MAX2538ETI [MAXIM]
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers; 四模PCS /蜂窝/ GPS LNA /混频器
| 型号： | MAX2538ETI |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Quadruple-Mode PCS/Cellular/GPS LNA/Mixers |
| 文件： | 总27页 (文件大小：603K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-2487; Rev 3; 1/04
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
General Description
Features
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.
♦ 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
✕
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.
♦ Small 28-Pin QFN Package (5mm 5mm)
Ordering Information
PART
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
-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*
MAX2351ETI
MAX2354ETI
MAX2358ETI
MAX2359ETI
MAX2530ETI
MAX2531ETI
MAX2537ETI
MAX2538ETI
*EP = exposed pad.
Applications
Triple-Band, Quadruple-Mode PCS/Cellular Handsets
Single-Band Handsets
Pin Configurations
E911 and Traveler Assistance Through GPS
GSM/TDMA Cellular Phones
28
27
26
25
24
23
22
CLNA_OUT
1
2
3
4
21 GIF-
20 GIF+
Selector Guide
PLNA_IN
GND
PART CELL PCS GPS CELL VCO
PCS VCO
Internal doubler
—
19
IFO-
MAX2351
MAX2354
MAX2358
MAX2359
MAX2530
MAX2531
MAX2537
MAX2538
✓
✓
✓
—
✓
✓
✓
✓
✓
—
✓
✓
✓
✓
—
✓
—
—
—
—
✓
Input
Input
MAX2538
18 IFO+
CLNA_IN
Internal divider
—
Input
5
6
7
17
SHDN
GLNA_IN
G1
V
CC
Input
Input
Input
÷2
16 LO_OUT
✓
Input
Internal doubler
Input
÷1.5
15
BUFFEN
✓
Internal divider
Internal divider
✓
Input
8
9
10
11
12
13
14
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
ABSOLUTE MAXIMUM RATINGS
CC
Digital Input Voltage to GND......................-0.3V to (V + 0.3V)
LNA Input (Low-Gain Mode) Level ...................................15dBm
LO Input Level ....................................................................5dBm
Digital Input Current............................................................10mA
V
to GND...........................................................-0.3V to +4.3V
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
CC
Continuous Power Dissipation (T = +70°C)
A
28-Pin QFN-EP (derate 21mW/°C
above +70°C)...................................................................1.6W
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
= 2.7V to 3.3V, R
= 20kΩ, T = -40°C to +85°C. Typical values are at V
= 2.75V and T = +25°C, unless otherwise
CC A
CC
BIAS
A
noted.) (Note 1)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
PCS MODE (see Table 1 for abbreviations)
MAX2358/MAX2359/MAX2530/MAX2538
MAX2351/MAX2531
7.4
8.1
9.0
10
ULG
MAX2358/MAX2359/MAX2530/MAX2538
MAX2351/MAX2531
8.6
11
Operating Supply Current
LG
mA
9.3
11.5
32
MAX2358/MAX2359/MAX2530/MAX2538
MAX2351/MAX2531
26.5
27.2
HGHL
33
CELLULAR MODE (see Table 1 for abbreviations)
MAX2351/MAX2354/MAX2530/MAX2531
6.5
8.5
9.5
17
ULG
LG
MAX2358/MAX2537/MAX2538
MAX2351/MAX2354/MAX2530/MAX2531
MAX2358/MAX2537/MAX2538
MAX2354/MAX2530
7.7
13.9
15.1
23.5
21.5
24.7
20.6
21.8
27.7
25.7
28.9
18.5
28
MG
MAX2351/MAX2531
26
Operating Supply Current
mA
MAX2358/MAX2537/MAX2538
MAX2351/MAX2354/MAX2530/MAX2531
MAX2358/MAX2537/MAX2538
MAX2354/MAX2530
29.5
26
HGLL
HGHL
27.5
35
MAX2351/MAX2531
33.5
36
MAX2358/MAX2537/MAX2538
GPS MODE (MAX2530/MAX2531/MAX2538)
MAX2530/MAX2537/MAX2538
MAX2531
18.9
19.6
23
24
PLL =
Operating Supply Current
low
mA
µA
SHUTDOWN MODE
Shutdown Supply Current
ALL MODES
SHDN = low, BUFFEN = PLL = low
20
Digital Input Logic High
Digital Input Logic Low
