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19-2487; Rev 3; 1/04
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
General Description
The MAX2351/MAX2354/MAX2358/MAX2359/MAX2530/ MAX2531/MAX2537/MAX2538 family of single- and multiband 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 minimizes desensitization in the presence of a large interfering signal. For the other gain states, the LNA current is reduced to improve standby time. Each band is implemented with a separate mixer to optimize performance for the specific band, and each mixer provides multiple linearity modes to optimize linearity and current consumption. 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.
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
Ordering Information
PART MAX2351ETI MAX2354ETI MAX2358ETI MAX2359ETI MAX2530ETI MAX2531ETI MAX2537ETI TEMP RANGE -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C PIN-PACKAGE 28 Thin QFN-EP* 28 Thin QFN-EP* 28 Thin QFN-EP* 28 Thin QFN-EP* 28 Thin QFN-EP* 28 Thin QFN-EP* 28 Thin QFN-EP* 28 Thin QFN-EP*
MAX2538ETI -40C to +85C *EP = exposed pad.
Applications
Triple-Band, Quadruple-Mode PCS/Cellular Handsets
PLNA_OUT
Pin Configurations
CMIX_IN PMIX_IN IF_SEL BAND IF1+ 22 IF123
Single-Band Handsets E911 and Traveler Assistance Through GPS GSM/TDMA Cellular Phones
CLNA_OUT
28
27
26
25
24
Selector Guide
PLNA_IN
1
21
GIF-
2
IF OUTPUT MUX
20
GIF+
PART MAX2351 MAX2354 MAX2358 MAX2359 MAX2530 MAX2531 MAX2537 MAX2538
CELL PCS GPS -- -- -- -- -- -- --
CELL VCO Input Input Internal divider -- Input Input Internal divider Internal divider
PCS VCO Internal doubler -- Input Input Input Internal doubler Input Input
G1 7 8 GLNA_OUT 9 G2 10 GMIX_IN 11 MODE /1.5 SHDN 5 GND 3
19
IFO-
CLNA_IN
4
MAX2538
18
IFO+
17
VCC
GLNA_IN
6
/2
16
LO_OUT
15 12 BIAS 13 PLL 14 LO_IN
BUFFEN
Pin Configurations continued at end of data sheet. ________________________________________________________________ Maxim Integrated Products 1
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.
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers MAX2351/4/8/9/MAX2530/1/7/8
ABSOLUTE MAXIMUM RATINGS
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 = +70C) 28-Pin QFN-EP (derate 21mW/C above +70C)...................................................................1.6W Operating Temperature Range ...........................-40C to +85C Junction Temperature ......................................................+150C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering 10s) ..................................+300C
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
(VCC = 2.7V to 3.3V, RBIAS = 20k, TA = -40C to +85C. Typical values are at VCC = 2.75V and TA = +25C, unless otherwise noted.) (Note 1)
PARAMETER PCS MODE (see Table 1 for abbreviations) ULG Operating Supply Current LG HGHL MAX2358/MAX2359/MAX2530/MAX2538 MAX2351/MAX2531 MAX2358/MAX2359/MAX2530/MAX2538 MAX2351/MAX2531 MAX2358/MAX2359/MAX2530/MAX2538 MAX2351/MAX2531 MAX2351/MAX2354/MAX2530/MAX2531 MAX2358/MAX2537/MAX2538 MAX2351/MAX2354/MAX2530/MAX2531 MAX2358/MAX2537/MAX2538 MAX2354/MAX2530 Operating Supply Current MG MAX2351/MAX2531 MAX2358/MAX2537/MAX2538 HGLL MAX2351/MAX2354/MAX2530/MAX2531 MAX2358/MAX2537/MAX2538 MAX2354/MAX2530 HGHL GPS MODE (MAX2530/MAX2531/MAX2538) Operating Supply Current SHUTDOWN MODE Shutdown Supply Current ALL MODES Digital Input Logic High Digital Input Logic Low 1.8 0.6 V V SHDN = low, BUFFEN = PLL = low 20 A PLL = low MAX2530/MAX2537/MAX2538 MAX2531 18.9 19.6 23 24 mA MAX2351/MAX2531 MAX2358/MAX2537/MAX2538 7.4 8.1 8.6 9.3 26.5 27.2 6.5 7.7 13.9 15.1 23.5 21.5 24.7 20.6 21.8 27.7 25.7 28.9 9.0 10 11 11.5 32 33 8.5 9.5 17 18.5 28 26 29.5 26 27.5 35 33.5 36 mA mA CONDITIONS MIN TYP MAX UNITS
CELLULAR MODE (see Table 1 for abbreviations) ULG LG
2
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Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
DC ELECTRICAL CHARACTERISTICS (continued)
(VCC = 2.7V to 3.3V, RBIAS = 20k, TA = -40C to +85C. Typical values are at VCC = 2.75V and TA = +25C, unless otherwise noted.) (Note 1)
PARAMETER Digital Input Current Additional Current for LO_OUT Buffer Buffer-Only Mode Supply Mode CONDITIONS Measured at guaranteed logic threshold BUFFEN = high, cellular and PCS modes, PLO = -7dBm MIN -10 2.4 5.4 6.1 4.7 5.9 3.2 TYP MAX +10 3.5 7 7.5 6.5 7.5 4.5 mA mA UNITS A mA
MAX2351/4/8/9/MAX2530/1/7/8
PCS MAX2358/MAX2359/MAX2530/MAX2538 SHDN = low, PCS MAX2351/MAX2531 BUFFEN = high, CELL MAX2351/MAX2354/MAX2530/MAX2531 PLO = -7dBm CELL MAX2358/MAX2537/MAX2538 SHDN = low, PLL = high, PLO = -7dBm
PLL-Only Mode
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, 50 system impedance, VCC = 2.7V to 3.3V, RBIAS = 20k, RIF0 = RIF1 = 3.3k, RGIF = 8.2k, LO input power = -10dBm, TA = -40C to +85C. Typical values are at fCELL = 881MHz, fPCS = 1960MHz, VCC = 2.75V, LO input power = 7dBm, unless otherwise noted.) (Note 2)
