 881.2m -20.300
800M 863.9m -23.310
900M 845.8m -26.410
1G 826.6m -29.830
1.1G 804m -33.700
1.2G 776.7m -38.130
1.3G 742.2m -43.330
1.4G 696.8m -49.580
1.5G 635.2m -57.090
1.6G 554.4m -66.040
1.7G 454.4m -77.180
1.8G 335.7m -92.710
1.9G 207.5m -120.400
1.91G 195.6m -124.700
1.92G 184.3m -129.500
1.93G 173.7m -134.800
1.94G 164.1m -140.700
1.95G 155.7m -147.200
Table 11. S-Parameters for PCS Mixer in High Linearity Mode
S11
FREQUENCY
(Hz) MAG PHASE (DEG)
1.96G 148.7m -154.3
1.97G 143.5m -162.0
1.98G 140.2m -170.2
1.99G 139.2m -178.6
2G 140.4m -187.2
2.1G 244.9m -246.7
2.2G 402.9m -273.1
2.3G 551.8m -290.0
2.4G 675.8m -302.9
2.5G 773.9m -313.4
2.6G 851.9m -322.3
2.7G 911.7m -330.3
2.8G 948.5m -337.6
2.9G 964m -343.9
3G 964.3m -349.2
3.1G 956.1m -353.4
3.2G 944.9m -356.6
3.3G 934.5m -359.1
3.4G 928m -1.0
3.5G 926.9m -2.7
3.6G 929.9m -4.2
3.7G 934.9m -5.8
3.8G 939.9m -7.4
3.9G 944.2m -9.1
4G 947.8m -10.6
MAX2351/4/8/9/MAX2530/1/7/8
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
18 ______________________________________________________________________________________
S11
FREQUENCY
(Hz) MAG PHASE (DEG)
100M 955.2m -3.662
200M 947.6m -6.944
300M 938m -10.250
400M 926.8m -13.550
500M 910.8m -16.840
600M 896m -20.300
700M 877.6m -23.970
800M 854.6m -27.950
900M 825.7m -32.250
1G 790.1m -37.090
1.1G 743.8m -42.690
1.2G 681.1m -49.330
1.3G 594.6m -57.350
1.4G 474.7m -67.280
1.5G 307.7m -79.620
1.51G 288.2m -80.960
1.52G 268.2m -82.330
1.53G 247.7m -83.700
1.54G 226.8m -85.080
1.55G 205.4m -86.460
1.56G 183.7m -87.840
1.57G 161.5m -89.200
1.58G 139m -90.520
1.59G 116.2m -91.770
Table 12. S-Parameters for GPS Mixer in High Linearity Mode
S11
FREQUENCY
(Hz) MAG PHASE (DEG)
1.6G 93.14m -92.870
1.7G 143.3m 67.370
1.8G 357.5m 53.140
1.9G 522.6m 40.470
2G 639m 30.150
2.1G 718.6m 21.880
2.2G 772.8m 15.230
2.3G 811.4m 9.874
2.4G 842.9m 5.410
2.5G 869.8m 1.356
2.6G 890.8m -2.443
2.7G 906.1m -5.968
2.8G 916.8m -9.216
2.9G 924m -12.200
3G 928.9m -14.940
3.1G 932.3m -17.490
3.2G 934.5m -19.880
3.3G 935.8m -22.150
3.4G 936.4m -24.300
3.5G 936.4m -26.360
3.6G 936m -28.340
3.7G 935.3m -30.240
3.8G 934.3m -32.080
3.9G 933.1m -33.880
4G 931.7m -35.620
MAX2351/4/8/9/MAX2530/1/7/8
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
______________________________________________________________________________________ 19
FREQUENCY
(MHz)
NFMIN
(dB)
|ΓOPT|∠ΓOPT
RN (Ω)
1800 0.89 0.22 -123 4.3
1900 0.89 0.19 -129 4.2