1.8
V
V
0.6
2
_______________________________________________________________________________________
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
DC ELECTRICAL CHARACTERISTICS (continued)
(V
= 2.7V to 3.3V, R
= 20kΩ, T = -40°C to +85°C. Typical values are at V
= 2.75V and T = +25°C, unless otherwise
CC A
CC
BIAS
A
noted.) (Note 1)
PARAMETER
Digital Input Current
CONDITIONS
MIN
TYP
MAX
UNITS
Measured at guaranteed logic threshold
-10
+10
µA
Additional Current for LO_OUT
Buffer
BUFFEN = high, cellular and PCS modes, P = -7dBm
LO
2.4
3.5
mA
mA
PCS MAX2358/MAX2359/MAX2530/MAX2538
PCS MAX2351/MAX2531
5.4
6.1
4.7
5.9
7
Buffer-Only
Mode Supply
Mode
SHDN = low,
BUFFEN = high,
7.5
6.5
7.5
CELL MAX2351/MAX2354/MAX2530/MAX2531
CELL MAX2358/MAX2537/MAX2538
P
= -7dBm
LO
SHDN = low,
PLL-Only Mode PLL = high,
= -7dBm
3.2
4.5
mA
P
LO
AC ELECTRICAL CHARACTERISTICS
(EV kits to evaluate the MAX2351/MAX2354/MAX2358/MAX2359/MAX2530/MAX2531/MAX2357/MAX2538, f
= 869MHz to
CELL
894MHz, f
= 1930MHz to 1990MHz, f
= 1575.42MHz (MAX2530/MAX2531/MAX2537/MAX2538), f = 183.6MHz, high-side
PCS
GPS
IF
LO for all except GPS, 50Ω system impedance, V
power = -10dBm, T = -40°C to +85°C. Typical values are at f
= 2.7V to 3.3V, R
= 20kΩ, R
= R
= 1960MHz, V
= 3.3kΩ, R
= 8.2kΩ, LO input
CC
BIAS
IF0
IF1
GIF
= 881MHz, f
= 2.75V, LO input power = -
A
CELL
PCS
CC
7dBm, unless otherwise noted.) (Note 2)
PARAMETER
OVERALL PERFORMANCE
IF Frequency Range
CONDITIONS
MIN
TYP
MAX
UNITS
IF0 and IF1 (Note 3)
GIF (Note 3)
(Note 1)
70
110
869
1930
183.6
183.6
400
225
894
1990
-40
MHz
MHz
MHz
MHz
dBm
GPS IF Frequency Range
Cellular RF Frequency Range
PCS RF Frequency Range
LO Leakage to LNA inputs
(Note 1)
Cell, BUFFEN = high, 50Ω load, LO input power =
-10dBm (Note 1)
-10
-5
-7
LO Output Power
PLL Output Power
dBm
dBm
PCS, BUFFEN = high, 50Ω load, LO input power =
-10dBm (Note 1)
-11
-12
LNA PERFORMANCE (see Table 1 for abbreviations)
T
A
T
A
T
A
T
A
T
A
T
A
T
A
T
A
= +25°C
13.8
13.3
13.5
13.0
1.0
15
14.5
1.9
16.0
16.5
15.5
16.0
3.0
HGHL
= -40°C to +85°C
= +25°C
HGLL
= -40°C to +85°C
= +25°C
LNA Gain
CELL
dB
(Note 1)
MG
= -40°C to +85°C
= +25°C
0.5
3.0
-6
-4.9
-4
LG/ULG
= -40°C to +85°C
-6.5
-3.5
_______________________________________________________________________________________
3
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
AC ELECTRICAL CHARACTERISTICS (continued)
(EV kits to evaluate the MAX2351/MAX2354/MAX2358/MAX2359/MAX2530/MAX2531/MAX2357/MAX2538, f
= 869MHz to
CELL
894MHz, f
= 1930MHz to 1990MHz, f
= 1575.42MHz (MAX2530/MAX2531/MAX2537/MAX2538), f = 183.6MHz, high-side
PCS
GPS
IF
LO for all except GPS, 50Ω system impedance, V
power = -10dBm, T = -40°C to +85°C. Typical values are at f
= 2.7V to 3.3V, R
= 20kΩ, R
= R
= 1960MHz, V
= 3.3kΩ, R
= 8.2kΩ, LO input
CC
BIAS
IF0
IF1
GIF
= 881MHz, f
= 2.75V, LO input power = -
A
CELL
PCS
CC
7dBm, unless otherwise noted.) (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
17
UNITS
T
T
T
T
T
T
T
= +25°C
15
14.5
-5.5
-6
16
A
A
A
A
A
A
A
HGHL
= -40°C to +85°C
= +25°C
17.5
-3.2
-3.2
19
PCS
GPS
-4.5
-4.5
17.7
LNA Gain
(Note 1)
LG/ULG
dB
= -40°C to +85°C
= +25°C
16
= -40°C to +85°C
= +25°C
15.5
20
0.9
0.2
1.2
HGHL/
HGLL
Change over temperature from
T
T
T
T
= +25°C to +85°C
CELL
A
MG
= +25°C
2.0
5.0
1.2
2.5
6.5
1.5
A
A
A
LG/ULG
= +25°C
= +25°C
LNA Noise Figure
dB
HGHL
Change over temperature from
PCS
GPS
0.2
T
= +25°C to +85°C
A
LG/ULG
T
T
= +25°C
= +25°C