PARAMETER OVERALL PERFORMANCE IF Frequency Range GPS IF Frequency Range Cellular RF Frequency Range PCS RF Frequency Range LO Leakage to LNA inputs Cell, BUFFEN = high, 50 load, LO input power = -10dBm (Note 1) LO Output Power PCS, BUFFEN = high, 50 load, LO input power = -10dBm (Note 1) PLL Output Power LNA PERFORMANCE (see Table 1 for abbreviations) HGHL HGLL LNA Gain (Note 1) CELL MG LG/ULG TA = +25C TA = -40C to +85C TA = +25C TA = -40C to +85C TA = +25C TA = -40C to +85C TA = +25C TA = -40C to +85C 13.8 13.3 13.5 13.0 1.0 0.5 -6 -6.5 -4.9 1.9 14.5 15 16.0 16.5 15.5 16.0 3.0 3.0 -4 -3.5 dB -11 -12 -7 dBm -10 -5 dBm IF0 and IF1 (Note 3) GIF (Note 3) (Note 1) (Note 1) 70 110 869 1930 183.6 183.6 400 225 894 1990 -40 MHz MHz MHz MHz dBm CONDITIONS MIN TYP MAX UNITS
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3
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers MAX2351/4/8/9/MAX2530/1/7/8
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, 50 system impedance, VCC = 2.7V to 3.3V, RBIAS = 20k, RIF0 = RIF1 = 3.3k, RGIF = 8.2k, LO input power = -10dBm, TA = -40C to +85C. Typical values are at fCELL = 881MHz, fPCS = 1960MHz, VCC = 2.75V, LO input power = 7dBm, unless otherwise noted.) (Note 2)
PARAMETER HGHL PCS LNA Gain (Note 1) GPS HGHL/ HGLL CELL MG LG/ULG LNA Noise Figure PCS HGHL LG/ULG GPS LG/ULG CONDITIONS TA = +25C TA = -40C to +85C TA = +25C TA = -40C to +85C TA = +25C TA = -40C to +85C TA = +25C Change over temperature from TA = +25C to +85C TA = +25C TA = +25C TA = +25C Change over temperature from TA = +25C to +85C TA = +25C TA = +25C Change over temperature from TA = +25C to +85C HGHL CELL LNA IP3 (Note 4) PCS GPS HGLL MG LG/ULG HGHL LG/ULG PIN = -25dBm, TA = -40C to +85C (Note 1) PIN = -25dBm, TA = -40C to +85C PIN = -25dBm, TA = -40C to +85C PIN = -15dBm, TA = -40C to +85C PIN = -25dBm, TA = -40C to +85C (Note 1) PIN = -15dBm, TA = -40C to +85C PIN = -25dBm, TA = -40C to +85C 9.5 6.5 13.5 20 8 20 0 MIN 15 14.5 -5.5 -6 16 15.5 0.9 0.2 2.0 5.0 1.2 0.2 5.5 1.0 0.2 13 12.2 17 24.6 12 24.4 4.6 dBm 7.0 1.3 2.5 6.5 1.5 dB -4.5 -4.5 17.7 TYP 16 MAX 17 17.5 -3.2 -3.2 19 20 1.2 dB UNITS
4
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Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
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, 50 system impedance, VCC = 2.7V to 3.3V, RBIAS = 20k, RIF0 = RIF1 = 3.3k, RGIF = 8.2k, LO input power = -10dBm, TA = -40C to +85C. Typical values are at fCELL = 881MHz, fPCS = 1960MHz, VCC = 2.75V, LO input power = 7dBm, unless otherwise noted.) (Note 2)
PARAMETER HGHL/ MG CELL HGLL/ LG ULG Mixer Gain (Note 1) PCS HGHL LG ULG GPS HGHL/ MG CELL HGLL/ LG ULG Mixer Noise Figure PCS LG ULG GPS HGHL CONDITIONS TA = +25C TA = -40C to +85C TA = +25C TA = -40C to +85C TA = +25C TA = -40C to +85C TA = +25C TA = -40C to +85C TA = +25C TA = -40C to +85C TA = +25C TA = -40C to +85C TA = +25C TA = -40C to +85C TA = +25C Change over temperature from TA = +25C to +85C TA = +25C TA = +25C TA = +25C Change over temperature from TA = +25C to +85C TA = +25C TA = +25C TA = +25C Change over temperature from TA = +25C to +85C MIN 9.5 8.5 9.0 8 6 5 10.0 8.5 8.0 6.5 7.5 6.0 12.0 10 TYP 12.5 12 10 13 12 12 11 15 13 8 0.3 7.2 7 7 0.3 6.2 6 7.2 0.5 7.5 7.5 9 9 9 8.5 MAX 15.0 16 14.5 15.5 12.5 14 16.5 16.5 14.5 14.5 13.5 14.5 17.5 19 9.5 UNITS
MAX2351/4/8/9/MAX2530/1/7/8
MIXER PERFORMANCE (see Tables 1 and 2 for abbreviations)
dB
dB
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5
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers MAX2351/4/8/9/MAX2530/1/7/8
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, 50 system impedance, VCC = 2.7V to 3.3V, RBIAS = 20k, RIF0 = RIF1 = 3.3k, RGIF = 8.2k, LO input power = -10dBm, TA = -40C to +85C. Typical values are at fCELL = 881MHz, fPCS = 1960MHz, VCC = 2.75V, LO input power = 7dBm, unless otherwise noted.) (Note 2)
PARAMETER HGHL/ MG CELL HGLL/ LG ULG HGHL PCS LG ULG GPS CONDITIONS MAX2354/MAX2358/MAX2530/ MAX2537/MAX2538, PIN = -20dBm (Note 1) MAX2351/MAX2531, PIN = -20dBm PIN = -20dBm PIN = -20dBm MAX2358/MAX2359/ PIN = -20dBm MAX2530/MAX2538 (Note 1) MAX2351/MAX2531 PIN = -20dBm PIN = -20dBm PIN = -20dBm MIN 6 4 3.5 -4.5 3 2.5 -4.5 -7 -3 TYP 7.8 6.5 6.5 -2.2 5 4.5 -1.8 -3.6 0.5 dBm MAX UNITS
Mixer IP3 (Note 4)
Note 1: Note 2: Note 3: Note 4:
Guaranteed at TA = +25C and TA = +85C by production test, and guaranteed by design and characterization at TA = -40C. Minimum and maximum specs are guaranteed by design and characterization, unless otherwise noted. Operating over this frequency range requires the ports to be rematched for the desired operating frequency. Two-tone separation is 900kHz cellular, 1.25MHz for PCS, and 1MHz for GPS.
Typical Operating Characteristics
(MAX2538 EV kit, fIF = 183.6MHz, high-side LO for all modes except GPS, 50 system impedance, RBIAS = 20k, RIF0 = RIF1 = 3.3k, RGIF = 8.2k, fCELL = 881MHz, fPCS = 1960MHz, fGPS = 1575.42MHz, VCC = 2.75V, LO input power = -7dBm, HGHL mode, TA = +25C, unless otherwise noted.)
