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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 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.
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
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
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
-40°C to +85°C
*EP
= exposed pad.
Applications
Triple-Band, Quadruple-Mode PCS/Cellular Handsets
PLNA_OUT
Pin Configurations
CMIX_IN
PMIX_IN
IF_SEL
BAND
IF1+
22
IF1-
23
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
V
CC
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
V
CC
to GND ...........................................................-0.3V to +4.3V
Digital Input Voltage to GND ......................-0.3V to (V
CC
+ 0.3V)
LNA Input (Low-Gain Mode) Level ...................................15dBm
LO Input Level ....................................................................5dBm
Digital Input Current............................................................10mA
Continuous Power Dissipation (T
A
= +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
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
(V
CC
= 2.7V to 3.3V, R
BIAS
= 20kΩ, T
A
= -40°C to +85°C. Typical values are at V
CC
= 2.75V and T
A
= +25°C, 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
µA
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
_______________________________________________________________________________________
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
DC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 2.7V to 3.3V, R
BIAS
= 20kΩ, T
A
= -40°C to +85°C. Typical values are at V
CC
= 2.75V and T
A
= +25°C, 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, P
LO
= -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
µA
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
P
LO
= -7dBm
CELL MAX2358/MAX2537/MAX2538
SHDN
= low,
PLL = high,
P
LO
= -7dBm
PLL-Only Mode
AC ELECTRICAL CHARACTERISTICS
(EV kits to evaluate the MAX2351/MAX2354/MAX2358/MAX2359/MAX2530/MAX2531/MAX2357/MAX2538, f
CELL
= 869MHz to
894MHz, f
PCS
= 1930MHz to 1990MHz, f
GPS
= 1575.42MHz (MAX2530/MAX2531/MAX2537/MAX2538), f
IF
= 183.6MHz, high-side
LO for all except GPS, 50Ω system impedance, V
CC
= 2.7V to 3.3V, R
BIAS
= 20kΩ, R
IF0
= R
IF1
= 3.3kΩ, R
GIF
= 8.2kΩ, LO input
power = -10dBm, T
A
= -40°C to +85°C. Typical values are at f
CELL
= 881MHz, f
PCS
= 1960MHz, V
CC
= 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, 50Ω load, LO input power =
-10dBm (Note 1)
LO Output Power
PCS, BUFFEN = high, 50Ω 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
T
A
= +25°C
T
A
= -40°C to +85°C
T
A
= +25°C
T
A
= -40°C to +85°C
T
A
= +25°C
T
A
= -40°C to +85°C
T
A
= +25°C
T
A
= -40°C to +85°C
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
_______________________________________________________________________________________
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, f
CELL
= 869MHz to
894MHz, f
PCS
= 1930MHz to 1990MHz, f
GPS
= 1575.42MHz (MAX2530/MAX2531/MAX2537/MAX2538), f
IF
= 183.6MHz, high-side
LO for all except GPS, 50Ω system impedance, V
CC
= 2.7V to 3.3V, R
BIAS
= 20kΩ, R
IF0
= R
IF1
= 3.3kΩ, R
GIF
= 8.2kΩ, LO input
power = -10dBm, T
A
= -40°C to +85°C. Typical values are at f
CELL
= 881MHz, f
PCS
= 1960MHz, V
CC
= 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
T
A
= +25°C
T
A
= -40°C to +85°C
T
A
= +25°C
T
A
= -40°C to +85°C
T
A
= +25°C
T
A
= -40°C to +85°C
T
A
= +25°C
Change over temperature from
T
A
= +25°C to +85°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
Change over temperature from
T
A
= +25°C to +85°C
T
A
= +25°C
T
A
= +25°C
Change over temperature from
T
A
= +25°C to +85°C
HGHL
CELL
LNA IP3
(Note 4)
PCS
GPS
HGLL
MG
LG/ULG
HGHL
LG/ULG
P
IN
= -25dBm, T
A
= -40°C to +85°C
(Note 1)
P
IN
= -25dBm, T
A
= -40°C to +85°C
P
IN
= -25dBm, T
A
= -40°C to +85°C
P
IN
= -15dBm, T
A
= -40°C to +85°C
P
IN
= -25dBm, T
A
= -40°C to +85°C
(Note 1)
P
IN
= -15dBm, T
A
= -40°C to +85°C
P
IN
= -25dBm, T
A
= -40°C to +85°C
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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