5.5
1.0
7.0
1.3
A
A
Change over temperature from
= +25°C to +85°C
0.2
13
T
A
P
= -25dBm, T = -40°C to +85°C
A
IN
HGHL
9.5
(Note 1)
P
P
P
P
= -25dBm, T = -40°C to +85°C
A
HGLL
MG
6.5
13.5
20
12.2
17
CELL
IN
IN
IN
IN
= -25dBm, T = -40°C to +85°C
A
LNA IP3
(Note 4)
LG/ULG
= -15dBm, T = -40°C to +85°C
24.6
dBm
A
= -25dBm, T = -40°C to +85°C
A
HGHL
8
12
(Note 1)
PCS
GPS
LG/ULG
P
P
= -15dBm, T = -40°C to +85°C
20
0
24.4
4.6
IN
IN
A
= -25dBm, T = -40°C to +85°C
A
4
_______________________________________________________________________________________
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
AC ELECTRICAL CHARACTERISTICS (continued)
(EV kits to evaluate the MAX2351/MAX2354/MAX2358/MAX2359/MAX2530/MAX2531/MAX2357/MAX2538, f
= 869MHz to
CELL
894MHz, f
= 1930MHz to 1990MHz, f
= 1575.42MHz (MAX2530/MAX2531/MAX2537/MAX2538), f = 183.6MHz, high-side
PCS
GPS
IF
LO for all except GPS, 50Ω system impedance, V
power = -10dBm, T = -40°C to +85°C. Typical values are at f
= 2.7V to 3.3V, R
= 20kΩ, R
= R
= 1960MHz, V
= 3.3kΩ, R
= 8.2kΩ, LO input
CC
BIAS
IF0
IF1
GIF
= 881MHz, f
= 2.75V, LO input power = -
A
CELL
PCS
CC
7dBm, unless otherwise noted.) (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
MIXER PERFORMANCE (see Tables 1 and 2 for abbreviations)
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
= +25°C
= -40°C to +85°C
= +25°C
= -40°C to +85°C
= +25°C
= -40°C to +85°C
= +25°C
= -40°C to +85°C
= +25°C
= -40°C to +85°C
= +25°C
= -40°C to +85°C
= +25°C
= -40°C to +85°C
= +25°C
9.5
8.5
9.0
8
12.5
12
15.0
16
HGHL/
MG
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
14.5
15.5
12.5
14
HGLL/
LG
CELL
6
10
ULG
HGHL
LG
5
10.0
8.5
8.0
6.5
7.5
6.0
12.0
10
13
16.5
16.5
14.5
14.5
13.5
14.5
17.5
19
Mixer Gain
(Note 1)
dB
12
12
11
PCS
GPS
ULG
15
13
8
9.5
HGHL/
MG
Change over temperature from
T
0.3
7.2
= +25°C to +85°C
A
CELL
HGLL/
LG
T
= +25°C
9
A
ULG
T
T
= +25°C
= +25°C
7
7
9
A
A
Mixer Noise
Figure
8.5
dB
HGHL
Change over temperature from
0.3
T
T
T
T
= +25°C to +85°C
= +25°C
= +25°C
= +25°C
PCS
GPS
A
A
A
A
LG
6.2
6
7.2
7.5
7.5
9
ULG
Change over temperature from
= +25°C to +85°C
0.5
T
A
_______________________________________________________________________________________
5
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
AC ELECTRICAL CHARACTERISTICS (continued)
(EV kits to evaluate the MAX2351/MAX2354/MAX2358/MAX2359/MAX2530/MAX2531/MAX2357/MAX2538, f
= 869MHz to
CELL
894MHz, f
= 1930MHz to 1990MHz, f
= 1575.42MHz (MAX2530/MAX2531/MAX2537/MAX2538), f = 183.6MHz, high-side
PCS
GPS
IF
LO for all except GPS, 50Ω system impedance, V
power = -10dBm, T = -40°C to +85°C. Typical values are at f
= 2.7V to 3.3V, R
= 20kΩ, R
= R
= 1960MHz, V
= 3.3kΩ, R
= 8.2kΩ, LO input
CC
BIAS
IF0
IF1
GIF
= 881MHz, f
= 2.75V, LO input power = -
A
CELL
PCS
CC
7dBm, unless otherwise noted.) (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
MAX2354/MAX2358/MAX2530/
MAX2537/MAX2538,
6
7.8
HGHL/
MG
P
= -20dBm (Note 1)
IN
CELL
MAX2351/MAX2531, P = -20dBm
4
3.5
-4.5
3
6.5
6.5
-2.2
5
IN
HGLL/
LG
P
P
P
= -20dBm
= -20dBm
= -20dBm
IN
IN
IN
Mixer IP3
(Note 4)
dBm
ULG
MAX2358/MAX2359/
MAX2530/MAX2538
HGHL
(Note 1)
PCS
GPS
MAX2351/MAX2531
2.5
-4.5
-7
4.5
-1.8
-3.6
0.5
LG
P
P
P
= -20dBm
= -20dBm
= -20dBm
IN
IN
IN
ULG
-3
Note 1: Guaranteed at T = +25°C and T = +85°C by production test, and guaranteed by design and characterization at T = -40°C.
A
A
A
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.