SUPPLY CURRENT vs. TEMPERATURE
MAX2351 toc01
SUPPLY CURRENT vs. BIAS RESISTANCE
MAX2351 toc02
MIXER NOISE FIGURE vs. LO POWER
MAX2351 toc03
32 CELL 30 SUPPLY CURRENT (mA) 28 26 24 22 20 18 16 -40 -15 10 35 60 GPS PCS 2.75V, 3.0V, 3.3V
50
14 PCS LOW-SIDE LO
30
MIXER NOISE FIGURE (dB)
40 SUPPLY CURRENT (mA)
12
CELL PCS
10 CELL 8
20 GPS 10
6
GPS PCS
0 85 0 10 20 30 40 50 TEMPERATURE (C) BIAS RESISTANCE (k)
4 -10 -8 -6 -4 -2 0 LO POWER (dBm)
6
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Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Typical Operating Characteristics (continued)
(MAX2538 EV kit, fIF = 183.6MHz, high-side LO for all modes except GPS, 50 system impedance, RBIAS = 20k, RIF0 = RIF1 = 3.3k, RGIF = 8.2k, fCELL = 881MHz, fPCS = 1960MHz, fGPS = 1575.42MHz, VCC = 2.75V, LO input power = -7dBm, HGHL mode, TA = +25C, unless otherwise noted.)
MIXER GAIN vs. LO POWER
GPS
MAX2351 toc04
MAX2351/4/8/9/MAX2530/1/7/8
MIXER IIP3 vs. LO POWER
CELL 8 PCS MIXER IIP3 (dBm) MIXER GAIN (dB) 6 4 2 GPS 0 4 PCS LOW-SIDE LO 12
MAX2351 toc05
MIXER GAIN vs. SUPPLY CURRENT
GPS 16 PCS
MAX2351 toc06
16
10
20
14 MIXER GAIN (dB) PCS LOW-SIDE LO
12 PCS 10 CELL
CELL 8
8 -10 -8 -6 -4 -2 0 LO INPUT POWER (dBm)
-2 -10 -8 -6 -4 -2 0 LO POWER INPUT (dBm)
0 10 15 20 25 30 35 40 SUPPLY CURRENT (mA)
MIXER IIP3 vs. SUPPLY CURRENT
MAX2351 toc07
LNA NOISE FIGURE vs. SUPPLY CURRENT
MAX2351 toc08
LNA GAIN vs. SUPPLY CURRENT
GPS 18 16 PCS 14 CELL 12
MAX2351 toc09
18 14 CELL MIXER IIP3 (dBm) 10 6 2 -2 -6 -10 10 15 20 25 30 35 GPS PCS
1.6
20
1.4 LNA NOISE FIGURE (dB) PCS 1.2 GPS 1.0
0.8 CELL 0.6 40 10 15 20 25 30 35 40 SUPPLY CURRENT (mA) SUPPLY CURRENT (mA)
LNA GAIN (dB)
10 8 10 15 20 25 30 35 40 SUPPLY CURRENT (mA)
LNA IIP3 vs. SUPPLY CURRENT
MAX2351 toc10
20 15 10 5 PCS 0 GPS -5 -10 10 15 20 25 30 35 CELL
LNA IIP3 (dB)
40
SUPPLY CURRENT (mA)
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7
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers MAX2351/4/8/9/MAX2530/1/7/8
Pin Description
PIN MAX2530 MAX2351 MAX2354 MAX2359 MAX2531 MAX2537 MAX2358 MAX2538 1 2 3 4 1 -- 3, 27 4 -- 2 3 -- 1 2 3 4 1 -- 3 4 NAME FUNCTION
CLNA_OUT PLNA_IN GND CLNA_IN
Cellular LNA Output. Internally matched to 50 including an on-chip DC-blocking capacitor. PCS LNA Input. Requires a DC-blocking capacitor that can be used as part of the matching network. Ground Cellular LNA Input. Requires a DC-blocking capacitor that can be used as part of the matching network. 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. Pin can be grounded or left open-circuit. GPS LNA Input. Requires a DC-blocking capacitor, which can be used as part of the matching network. Operating Mode Logic Input. Sets device operating modes. See Table 2 for details. GPS LNA Output. Internally matched to 50 including an onchip DC-blocking capacitor. Operating Mode Logic Input. Sets device operating modes. See Table 2 for details. Internally Connected. Do not make connections to this pin. GPS Mixer Input. Requires a DC-blocking capacitor, which can be used as an interstage coupling capacitor. Operating Mode Logic Input. Sets device operating modes. See Table 2 for details. Bias Setting Pin. For nominal bias, connect a 20k resistor to ground. Adjust RBIAS to alter the linearity of the mixers and LNAs. Dual-Function Pin. LO buffer output port for driving an external PLL synthesizer. A logic high (through a 10k resistor) enables the PLL buffer. A logic low disables the PLL buffer. Leave open if not used. If open, PLL is low. LO Input. Internally matched to 50, including DC-blocking capacitor. LO Buffer Enable Logic Input. A logic high enables the external LO buffer port. Floats low.
5
5
5 1, 4, 6, 8, 24 -- 7 -- 9 10, 20, 21, 27 -- 11
5
5
SHDN
6, 8 -- 7 -- 9 10, 20, 21 -- 11
2, 6, 8 -- 7 -- 9 10, 20, 21, 25, 28 -- 11
-- 6 7 8 9 -- 10 11
2 6 7 8 9 25, 28 10 11
N.C./GND GLNA_IN G1 GLNA_OUT G2 I.C. GMIX_IN MODE
12
12
12
12
12
BIAS
13
13
13
13
13
PLL
14 15
14 15
14 15
14 15
14 15
LO_IN BUFFEN
8
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Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Pin Description (continued)
PIN MAX2530 MAX2351 MAX2354 MAX2359 MAX2531 MAX2537 MAX2358 MAX2538 NAME FUNCTION
MAX2351/4/8/9/MAX2530/1/7/8
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. 2.7V to 3.3V Supply Pin. Connect a 100pF bypass capacitor as close as possible to the pin. 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.
17
17
17
17
17
VCC
18, 19
18, 19
18, 19
18, 19
18, 19
IF0+, IF0-
--
--
--
20, 21
20, 21
GPS IF Output. Requires a pullup inductor and a DC-blocking GIF+, GIF- capacitor at each pin, which can be used as part of the matching network. If not used, connect pins to VCC. IF1+, IF1Differential 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. Cellular Mixer Input. Internally matched to 50, including an on-chip DC-blocking capacitor. PCS Mixer Input. Internally matched to 50. Requires a DCblocking capacitor. IF Select Logic Input. Logic low selects IF0 port, and logic high selects IF1 port. BAND Logic Input. See Table 2 for details.