1910 0.89 0.19 -130 4.2
1920 0.89 0.19 -131 4.2
1930 0.89 0.18 -131 4.2
1940 0.90 0.18 -133 4.1
1950 0.90 0.18 -134 4.1
1960 0.90 0.18 -134 4.1
1970 0.90 0.18 -135 4.1
1980 0.90 0.18 -136 4.1
1990 0.90 0.18 -137 4.1
2000 0.90 0.17 -138 4.1
2100 0.91 0.17 -147 4.0
Table 14. Noise Parameters for PCS LNA
in HGHL Mode
FREQUENCY
(MHz)
NFMIN (dB)
|ΓOPT|
∠ΓOPT
RN (Ω)
1400 0.71 0.20 78 4.7
1500 0.73 0.19 84 4.6
1510 0.74 0.19 85 4.6
1520 0.74 0.19 85 4.6
1530 0.74 0.19 86 4.6
1540 0.74 0.19 86 4.6
1550 0.75 0.19 87 4.6
1560 0.75 0.19 87 4.6
1570 0.75 0.19 88 4.6
1580 0.75 0.19 88 4.6
Table 15. Noise Parameters for GPS LNA
in HGHL Mode
Chip Information
TRANSISTOR COUNT: 2538
PROCESS: BiCMOS
FREQUENCY
(MHz)
NFMIN (dB)
|ΓOPT|
∠ΓOPT
RN (Ω)
700 0.75 0.15 107 4.0
800 0.76 0.16 117 3.9
810 0.76 0.16 118 3.9
820 0.76 0.17 119 3.8
830 0.76 0.17 120 3.8
840 0.77 0.17 121 3.8
850 0.77 0.17 122 3.8
860 0.78 0.17 123 3.8
870 0.77 0.17 123 3.8
880 0.77 0.17 124 3.8
890 0.77 0.17 125 3.7
900 0.78 0.18 126 3.7
1000 0.79 0.19 134 3.6
Table 13. Noise Parameters for Cellular
LNA in HGHL Mode
MAX2351/4/8/9/MAX2530/1/7/8
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
20 ______________________________________________________________________________________
Typical Application Circuit
28
IF OUTPUT MUX
CELL
PCS
27 26
21
8.2kΩ
10kΩ
20kΩ
RBIAS
20
3.3kΩ
3.3kΩ
19
PCS
CELL
GPS
7.5nH
1
1nH
6800pF
6800pF
VCC
VCC
VCC
VCC
2
8.2pF
1.2pF
3
3.3nH
18
6800pF
IF1
IF0
BUFFEN
PLL ENABLE
VCO
XTAL
MODE
GPS
IF
4
17
16
5
6
15
÷2
7G1
100pF
25 24 23 22
89 1011 12 13
LOOP
FILTER
14
2.4pF
2.2nH
6800pF
1.8pF
0.8pF 0.8pF
PLL
÷1.5
5.1nH
MAX2538
IF_SEL
SHDN
LO_OUT
MAX2351/4/8/9/MAX2530/1/7/8
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
______________________________________________________________________________________ 21
Pin Configurations (continued)
28
IF OUTPUT MUX
27 26
21
20
19
1
2
3
18
4
17
16
5
6
15
X2
7G1
N.C./GND
GND
CLNA_IN
PLNA_IN
CLNA_OUT
25 24 23 22
89 1011 12 13 14
I.C.
I.C.
IFO-
IFO+
VCC
LO_OUT
BUFFEN
MAX2351
PLNA_OUT
BAND
IF_SEL
IF1-
IF1+
PMIX_IN
CMIX_IN
N.C./GND
G2
I.C.
MODE
BIAS
PLL
LO_IN
SHDN
MAX2351/4/8/9/MAX2530/1/7/8
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
22 ______________________________________________________________________________________
Pin Configurations (continued)
28
IF OUTPUT MUX
27 26
21
20
19
1
2
3
18
4
17
16
5
6
15
7
25 24 23 22
89 1011 12 13 14
G1
N.C./GND
GND
CLNA_IN
N.C./GND
CLNA_OUT I.C.
I.C.