Typical Operating Characteristics
(MAX2538 EV kit, f = 183.6MHz, high-side LO for all modes except GPS, 50Ω system impedance, R
= 20kΩ, R
= R
=
IF1
IF
BIAS
IF0
3.3kΩ, R
= 8.2kΩ, f
= 881MHz, f
= 1960MHz, f
= 1575.42MHz, V
= 2.75V, LO input power = -7dBm, HGHL mode,
GIF
CELL
PCS
GPS
CC
T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT vs. BIAS RESISTANCE
SUPPLY CURRENT vs. TEMPERATURE
MIXER NOISE FIGURE vs. LO POWER
50
40
30
20
10
0
32
14
12
10
8
CELL
30
28
26
PCS LOW-SIDE LO
CELL
PCS
PCS
24
CELL
2.75V, 3.0V, 3.3V
22
GPS
20
GPS
6
PCS
18
GPS
16
4
0
10
20
30
40
50
-40
-15
10
35
60
85
-10
-8
-6
-4
-2
0
BIAS RESISTANCE (kΩ)
TEMPERATURE (°C)
LO POWER (dBm)
6
_______________________________________________________________________________________
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Typical Operating Characteristics (continued)
(MAX2538 EV kit, f = 183.6MHz, high-side LO for all modes except GPS, 50Ω system impedance, R
= 20kΩ, R
= R
=
IF1
IF
BIAS
IF0
3.3kΩ, R
= 8.2kΩ, f
= 881MHz, f
= 1960MHz, f
= 1575.42MHz, V = 2.75V, LO input power = -7dBm, HGHL mode,
GIF
CELL
PCS
GPS
CC
T
A
= +25°C, unless otherwise noted.)
MIXER IIP3 vs. LO POWER
MIXER GAIN vs. SUPPLY CURRENT
MIXER GAIN vs. LO POWER
10
8
20
16
GPS
CELL
GPS
16
PCS
14
12
10
8
PCS
PCS LOW-SIDE LO
6
12
4
CELL
CELL
PCS
8
PCS LOW-SIDE LO
GPS
2
4
0
0
-2
-10
-8
-6
-4
-2
0
10
15
20
25
30
35
40
-10
-8
-6
-4
-2
0
LO POWER INPUT (dBm)
SUPPLY CURRENT (mA)
LO INPUT POWER (dBm)
LNA NOISE FIGURE vs. SUPPLY CURRENT
LNA GAIN vs. SUPPLY CURRENT
MIXER IIP3 vs. SUPPLY CURRENT
1.6
1.4
1.2
1.0
0.8
0.6
20
18
16
14
12
10
8
18
14
10
6
GPS
CELL
PCS
PCS
PCS
GPS
2
CELL
GPS
-2
-6
-10
CELL
10
15
20
25
30
35
40
10
15
20
25
30
35
40
10
15
20
25
30
35
40
SUPPLY CURRENT (mA)
SUPPLY CURRENT (mA)
SUPPLY CURRENT (mA)
LNA IIP3 vs. SUPPLY CURRENT
20
15
10
5
CELL
PCS
0
GPS
-5
-10
10
15
20
25
30
35
40
SUPPLY CURRENT (mA)
_______________________________________________________________________________________
7
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Pin Description
PIN
MAX2530
MAX2531
MAX2538
NAME
FUNCTION
MAX2351
MAX2358
MAX2354 MAX2359
MAX2537
Cellular LNA Output. Internally matched to 50Ω including an
on-chip DC-blocking capacitor.
1
1
—
1
1
CLNA_OUT
PCS LNA Input. Requires a DC-blocking capacitor that can be
used as part of the matching network.
2
3
4
—
3, 27
4
2
3
2
3
4
—
3
PLNA_IN
GND
Ground
Cellular LNA Input. Requires a DC-blocking capacitor that can
be used as part of the matching network.
—
4
CLNA_IN
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.
5
5
5
5
5
SHDN
1, 4, 6, 8,
24
6, 8
2, 6, 8
—
—
6
2
N.C./GND Pin can be grounded or left open-circuit.
GPS LNA Input. Requires a DC-blocking capacitor, which can
GLNA_IN
—
—
7
6
7
be used as part of the matching network.
Operating Mode Logic Input. Sets device operating modes.
See Table 2 for details.
7
7
7
G1
GPS LNA Output. Internally matched to 50Ω including an on-
chip DC-blocking capacitor.
—
—
—
8
8
GLNA_OUT
Operating Mode Logic Input. Sets device operating modes.
See Table 2 for details.
9
10, 20, 21
—
9
9
9
9
G2
10, 20,
21, 25, 28 21, 27
10, 20,
—
10
11
25, 28
10
11
I.C.
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.
—
—
GMIX_IN
MODE
Operating Mode Logic Input. Sets device operating modes.
See Table 2 for details.
11
11
11
Bias Setting Pin. For nominal bias, connect a 20kΩ resistor to
12
13
12
13
12
13
12
13
12
13
BIAS
PLL
ground. Adjust R
LNAs.
to alter the linearity of the mixers and
BIAS
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.
LO Input. Internally matched to 50Ω, including DC-blocking
capacitor.
14
15
14
15
14
15
14
15
14
15
LO_IN
LO Buffer Enable Logic Input. A logic high enables the
external LO buffer port. Floats low.