22, 23
22, 23
22, 23
22, 23
22, 23
24 25 26 27 28 EP
24 -- 26 -- -- EP
-- 25 26 -- 28 EP
24 25 26 27 28 EP
24 -- 26 27 -- EP
CMIX_IN PMIX_IN IF_SEL BAND
PCS LNA Output. Requires a pullup inductor and a DCPLNA_OUT blocking capacitor, which can be used as part of the matching network. Exposed Exposed Pad. RF and DC ground.
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 operation using a 4-gain-mode LNA and a 3-gain-mode mixer. Similarly, the PCS signal path has four modes of operation 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 summarize 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
9
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Quadruple-Mode PCS/Cellular/GPS LNA/Mixers MAX2351/4/8/9/MAX2530/1/7/8
LNA linearity is required for cross-modulation suppression. 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 interference condition.
Applications Information
Cascaded LNA/Mixer Performance
The LNA and mixer design optimizes cascaded performance in all gain and linearity modes. In high-gain/highlinearity 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-modulation 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.
Downconverters
The downconverters in these devices are doublebalanced 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 signal 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 component count.
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 Sparameters for each LNA. Tables 13, 14, 15 show LNA noise parameters.
LO Generation
Table 3 shows the options for the LO generation. The on-chip LO divider or multiplier allows triple-band operation 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 DCblocking capacitor is not required.
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 inductively pulled up to VCC. The inductive pullup may be used as part of the matching network. Because the differential IF output port is high impedance, a load resistor is typically used to ease the matching and establish the gain. A 3.3k resistor is recommended for IF0 and IF1, and 8.2k for the GIF port. The equivalent parallel RC impedance of the IF ports is typically 12.2k in parallel with 0.75pF. Tables 10, 11, 12 show S-parameters for the mixer input points.
Table 1. Abbreviation for LNA and Mixer Modes
ABBREVIATION HGHL HGLL MG LG ULG HL LL MODE High gain/high linearity High gain/low linearity Midgain Low gain Ultra-low gain High linearity Low linearity
Bias Control
The bias control input (BIAS pin) controls the IC bias current. Typically, connect a 20k resistor to ground for normal operation. Smaller bias resistor values increase the supply current and linearity.
10
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Quadruple-Mode PCS/Cellular/GPS LNA/Mixers MAX2351/4/8/9/MAX2530/1/7/8
Table 2. Modes of Operation
BAND OPERATION MODE HGHL HGLL Cellular MG LG ULG HGHL PCS GPS* LG ULG GPS LNA HGHL HGLL MG LG LG HGHL LG LG GPS MIXER HL LL HL LL LG HL LL LG GPS IF PORT IF0 or IF1 IF0 or IF1 IF0 or IF1 IF0 or IF1 IF0 or IF1 IF0 or IF1 IF0 or IF1 IF0 or IF1 GIF G2 0 0 0 1 1 0 1 1 0 G1 0 0 1 1 0 0 1 0 0 MODE 1 0 X X X 1 X X 0 BAND 0 0 0 0 0 1 1 1 1
*MAX2530/MAX2531/MAX2537/MAX2538 only. X = Don't care.
Table 3. LO Frequency Plan
PART MAX2351 MAX2354 MAX2358 MAX2359 MAX2530 MAX2531 MAX2537 MAX2538 VCO FREQUENCY Cell Band VCO Cell Band VCO PCS Band VCO PCS Band VCO Cell and PCS Dual-Band VCO Cell Band VCO PCS Band VCO PCS Band VCO CELLULAR LO FREQUENCY fVCO fVCO 0.5 x fVCO -- fVCO fVCO 0.5 x fVCO 0.5 x fVCO PCS LO FREQUENCY 2 x fVCO -- fVCO fVCO fVCO 2 x fVCO -- fVCO GPS LO FREQUENCY -- -- -- -- (2/3) fVCO (4/3) fVCO (2/3) fVCO (2/3) fVCO
GPS Interstage
The GPS LNA and mixer include on-chip resonant tanks that can be used instead of a saw filter for image suppression. 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 abundant ground vias between RF traces to minimize undesired coupling.
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Quadruple-Mode PCS/Cellular/GPS LNA/Mixers MAX2351/4/8/9/MAX2530/1/7/8
Table 4. Typical Cascade Performance of Cellular-Band Receiver with 2.5dB Interstage Loss (RBIAS = 20k)
PARAMETER Conversion Gain (dB) Noise Figure (dB) Input IP3 (dBm) Supply Current (mA) (MAX2351/MAX2354/MAX2530/MAX2531) Supply Current (mA) (MAX2358/MAX2537/MAX2538) HGHL 25.00 1.91 -5.14 27.70 28.90 HGLL 24.00 1.79 -6.21 20.60 21.80 MG 12.00 9.10 7.75 23.50 24.70 LG 4.50 14.50 13.59 13.90 15.10 ULG 2.50 14.50 5.44 6.50 7.70
Table 5. Typical Cascade Performance of PCS-Band Receiver with 2.5dB Interstage Loss (RBIAS = 20k)