IFO-
IFO+
VCC
LO_OUT
BUFFEN
I.C.
GND
IF_SEL
IF1-
IF1+
I.C.
CMIX_IN
N.C./GND
G2
I.C.
MODE
BIAS
PLL
LO_IN
SHDN
MAX2354
MAX2351/4/8/9/MAX2530/1/7/8
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
______________________________________________________________________________________ 23
Pin Configurations (continued)
28
IF OUTPUT MUX
27 26
21
20
19
1
2
3
18
4
17
16
5
6
15
÷2
7
25 24 23 22
89 1011 12 13 14
G1
N.C./GND
GND
CLNA_IN
PLNA_IN
CLNA_OUT I.C.
I.C.
IFO-
IFO+
VCC
LO_OUT
BUFFEN
PLNA_OUT
BAND
IF_SEL
IF1-
IF1+
PMIX_IN
CMIX_IN
N.C./GND
G2
I.C.
MODE
BIAS
PLL
LO_IN
SHDN
MAX2358
MAX2351/4/8/9/MAX2530/1/7/8
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
24 ______________________________________________________________________________________
Pin Configurations (continued)
28
IF OUTPUT MUX
27 26
21
20
19
1
2
3
18
4
17
16
5
6
15
7
25 24 23 22
89 1011 12 13 14
G1
N.C./GND
GND
N.C./GND
PLNA_IN
N.C./GND I.C.
I.C.
IFO-
IFO+
VCC
LO_OUT
BUFFEN
PLNA_OUT
I.C.
IF_SEL
IF1-
IF1+
PMIX_IN
N.C./GND
N.C./GND
G2
I.C.
MODE
BIAS
PLL
LO_IN
SHDN
MAX2359
MAX2351/4/8/9/MAX2530/1/7/8
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
______________________________________________________________________________________ 25
28
IF OUTPUT MUX
27 26
21
20
19
1
2
3
18
4
17
16
5
6
15
7G1
25 24 23 22
89 1011 12 13 14
÷1.5
MAX2530
GLNA_IN
GND
CLNA_IN
PLNA_IN
CLNA_OUT GIF-
GIF+
IFO-
IFO+
VCC
LO_OUT
PLNA_OUT
BAND
IF_SEL
IF1-
IF1+
PMIX_IN
CMIX_IN
GLNA_OUT
G2
GMIX_IN
MODE
BIAS
PLL
LO_IN
SHDN
BUFFEN
Pin Configurations (continued)
MAX2351/4/8/9/MAX2530/1/7/8
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
26 ______________________________________________________________________________________
28
IF OUTPUT MUX
27 26
21
20
19
1
2
3
18
4
17
16
5
6
15
X2
7
25 24 23 22
89 1011 12 13 14
÷1.5
MAX2531
G1
GLNA_IN
GND
CLNA_IN
PLNA_IN
CLNA_OUT GIF-
GIF+
IFO-
IFO+
VCC
LO_OUT
BUFFEN
PLNA_OUT
BAND
IF_SEL
IF1-
IF1+
PMIX_IN
CMIX_IN
GLNA_OUT
G2
GMIX_IN
MODE
BIAS
PLL
LO_IN
SHDN
Pin Configurations (continued)
MAX2351/4/8/9/MAX2530/1/7/8
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
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.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 27
©2004 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
28
IF OUTPUT MUX
27 26
21
20
19
1
2
3
18
4
17
16
5
6
15
÷2
7
25 24 23 22
89 1011 12 13 14
÷1.5
MAX2537
G1
GLNA_IN
GND
CLNA_IN
N.C./GND
CLNA_OUT GIF-
GIF+
IFO-
IFO+
VCC
LO_OUT
BUFFEN
I.C.
BAND
IF_SEL
IF1-
IF1+
I.C.
CMIX_IN
GLNA_OUT
G2
GMIX_IN
MODE
BIAS
PLL
LO_IN
SHDN
Pin Configurations (continued)
Package Information
For the latest package outline information, go to
www.maxim-ic.com/packages.