BUFFEN
8
_______________________________________________________________________________________
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Pin Description (continued)
PIN
MAX2530
MAX2354 MAX2359 MAX2531 MAX2537
MAX2538
NAME
FUNCTION
MAX2351
MAX2358
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.
16
17
16
17
16
17
16
17
16
17
LO_OUT
2.7V to 3.3V Supply Pin. Connect a 100pF bypass capacitor
as close as possible to the pin.
V
CC
Differential IF Output Port 0. Requires a pullup inductor and a
18, 19
18, 19
18, 19
18, 19
18, 19
IF0+, IF0- DC-blocking capacitor at each pin, which can be used as part
of the matching network. If not used, connect pins to V
.
CC
GPS IF Output. Requires a pullup inductor and a DC-blocking
capacitor at each pin, which can be used as part of the
GIF+, GIF-
—
—
—
20, 21
22, 23
20, 21
22, 23
matching network. If not used, connect pins to V
.
CC
Differential IF Output Port 1. Requires a pullup inductor and a
IF1+, IF1- DC-blocking capacitor at each pin, which can be used as part
of the matching network. If not used, connect pins to V
22, 23
22, 23
22, 23
.
CC
Cellular Mixer Input. Internally matched to 50Ω, including an
on-chip DC-blocking capacitor.
24
25
24
—
—
24
25
24
—
CMIX_IN
PMIX_IN
PCS Mixer Input. Internally matched to 50Ω. Requires a DC-
blocking capacitor.
25
IF Select Logic Input. Logic low selects IF0 port, and logic
high selects IF1 port.
26
27
26
—
26
—
26
27
26
27
IF_SEL
BAND
BAND Logic Input. See Table 2 for details.
PCS LNA Output. Requires a pullup inductor and a DC-
28
EP
—
28
EP
28
EP
—
PLNA_OUT blocking capacitor, which can be used as part of the
matching network.
Exposed
EP
EP
Exposed Pad. RF and DC ground.
Low-Noise Amplifiers
Detailed Description
Signal Paths and Operation Modes
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 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.
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
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
LNA linearity is required for cross-modulation suppres-
sion. Use HGLL mode when the transmitter is off and
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.
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.
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 V
and a series capacitor as
CC
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.
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 V . The inductive pullup may be
CC
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 3.3kΩ resistor is recommended for IF0 and
IF1, and 8.2kΩ for the GIF port. The equivalent parallel
RC impedance of the IF ports is typically 12.2kΩ in par-
allel with 0.75pF. Tables 10, 11, 12 show S-parameters
for the mixer input points.
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.
Table 1. Abbreviation for LNA and Mixer
Modes
ABBREVIATION
MODE
High gain/high linearity
High gain/low linearity
Midgain
HGHL
HGLL
MG
Bias Control
The bias control input (BIAS pin) controls the IC bias
current. Typically, connect a 20kΩ resistor to ground for
normal operation. Smaller bias resistor values increase
the supply current and linearity.
LG
Low gain
ULG
HL
Ultra-low gain
High linearity
LL
Low linearity
10 ______________________________________________________________________________________
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Table 2. Modes of Operation
BAND
OPERATION MODE
LNA
HGHL
HGLL
MG
MIXER
HL
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
G1
0
MODE
BAND
HGHL
HGLL
MG
1
0
X
X
X
1
X
X
0
0
0
0
0
0
1
1
1
1
LL
0
0
Cellular
HL
0
1
LG
LG
LL
1
1
ULG
HGHL
LG
LG
LG
1
0
HGHL
LG
HL
0
0
PCS
LL
1
1
ULG
GPS
LG
LG
1
0
GPS*
GPS
GPS
0
0
*MAX2530/MAX2531/MAX2537/MAX2538 only.
X = Don’t care.
Table 3. LO Frequency Plan
CELLULAR LO
FREQUENCY
GPS LO
FREQUENCY
PART
VCO FREQUENCY
PCS LO FREQUENCY
2 x f
MAX2351
MAX2354
MAX2358
MAX2359
MAX2530
MAX2531
MAX2537
MAX2538
Cell Band VCO
Cell Band VCO
PCS Band VCO
f
f
—
—
—
—
VCO
VCO
VCO
—
0.5 x f
—
f
f
f
VCO
VCO
PCS Band VCO
VCO
VCO
Cell and PCS Dual-Band VCO
Cell Band VCO
f
f
(2/3) f
(4/3) f
(2/3) f
(2/3) f
VCO
VCO
VCO
VCO
VCO
VCO
2 x f
VCO
PCS Band VCO
PCS Band VCO
0.5 x f
0.5 x f
—
f
VCO
VCO
VCO
GPS Interstage
Layout Considerations
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.
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.