PARAMETER Conversion Gain (dB) Noise Figure (dB) Input IP3 (dBm) Supply Current (mA) (MAX2358/MAX2359/ MAX2530/MAX2538) Supply Current (mA) (MAX2351/MAX2531) HGHL 26.00 1.72 -8.54 26.50 27.20 LG 4.50 13.16 +5.44 8.60 9.30 ULG 4.00 13.16 +3.46 7.40 8.10
Table 6. Typical Cascade Performance of GPS Band (RBIAS = 20k)
PARAMETER Conversion Gain (dB) Noise Figure (dB) Input IP3 (dBm) Supply Current (mA) (MAX2530/MAX2537/ MAX2538) Supply Current (mA) (MAX2531) Image Suppression (dB) WITH 2.5dB INTERSTAGE SAW LOSS 30.50 1.32 -15.05 18.90 WITH LC INTERSTAGE MATCH 29.09 1.99 -14.35 18.90
19.60 25
19.60 15
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Table 7. S-Parameters for Cellular LNA in HGHL Mode
S11 FREQUENCY (Hz) 100M 200M 300M 400M 500M 600M 700M 800M 810M 820M 830M 840M 850M 860M 870M 880M 890M 900M 1G 1.25G 1.5G 1.75G 2G 2.25G 2.5G 2.75G 3G 3.25G 3.5G 3.75G 4G MAG 835m 779.9m 748.7m 729.4m 709.9m 687.1m 640.3m 557.8m 547.6m 537.1m 526.3m 515.2m 503.9m 492.5m 480.8m 469.1m 457.2m 445.3m 330.5m 207.7m 283.4m 382.4m 492m 629.8m 762.5m 703.3m 490m 335.7m 258.5m 212.7m 189.9m PHASE (DEG) -15.10 -25.60 -35.09 -44.95 -55.94 -68.06 -81.90 -96.31 -97.70 -99.06 -100.4 -101.70 -103.00 -104.20 -105.40 -106.50 -107.60 -108.60 -115.10 -94.89 -86.74 -99.91 -120.90 -149.50 -190.70 -242.40 -287.30 -321.00 -352.10 -22.90 -51.60 MAG 554.2m 874.9m 1.301 1.883 2.599 3.396 4.244 4.959 5.341 5.358 5.37 5.379 5.385 5.386 5.385 5.38 5.372 5.362 5.348 4.556 3.71 3.071 2.536 1.933 989.2m 549.2m 1.273 1.579 1.697 1.723 1.729 S21 PHASE (DEG) -115.6 -120.1 -121.0 -127.0 -137.2 -150.1 -166.0 -184.3 -203.5 -205.4 -207.3 -209.1 -211.0 -212.8 -214.6 -216.4 -218.1 -219.9 -221.6 -256.9 -281.6 -301.6 -320.9 -342.4 -364.5 -289.0 -295.0 -312.0 -326.7 -338.6 -348.9 MAG 736.4 1.099m 1.65m 5.01m 11.55m 22.25m 37.71m 56.79m 76.06m 77.86m 79.62m 81.34m 83.03m 84.68m 86.29m 87.85m 89.38m 90.86m 92.3m 116m 129.9m 135.2m 132.1m 110m 49.89m 128.9m 198.4m 238m 264.9m 284m 298.7m S12 PHASE (DEG) 121.10 119.60 175.20 197.80 195.50 188.20 175.90 160.40 158.70 157.10 155.40 153.70 152.10 150.40 148.70 147.10 145.40 143.70 128.00 97.48 76.60 60.00 44.58 29.61 50.28 89.36 69.98 55.30 43.14 32.81 23.80 MAG 995.1m 986.1m 971.9m 949.1m 909.9m 845m 735.4m 570.6m 365.8m 344.5m 323.3m 302.2m 281.1m 260.2m 239.5m 218.9m 198.6m 178.6m 158.9m 216.9m 412.3m 529.5m 628.6m 739.7m 853.3m 833.5m 707.4m 626.1m 575.5m 549.8m 536.3m S22 PHASE (DEG) -8.043 -16.150 -24.720 -34.160 -44.900 -57.540 -72.430 -89.160 -106.200 -107.800 -109.500 -111.100 -112.600 -114.200 -115.700 -117.200 -118.700 -120.100 -121.500 27.620 9.951 -2.140 -12.040 -22.720 -38.460 -58.420 -70.290 -75.550 -78.930 -81.490 -84.470
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Quadruple-Mode PCS/Cellular/GPS LNA/Mixers MAX2351/4/8/9/MAX2530/1/7/8
Table 8. S-Parameters for PCS LNA in HGHL Mode
S11 FREQUENCY (Hz) 100M 200M 300M 400M 500M 600M 700M 800M 900M 1G 1.1G 1.2G 1.3G 1.4G 1.5G 1.6G 1.7G 1.8G 1.9G 1.91G 1.92G 1.93G 1.94G 1.95G 1.96G 1.97G 1.98G 1.99G 2G 2.1G 2.2G 2.3G 2.4G 2.5G 2.6G 2.7G 2.8G 2.9G 3G MAG 826.3m 730m 623.7m 530.6m 508.6m 419.8m 379.3m 351.2m 329.5m 310.7m 293.7m 280.4m 271.9m 267.7m 266.6m 267.8m 270.5m 274.6m 280.4m 281.1m 281.8m 282.5m 283.2m 284m 284.8m 285.6m 286.4m 287.2m 288m 297.2m 307.7m 319.5m 332.6m 346.9m 362.5m 379.7m 398.1m 415.5m 428.9m PHASE (DEG) -18.04 -33.35 -44.60 -52.40 -55.46 -62.24 -65.01 -67.46 -69.90 -72.33 -74.30 -75.57 -76.33 -76.88 -77.55 -78.48 -79.62 -80.87 -82.23 -82.38 -82.53 -82.68 -82.82 -82.98 -83.13 -83.29 -83.45 -83.61 -83.77 -85.53 -87.49 -89.65 -92.00 -94.53 -97.25 -100.20 -103.60 -107.70 -112.50 MAG 28.510 25.050 21.350 18.100 14.650 13.410 11.750 10.450 9.419 8.565 7.822 7.158 6.573 6.065 5.622 5.233 4.887 4.576 4.296 4.270 4.244 4.218 4.192 4.167 4.142 4.117 4.093 4.069 4.045 3.818 3.614 3.429 3.264 3.116 2.984 2.870 2.775 2.697 2.622 S21 PHASE (DEG) 163.100 141.400 125.200 112.300 106.400 94.840 87.380 80.970 75.050 69.280 63.670 58.350 53.390 48.740 44.290 40.010 35.860 31.840 27.970 27.600 27.220 26.840 26.470 26.090 25.720 25.350 24.980 24.610 24.250 20.650 17.180 13.830 10.590 7.455 4.420 1.4740 -1.475 -4.627 -8.150 MAG 8.437m 15.81m 21.38m 25.89m 25.66m 32.75m 36.18m 39.47m 42.7m 45.59m 48.5m 51.34m 54.13m 56.8m 59.33m 61.75m 64.01m 66.01m 67.69m 67.84m 67.99m 68.14m 68.28m 68.43m 68.57m 68.71m 68.85m 68.99m 69.12m 70.37m 71.48m 72.5m 73.47m 74.47m 75.59m 76.93m 78.78m 81.42m 84.47m S12 PHASE (DEG) 86.50 72.78 64.46 58.80 58.70 54.65 52.16 50.17 48.26 46.42 44.57 42.79 40.96 39.06 37.14 35.20 33.18 31.12 29.12 28.93 28.74 28.55 28.36 28.18 27.99 27.81 27.63 27.45 27.27 25.57 24.03 22.66 21.46 20.45 19.61 18.96 18.45 17.73 16.44 MAG 947.8m 870.8m 795.4m 740.8m 583.3m 657.3m 647.1m 642.7m 643.4m 647.5m 652.1m 657.4m 663.8m 672.2m 682.5m 693.8m 705.1m 715.9m 726.3m 727.3m 728.4m 729.4m 730.4m 731.5m 732.5m 733.5m 734.5m 735.6m 736.6m 747m 757.6m 768.5m 779.7m 791.3m 803.2m 815.5m 828.4m 840.5m 849.8m S22 PHASE (DEG) -7.457 -25.890 -38.050 -47.460 -53.250 -58.520 -64.100 -68.980 -73.540 -77.870 -81.950 -85.690 -89.130 -92.320 -95.320 -98.200 -101.000 -103.600 -106.100 -106.300 -106.600 -106.800 -107.000 -107.300 -107.500 -107.700 -108.000 -108.200 -108.400 -110.600 -112.700 -114.600 -116.600 -118.400 -120.300 -122.100 -124.000 -126.000 -127.900
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Quadruple-Mode PCS/Cellular/GPS LNA/Mixers MAX2351/4/8/9/MAX2530/1/7/8
Table 9. S-Parameters for GPS LNA
S11 FREQUENCY (Hz) 100M 200M 300M 400M 500M 600M 700M 800M 900M 1G 1.1G 1.2G 1.3G 1.4G 1.5G 1.51G 1.52G 1.53G 1.54G 1.55G 1.56G 1.57G 1.58G 1.59G 1.6G 1.7G 1.8G 1.9G 2G 2.1G 2.2G 2.3G 2.4G 2.5G 2.6G 2.7G 2.8G 2.9G 3G MAG 897m 878.4m 859m 839.1m 818.7m 802.3m 787.6m 772m 751.1m 718.6m 666.6m 593.1m 506.2m 419.5m 344m 337.2m 330.7m 324.3m 318m 311.9m 306m 300.2m 294.6m 289.2m 283.9m 239.4m 208m 186m 170.2m 158.8m 150.9m 145.5m 142.1m 139.8m 138.3m 137m 133.5m 128.4m 139.9m PHASE (DEG) -8.953 -17.210 -25.060 -32.680 -40.390 -47.710 -55.560 -64.070 -73.420 -83.770 -94.890 -105.900 -115.600 -123.100 -127.900 -128.200 -128.500 -128.800 -129.000 -129.300 -129.500 -129.600 -129.800 -129.900 -130.000 -130.000 -128.700 -126.900 -124.800 -122.800 -120.900 -119.300 -118.200 -117.500 -117.200 -117.400 -117.700 -114.600 -109.200 MAG 391.4m 640.8m 892.3m 1.231 1.691 2.249 2.97 3.867 4.916 6.029 7.037 7.742 8.033 7.955 7.64 7.601 7.561 7.52 7.479 7.437 7.394 7.351 7.307 7.263 7.219 6.777 6.359 5.979 5.637 5.328 5.05 4.802 4.58 4.382 4.204 4.044 3.895 3.727 3.557 S21 PHASE (DEG) -106.5 -109.6 -106.4 -104.0 -104.3 -107.0 -111.9 -119.2 -129.2 -141.6 -155.9 -171.2 -186.2 -199.9 -211.7 -212.8 -213.9 -214.9 -216.0 -217.0 -218.0 -219.0 -219.9 -220.9 -221.8 -230.4 -237.7 -244.1 -249.9 -255.0 -259.7 -264.0 -268.0 -271.7 -275.2 -278.5 -281.8 -285.1 -287.2 MAG 279.4 645.4 883.4 1.579m 3.26m 5.893m 10m 15.78m 23.39m 32.81m 43.28m 53.35m 61.65m 67.69m 71.78m 72.11m 72.43m 72.73m 73.03m 73.32m 73.59m 73.86m 74.12m 74.38m 74.62m 76.78m 78.68m 80.58m 82.6m 84.75m 86.99m 89.28m 91.57m 93.8m 95.98m 98.11m 100.1m 102.5m 106m S12 PHASE (DEG) 142.10 131.50 150.50 178.90 191.20 194.80 192.70 187.20 179.40 169.50 157.90 145.40 133.30 122.40 113.30 112.50 111.70 110.90 110.10 109.30 108.60 107.90 107.20 106.50 105.80 99.70 94.75 90.66 87.15 84.05 81.26 78.68 76.29 74.07 72.04 70.19 68.60 67.51 66.24 MAG 996.2m 989.8m 980.7m 968.7m 953.2m 933.8m 907.6m 869.1m 810.1m 720.9m 596.2m 444.7m 293.1m 186.2m 177.6m 181.8m 186.6m 191.8m 197.4m 203.3m 209.5m 215.8m 222.3m 228.9m 235.5m 300.4m 356.2m 401.9m 439.3m 469.6m 494.3m 514.2m 530m 542.2m 551.3m 558m 562.3m 567m 574.8m S22 PHASE (DEG) -6.446 -12.850 -19.390 -26.200 -33.480 -41.400 -50.410 -60.940 -73.480 -88.550 -106.500 -128.200 -156.200 -199.700 -255.300 -260.000 -264.400 -268.500 -272.400 -276.000 -279.500 -282.700 -285.700 -288.500 -291.100 -311.100 -324.000 -333.500 -341.000 -347.300 -352.800 -357.600 -2.000 -6.000 -9.700 -13.100 -16.100 -18.600 -21.200
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Quadruple-Mode PCS/Cellular/GPS LNA/Mixers MAX2351/4/8/9/MAX2530/1/7/8
Table 9. S-Parameters for GPS LNA (continued)
FREQUENCY (Hz) 3.1G 3.2G 3.3G 3.4G 3.5G 3.6G 3.7G 3.8G 3.9G 4G S11 MAG 162.7m 182.9m 193.1m 187.8m 173.9m 161.5m 153.7m 150m 149.2m 150.3m PHASE (DEG) -110.6 -117.0 -126.3 -135.5 -141.5 -144.5 -145.6 -146.3 -146.9 -147.8 MAG 3.458 3.422 3.422 3.405 3.340 3.251 3.161 3.080 3.008 2.945 S21 PHASE (DEG) -288.7 -290.4 -293.0 -296.5 -300.1 -303.4 -306.2 -308.8 -311.2 -313.5 MAG 109.3m 111.8m 113.9m 116.3m 119.1m 122.2m 125.5m 128.9m 132.4m 136.2m S12 PHASE (DEG) 64.45 62.71 61.32 60.27 59.34 58.40 57.45 56.54 55.68 54.86 MAG 579.9m 581.1m 580.5m 580.1m 580.8m 581.9m 582.9m 584m 585.3m 587m S22 PHASE (DEG) -24.1 -26.8 -29.2 -31.4 -33.4 -35.3 -37.3 -39.1 -41.0 -42.7
Table 10. S-Parameters for Cellular Mixer in High-Linearity Mode
FREQUENCY (Hz) 100M 200M 300M 400M 500M 600M 700M 800M 810M 820M 830M 840M 850M 860M 870M S11 MAG 997.8m 993.1m 984.5m 968.2m 941.8m 879m 739.9m 475.4m 444.8m 414.7m 385.9m 359.1m 335.2m 314.9m 299.3m PHASE (DEG) -6.397 -13.080 -20.480 -29.270 -40.340 -56.150 -80.690 -123.700 -129.900 -136.700 -144.100 -152.300 -161.200 -170.900 -181.400 FREQUENCY (MHz) 880M 890M 900M 1G 1.25G 1.5G 1.75G 2G 2.25G 2.5G 2.75G 3G 3.25G 3.5G 3.75G 4G S11 MAG 289m 284.4m 285.5m 451.9m 734.2m 815.1m 846.4m 860.2m 864.6m 862m 850.6m 846.6m 857.1m 860.5m 857.2m 849.3m PHASE (DEG) -192.4 -203.5 -214.6 -286.0 -337.2 -356.3 -8.0 -16.9 -16.9 -16.9 -16.9 -16.9 -16.9 -16.9 -16.9 -16.9