______________________________________________________________________________________ 11
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Table 4. Typical Cascade Performance of Cellular-Band Receiver with 2.5dB Interstage
Loss (R
= 20kΩ)
BIAS
PARAMETER
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
Conversion Gain (dB)
Noise Figure (dB)
Input IP3 (dBm)
Supply Current (mA) (MAX2351/MAX2354/MAX2530/MAX2531)
Supply Current (mA) (MAX2358/MAX2537/MAX2538)
Table 6. Typical Cascade Performance
Table 5. Typical Cascade Performance of
PCS-Band Receiver with 2.5dB Interstage
of GPS Band (R
= 20kΩ)
BIAS
Loss (R
= 20kΩ)
BIAS
WITH 2.5dB
INTERSTAGE
SAW LOSS
WITH LC
INTERSTAGE
MATCH
PARAMETER
PARAMETER
Conversion Gain (dB)
Noise Figure (dB)
HGHL
26.00
1.72
LG
4.50
13.16
+5.44
ULG
4.00
13.16
+3.46
Conversion Gain (dB)
Noise Figure (dB)
Input IP3 (dBm)
30.50
1.32
29.09
1.99
Input IP3 (dBm)
-8.54
Supply Current (mA)
(MAX2358/MAX2359/
MAX2530/MAX2538)
-15.05
-14.35
26.50
27.20
8.60
9.30
7.40
8.10
Supply Current (mA)
(MAX2530/MAX2537/
MAX2538)
18.90
18.90
Supply Current (mA)
(MAX2351/MAX2531)
Supply Current (mA)
(MAX2531)
19.60
25
19.60
15
Image Suppression (dB)
12 ______________________________________________________________________________________
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Table 7. S-Parameters for Cellular LNA in HGHL Mode
S11
S21
S12
S22
FREQUENCY
(Hz)
PHASE
(DEG)
PHASE
(DEG)
PHASE
(DEG)
PHASE
(DEG)
MAG
MAG
MAG
MAG
100M
200M
300M
400M
500M
600M
700M
800M
810M
820M
830M
840M
850M
860M
870M
880M
890M
900M
1G
835m
-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
554.2m
874.9m
1.301
1.883
2.599
3.396
4.244
4.959
5.341
5.358
5.37
-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
736.4µ
1.099m
1.65m
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
995.1m
986.1m
971.9m
949.1m
909.9m
845m
-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
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
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
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
5.379
5.385
5.386
5.385
5.38
5.372
5.362
5.348
4.556
3.71
1.25G
1.5G
1.75G
2G
116m
129.9m
135.2m
132.1m
110m
76.60
9.951
3.071
2.536
1.933
989.2m
549.2m
1.273
1.579
1.697
1.723
1.729
60.00
-2.140
44.58
-12.040
-22.720
-38.460
-58.420
-70.290
-75.550
-78.930
-81.490
-84.470
2.25G
2.5G
2.75G
3G
629.8m
762.5m
703.3m
490m
29.61
49.89m
128.9m
198.4m
238m
50.28
89.36
69.98
3.25G
3.5G
3.75G
4G
335.7m
258.5m
212.7m
189.9m
55.30
264.9m
284m
43.14
32.81
298.7m
23.80
______________________________________________________________________________________ 13
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Table 8. S-Parameters for PCS LNA in HGHL Mode
S11
S21
S12
S22
FREQUENCY
(Hz)
PHASE
(DEG)
PHASE
(DEG)
PHASE
(DEG)
PHASE
(DEG)
MAG
MAG
MAG
MAG
100M
200M
300M
400M
500M
600M
700M
800M
900M
1G
826.3m
730m
-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
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
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
8.437m
15.81m
21.38m
25.89m
25.66m
32.75m
36.18m
39.47m
42.7m
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
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
-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
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
45.59m
48.5m
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
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
284.8m
285.6m
286.4m
287.2m
288m
2.1G
2.2G
2.3G
2.4G
2.5G
2.6G
2.7G
2.8G
2.9G
3G
297.2m
307.7m
319.5m
332.6m
346.9m
362.5m
379.7m
398.1m
415.5m
428.9m
757.6m
768.5m
779.7m
791.3m
803.2m
815.5m
828.4m
840.5m
849.8m
73.47m
74.47m
75.59m
76.93m
78.78m
81.42m
84.47m
4.420
1.4740
-1.475
-4.627
-8.150
14 ______________________________________________________________________________________
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Table 9. S-Parameters for GPS LNA
S11
S21
S12
S22
FREQUENCY
(Hz)
PHASE
(DEG)
PHASE
(DEG)
PHASE
(DEG)
PHASE
(DEG)
MAG
MAG
MAG
MAG
100M
200M
300M
400M
500M
600M
700M
800M
900M
1G
897m
878.4m
859m
-8.953
391.4m
640.8m
892.3m
1.231
1.691
2.249
2.97
-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
279.4µ
645.4µ
883.4µ
1.579m
3.26m
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