16
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Quadruple-Mode PCS/Cellular/GPS LNA/Mixers MAX2351/4/8/9/MAX2530/1/7/8
Table 11. S-Parameters for PCS Mixer in High Linearity Mode
FREQUENCY (Hz) 100M 200M 300M 400M 500M 600M 700M 800M 900M 1G 1.1G 1.2G 1.3G 1.4G 1.5G 1.6G 1.7G 1.8G 1.9G 1.91G 1.92G 1.93G 1.94G 1.95G S11 MAG 949.1m 942.3m 933.3m 922.8m 904.9m 895.6m 881.2m 863.9m 845.8m 826.6m 804m 776.7m 742.2m 696.8m 635.2m 554.4m 454.4m 335.7m 207.5m 195.6m 184.3m 173.7m 164.1m 155.7m PHASE (DEG) -3.234 -6.090 -8.977 -11.780 -14.700 -17.390 -20.300 -23.310 -26.410 -29.830 -33.700 -38.130 -43.330 -49.580 -57.090 -66.040 -77.180 -92.710 -120.400 -124.700 -129.500 -134.800 -140.700 -147.200 FREQUENCY (Hz) 1.96G 1.97G 1.98G 1.99G 2G 2.1G 2.2G 2.3G 2.4G 2.5G 2.6G 2.7G 2.8G 2.9G 3G 3.1G 3.2G 3.3G 3.4G 3.5G 3.6G 3.7G 3.8G 3.9G 4G S11 MAG 148.7m 143.5m 140.2m 139.2m 140.4m 244.9m 402.9m 551.8m 675.8m 773.9m 851.9m 911.7m 948.5m 964m 964.3m 956.1m 944.9m 934.5m 928m 926.9m 929.9m 934.9m 939.9m 944.2m 947.8m PHASE (DEG) -154.3 -162.0 -170.2 -178.6 -187.2 -246.7 -273.1 -290.0 -302.9 -313.4 -322.3 -330.3 -337.6 -343.9 -349.2 -353.4 -356.6 -359.1 -1.0 -2.7 -4.2 -5.8 -7.4 -9.1 -10.6
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Quadruple-Mode PCS/Cellular/GPS LNA/Mixers MAX2351/4/8/9/MAX2530/1/7/8
Table 12. S-Parameters for GPS Mixer in High Linearity Mode
FREQUENCY (Hz) 100M 200M 300M 400M 500M 600M 700M 800M 900M 1G 1.1G 1.2G 1.3G 1.4G 1.5G 1.51G 1.52G 1.53G 1.54G 1.55G 1.56G 1.57G 1.58G 1.59G S11 MAG 955.2m 947.6m 938m 926.8m 910.8m 896m 877.6m 854.6m 825.7m 790.1m 743.8m 681.1m 594.6m 474.7m 307.7m 288.2m 268.2m 247.7m 226.8m 205.4m 183.7m 161.5m 139m 116.2m PHASE (DEG) -3.662 -6.944 -10.250 -13.550 -16.840 -20.300 -23.970 -27.950 -32.250 -37.090 -42.690 -49.330 -57.350 -67.280 -79.620 -80.960 -82.330 -83.700 -85.080 -86.460 -87.840 -89.200 -90.520 -91.770 FREQUENCY (Hz) 1.6G 1.7G 1.8G 1.9G 2G 2.1G 2.2G 2.3G 2.4G 2.5G 2.6G 2.7G 2.8G 2.9G 3G 3.1G 3.2G 3.3G 3.4G 3.5G 3.6G 3.7G 3.8G 3.9G 4G S11 MAG 93.14m 143.3m 357.5m 522.6m 639m 718.6m 772.8m 811.4m 842.9m 869.8m 890.8m 906.1m 916.8m 924m 928.9m 932.3m 934.5m 935.8m 936.4m 936.4m 936m 935.3m 934.3m 933.1m 931.7m PHASE (DEG) -92.870 67.370 53.140 40.470 30.150 21.880 15.230 9.874 5.410 1.356 -2.443 -5.968 -9.216 -12.200 -14.940 -17.490 -19.880 -22.150 -24.300 -26.360 -28.340 -30.240 -32.080 -33.880 -35.620
18
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Quadruple-Mode PCS/Cellular/GPS LNA/Mixers MAX2351/4/8/9/MAX2530/1/7/8
Table 13. Noise Parameters for Cellular LNA in HGHL Mode
FREQUENCY NFMIN (dB) (MHz) 700 0.75 800 0.76 810 0.76 820 0.76 830 0.76 840 0.77 850 0.77 860 0.78 870 0.77 880 0.77 890 0.77 900 0.78 1000 0.79
Table 15. Noise Parameters for GPS LNA in HGHL Mode
FREQUENCY NFMIN (dB) (MHz) 1400 0.71 1500 0.73 1510 0.74 1520 0.74 1530 0.74 1540 0.74 1550 0.75 1560 0.75 1570 0.75 1580 0.75
|OPT|
0.15 0.16 0.16 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.18 0.19
OPT 107 117 118 119 120 121 122 123 123 124 125 126 134
RN () 4.0 3.9 3.9 3.8 3.8 3.8 3.8 3.8 3.8 3.8 3.7 3.7 3.6
|OPT|
0.20 0.19 0.19 0.19 0.19 0.19 0.19 0.19 0.19 0.19
OPT 78 84 85 85 86 86 87 87 88 88
RN () 4.7 4.6 4.6 4.6 4.6 4.6 4.6 4.6 4.6 4.6
Table 14. Noise Parameters for PCS LNA in HGHL Mode
FREQUENCY (MHz) 1800 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000 2100 NFMIN (dB) 0.89 0.89 0.89 0.89 0.89 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.91
Chip Information
TRANSISTOR COUNT: 2538 PROCESS: BiCMOS
|OPT|
0.22 0.19 0.19 0.19 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.17 0.17
OPT -123 -129 -130 -131 -131 -133 -134 -134 -135 -136 -137 -138 -147
RN () 4.3 4.2 4.2 4.2 4.2 4.1 4.1 4.1 4.1 4.1 4.1 4.1 4.0
______________________________________________________________________________________
19
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers MAX2351/4/8/9/MAX2530/1/7/8
Typical Application Circuit
VCC CELL 3.3nH 8.2pF 6800pF 3.3k 100pF 28 27 PCS 26 IF_SEL 1 6800pF 1nH 2 PCS 1.2pF 3 6800pF 7.5nH 4 CELL 2.4pF VCC SHDN 6800pF GPS 2.2nH 6 1.8pF G1 7 8 9 10 11 MODE 0.8pF 5.1nH 0.8pF 20k RBIAS 10k PLL ENABLE PLL LOOP FILTER /1.5 15 12 13 14 VCO /2 16 LO_OUT BUFFEN 5 17 VCC IF OUTPUT MUX 20 21 8.2k 25 24 23 22
IF1
VCC
GPS IF
19 3.3k IF0
MAX2538
18
XTAL
20
______________________________________________________________________________________
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Pin Configurations (continued)
PLNA_OUT
MAX2351/4/8/9/MAX2530/1/7/8
CMIX_IN
PMIX_IN
IF_SEL
BAND
28
27
26
25
24
23
22
CLNA_OUT
1
IF1+
IF1-
21
I.C.
PLNA_IN
2
IF OUTPUT MUX
20
I.C.
GND
3
19
IFO-
CLNA_IN
4
18
IFO+
SHDN
5
17
VCC
MAX2351
N.C./GND 6 X2 16 LO_OUT
G1
7 8 N.C./GND 9 G2 10 I.C. 11 MODE 12 BIAS 13 PLL 14 LO_IN
15
BUFFEN
______________________________________________________________________________________
21
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers MAX2351/4/8/9/MAX2530/1/7/8
Pin Configurations (continued)
CMIX_IN IF_SEL
GND
28
27
26
25
24
23
22
CLNA_OUT
1
IF1+
IF1-
I.C.
I.C.
21
I.C.
N.C./GND
2
IF OUTPUT MUX
20
I.C.
GND
3
19
IFO-
CLNA_IN
4
18
IFO+
SHDN
5
17
VCC
MAX2354
N.C./GND 6 16 LO_OUT
G1
7 8 N.C./GND 9 G2 10 I.C. 11 MODE 12 BIAS 13 PLL 14 LO_IN
15
BUFFEN
22
______________________________________________________________________________________
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Pin Configurations (continued)
PLNA_OUT CMIX_IN PMIX_IN IF_SEL
MAX2351/4/8/9/MAX2530/1/7/8
BAND
28
27
26
25
24
23
22
CLNA_OUT
1
IF1+
IF1-
21
I.C.
PLNA_IN
2
IF OUTPUT MUX
20
I.C.
GND
3
19
IFO-
CLNA_IN
4
18
IFO+
SHDN
5
17
VCC
MAX2358
N.C./GND 6
/2
16
LO_OUT
G1
7 8 N.C./GND 9 G2 10 I.C. 11 MODE 12 BIAS 13 PLL 14 LO_IN
15
BUFFEN
______________________________________________________________________________________
23
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers MAX2351/4/8/9/MAX2530/1/7/8
Pin Configurations (continued)
PLNA_OUT N.C./GND PMIX_IN IF_SEL
28
27
26
25
24
23
22
N.C./GND
1
IF1+
IF1-
I.C.
21
I.C.
PLNA_IN
2
IF OUTPUT MUX
20
I.C.
GND
3
19
IFO-
N.C./GND
4
18
IFO+
SHDN
5
17
VCC
MAX2359
N.C./GND 6 16 LO_OUT
G1
7 8 N.C./GND 9 G2 10 I.C. 11 MODE 12 BIAS 13 PLL 14 LO_IN
15
BUFFEN
24
______________________________________________________________________________________
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Pin Configurations (continued)
PLNA_OUT CMIX_IN PMIX_IN IF_SEL BAND
MAX2351/4/8/9/MAX2530/1/7/8
28
27
26
25
24
23
22
CLNA_OUT
1
IF1+
IF1-
21
GIF-
PLNA_IN
2
IF OUTPUT MUX
20
GIF+
GND
3
19
IFO-
CLNA_IN
4
18
IFO+
SHDN
5
MAX2530
17
VCC
GLNA_IN
6 /1.5
16
LO_OUT
G1
7 8 GLNA_OUT 9 G2 10 GMIX_IN 11 MODE
15 12 BIAS 13 PLL 14 LO_IN
BUFFEN
______________________________________________________________________________________
25
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers MAX2351/4/8/9/MAX2530/1/7/8
Pin Configurations (continued)
PLNA_OUT CMIX_IN PMIX_IN IF_SEL BAND
28
27
26
25
24
23
22
CLNA_OUT
1
IF1+
IF1-
21
GIF-
PLNA_IN
2
IF OUTPUT MUX
20
GIF+
GND
3
19
IFO-
CLNA_IN
4
MAX2531
18
IFO+
SHDN
5
17
VCC
GLNA_IN
6 /1.5
X2
16
LO_OUT
G1
7 8 GLNA_OUT 9 G2 10 GMIX_IN 11 MODE
15 12 BIAS 13 PLL 14 LO_IN
BUFFEN
26
______________________________________________________________________________________
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Pin Configurations (continued)
CMIX_IN IF_SEL BAND
MAX2351/4/8/9/MAX2530/1/7/8
28
27
26
25
24
23
22
CLNA_OUT
1
IF1+
IF1-
I.C.
I.C.
21
GIF-
N.C./GND
2
IF OUTPUT MUX
20
GIF+
GND
3
19
IFO-
CLNA_IN
4
MAX2537
18
IFO+
SHDN
5
17
VCC
GLNA_IN
6 /1.5
/2
16
LO_OUT
G1
7 8 GLNA_OUT 9 G2 10 GMIX_IN 11 MODE
15 12 BIAS 13 PLL 14 LO_IN
BUFFEN
Package Information
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.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 27 (c) 2004 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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