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
-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
-17.210
-25.060
839.1m
818.7m
802.3m
787.6m
772m
-32.680
-40.390
-47.710
5.893m
10m
-55.560
-64.070
3.867
4.916
6.029
7.037
7.742
8.033
7.955
7.64
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
751.1m
718.6m
666.6m
593.1m
506.2m
419.5m
344m
-73.420
-83.770
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
-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
337.2m
330.7m
324.3m
318m
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
311.9m
306m
300.2m
294.6m
289.2m
283.9m
239.4m
208m
94.75
186m
90.66
170.2m
158.8m
150.9m
145.5m
142.1m
139.8m
138.3m
137m
87.15
2.1G
2.2G
2.3G
2.4G
2.5G
2.6G
2.7G
2.8G
2.9G
3G
84.75m
86.99m
89.28m
91.57m
93.8m
84.05
81.26
4.802
4.58
78.68
76.29
4.382
4.204
4.044
3.895
3.727
3.557
74.07
542.2m
551.3m
558m
-6.000
95.98m
98.11m
100.1m
102.5m
106m
72.04
-9.700
70.19
-13.100
-16.100
-18.600
-21.200
133.5m
128.4m
139.9m
68.60
562.3m
567m
67.51
66.24
574.8m
______________________________________________________________________________________ 15
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Table 9. S-Parameters for GPS LNA (continued)
S11
S21
S12
S22
FREQUENCY
(Hz)
PHASE
(DEG)
PHASE
(DEG)
PHASE
(DEG)
PHASE
(DEG)
MAG
MAG
MAG
MAG
3.1G
3.2G
3.3G
3.4G
3.5G
3.6G
3.7G
3.8G
3.9G
4G
162.7m
182.9m
193.1m
187.8m
173.9m
161.5m
153.7m
150m
-110.6
-117.0
-126.3
-135.5
-141.5
-144.5
-145.6
-146.3
-146.9
-147.8
3.458
3.422
3.422
3.405
3.340
3.251
3.161
3.080
3.008
2.945
-288.7
-290.4
-293.0
-296.5
-300.1
-303.4
-306.2
-308.8
-311.2
-313.5
109.3m
111.8m
113.9m
116.3m
119.1m
122.2m
125.5m
128.9m
132.4m
136.2m
64.45
62.71
61.32
60.27
59.34
58.40
57.45
56.54
55.68
54.86
579.9m
581.1m
580.5m
580.1m
580.8m
581.9m
582.9m
584m
-24.1
-26.8
-29.2
-31.4
-33.4
-35.3
-37.3
-39.1
-41.0
-42.7
149.2m
150.3m
585.3m
587m
Table 10. S-Parameters for Cellular Mixer in High-Linearity Mode
S11
S11
FREQUENCY
(MHz)
FREQUENCY
(Hz)
MAG
PHASE (DEG)
-192.4
-203.5
-214.6
-286.0
-337.2
-356.3
-8.0
MAG
PHASE (DEG)
-6.397
880M
890M
900M
1G
289m
100M
200M
300M
400M
500M
600M
700M
800M
810M
820M
830M
840M
850M
860M
870M
997.8m
993.1m
984.5m
968.2m
941.8m
879m
284.4m
285.5m
451.9m
734.2m
815.1m
846.4m
860.2m
864.6m
862m
-13.080
-20.480
-29.270
1.25G
1.5G
1.75G
2G
-40.340
-56.150
739.9m
475.4m
444.8m
414.7m
385.9m
359.1m
335.2m
314.9m
299.3m
-80.690
-16.9
-123.700
-129.900
-136.700
-144.100
-152.300
-161.200
-170.900
-181.400
2.25G
2.5G
2.75G
3G
-16.9
-16.9
850.6m
846.6m
857.1m
860.5m
857.2m
849.3m
-16.9
-16.9
3.25G
3.5G
3.75G
4G
-16.9
-16.9
-16.9
-16.9
16 ______________________________________________________________________________________
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Table 11. S-Parameters for PCS Mixer in High Linearity Mode
S11
FREQUENCY
(Hz)
S11
FREQUENCY
(Hz)
MAG
PHASE (DEG)
MAG
PHASE (DEG)
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
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
-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
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
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
-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
-2.7
-4.2
-5.8
-7.4
-9.1
-10.6
______________________________________________________________________________________ 17
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Table 12. S-Parameters for GPS Mixer in High Linearity Mode
S11
S11
FREQUENCY
(Hz)
FREQUENCY
(Hz)
MAG
PHASE (DEG)
-92.870
67.370
53.140
40.470
30.150
21.880
15.230
9.874
MAG
PHASE (DEG)
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
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
100M
200M
300M
400M
500M
600M
700M
800M
900M
1G
955.2m
947.6m
938m
926.8m
910.8m
896m
-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
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
5.410
1.356
-2.443
-5.968
1.1G
1.2G
1.3G
1.4G
-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
1.5G
1.51G
1.52G
1.53G
1.54G
1.55G
1.56G
1.57G
1.58G
1.59G
116.2m
18 ______________________________________________________________________________________
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Table 13. Noise Parameters for Cellular
LNA in HGHL Mode
Table 15. Noise Parameters for GPS LNA
in HGHL Mode
FREQUENCY
FREQUENCY
NF
(dB) |Γ
|
∠Γ
R (Ω)
N
MIN
OPT
OPT
NF
(dB) |Γ
|
∠Γ
R (Ω)
N
MIN
OPT
OPT
(MHz)
1400
1500
1510
1520
1530
1540
1550
1560
1570
1580
(MHz)
700
800
810
820
830
840
850
860
870
880
890
900
1000
0.71
0.73
0.74
0.74
0.74
0.74
0.75
0.75
0.75
0.75
0.20
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
78
4.7
4.6
4.6
4.6
4.6
4.6
4.6
4.6
4.6
4.6
0.75
0.76
0.76
0.76
0.76
0.77
0.77
0.78
0.77
0.77
0.77
0.78
0.79
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
107
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
84
85
85
86
86
87
87
88
88
117
118
119
120
121
122
123
123
124
125
126
134
Table 14. Noise Parameters for PCS LNA
in HGHL Mode
Chip Information
TRANSISTOR COUNT: 2538
FREQUENCY
(MHz)
1800
NF
MIN
(dB)
PROCESS: BiCMOS
|Γ
|
∠Γ
R (Ω)
N
OPT
OPT
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
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
-123
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
1900
1910
1920
1930
1940
1950
1960
1970
1980
1990
2000
2100
-129
-130
-131
-131
-133
-134
-134
-135
-136
-137
-138
-147
______________________________________________________________________________________ 19
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Typical Application Circuit
V
CC
IF1
CELL
PCS
V
CC
6800pF
8.2pF
3.3nH
3.3kΩ
100pF
28
27
26
IF_SEL
25
24
23
22
1
2
3
4
21
20
19
18
GPS
IF
8.2kΩ
3.3kΩ
6800pF
1nH
1.2pF
PCS
IF0
6800pF
6800pF
7.5nH
MAX2538
2.4pF
CELL
V
CC
SHDN
2.2nH
5
6
7
17
16
15
V
CC
÷2
GPS
1.8pF
LO_OUT
BUFFEN
÷1.5
G1
8
9
10
11
12
13
14
VCO
MODE
20kΩ
BIAS
0.8pF
5.1nH
0.8pF
R
10kΩ
PLL ENABLE
LOOP
FILTER
PLL
XTAL
20 ______________________________________________________________________________________
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Pin Configurations (continued)
28
27
26
25
24
23
22
CLNA_OUT
1
2
3
4
I.C.
21
PLNA_IN
GND
20 I.C.
19
IFO-
18 IFO+
CLNA_IN
5
6
7
SHDN
N.C./GND
G1
17
16
15
V
CC
MAX2351
X2
LO_OUT
BUFFEN
8
9
10
11
12
13
14
______________________________________________________________________________________ 21
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Pin Configurations (continued)
28
27
26
25
24
23
22
CLNA_OUT
1
2
3
4
I.C.
21
N.C./GND
GND
20 I.C.
19
IFO-
18 IFO+
CLNA_IN
5
6
7
SHDN
N.C./GND
G1
17
16
15
V
CC
MAX2354
LO_OUT
BUFFEN
8
9
10
11
12
13
14
22 ______________________________________________________________________________________
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Pin Configurations (continued)
28
27
26
25
24
23
22
CLNA_OUT
1
2
3
4
I.C.
21
PLNA_IN
GND
20 I.C.
19
IFO-
18 IFO+
CLNA_IN
5
6
7
SHDN
N.C./GND
G1
17
16
15
V
CC
MAX2358
÷2
LO_OUT
BUFFEN
8
9
10
11
12
13
14
______________________________________________________________________________________ 23
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Pin Configurations (continued)
28
27
26
25
24
23
22
N.C./GND
1
2
3
4
I.C.
21
PLNA_IN
GND
20 I.C.
19
IFO-
18 IFO+
N.C./GND
5
6
7
SHDN
N.C./GND
G1
17
16
15
V
CC
MAX2359
LO_OUT
BUFFEN
8
9
10
11
12
13
14
24 ______________________________________________________________________________________
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Pin Configurations (continued)
28
27
26
25
24
23
22
CLNA_OUT
1
2
3
4
GIF-
21
PLNA_IN
GND
20 GIF+
19
IFO-
18 IFO+
CLNA_IN
MAX2530
5
6
7
SHDN
GLNA_IN
G1
17
16
15
V
CC
LO_OUT
BUFFEN
÷1.5
8
9
10
11
12
13
14
______________________________________________________________________________________ 25
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Pin Configurations (continued)
28
27
26
25
24
23
22
CLNA_OUT
1
2
3
4
GIF-
21
PLNA_IN
GND
20 GIF+
19
IFO-
MAX2531
18 IFO+
CLNA_IN
5
6
7
SHDN
GLNA_IN
G1
17
16
15
V
CC
X2
LO_OUT
BUFFEN
÷1.5
8
9
10
11
12
13
14
26 ______________________________________________________________________________________
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Pin Configurations (continued)
28
27
26
25
24
23
22
CLNA_OUT
1
2
3
4
GIF-
21
N.C./GND
GND
20 GIF+
19
IFO-
MAX2537
18 IFO+
CLNA_IN
5
6
7
SHDN
GLNA_IN
G1
17
16
15
V
CC
÷2
LO_OUT
BUFFEN
÷1.5
8
9
10
11
12
13
14
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
© 2004 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
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