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MAX2656EXT+T

P1-P3P4-P6P7-P9P10-P12P13-P14
General Description
The MAX2654/MAX2655/MAX2656 high third-order
intercept point (IP3), low-noise amplifiers (LNAs) are
designed for applications in GPS, PCS, WLL, and satel-
lite phone systems. The MAX2654/MAX2655/MAX2656
incorporate on-chip internal output matching to 50Ω,
eliminating the need for external matching components.
A shutdown feature in the MAX2654/MAX2655 reduces
operating current to 0.1µA, eliminating the need for an
external supply switch.
The MAX2654 operates in the GPS frequency of
1575MHz with 15.1dB of gain, 1.5dB noise figure, and
only consumes 5.8mA. The MAX2655 is designed with
high-input IP3 to improve operation in cellular applica-
tions where the cellular power amplifier leaks into the
GPS receiver. The MAX2656 is designed for PCS
phone applications with 13.5dB of gain in high-gain
mode and 0.8dB of gain in low-gain mode (selected by
a logic control) and 1.9dB noise figure.
The IP3 of MAX2655/MAX2656 is adjustable by a single
external bias resistor (R
BIAS
), allowing supply current to
be optimized for a specific application.
The MAX2654/MAX2655/MAX2656 operate from +2.7V
to +5.5V single supply and are available in the minia-
ture 6-pin SC70 package.
________________________Applications
GPS Receivers
GPS Receivers in Cell Phones
DCS/PCS Cell Phones
Satellite Phones
Wireless Local Loop
Features
♦ Low Noise Figure
MAX2654: 1.5dB at 1575MHz
MAX2655: 1.45dB at 1575MHz
MAX2656: 1.9dB at 1960MHz
♦ High Gain
MAX2654: 15.1dB at 1575MHz
MAX2655: 14.1dB at 1575MHz
MAX2656: 13.5dB at 1960MHz
♦ 12.7dB Gain Step (MAX2656 only)
♦ Integrated 50Ω Output Matching
♦ Variable IP3 Set by One Bias Resistor
(MAX2655/MAX2656 only)
♦ 0.1µA Shutdown Mode (MAX2654/MAX2655 only)
♦ +2.7V to +5.5V Single-Supply Operation
♦ Ultra-Small 6-Pin SC70 Package
MAX2654/MAX2655/MAX2656
1575MHz/1900MHz Variable-IP3
Low-Noise Amplifiers
________________________________________________________________ Maxim Integrated Products 1
16
5
MAX2654
MAX2655
MAX2654
SC70-6
TOP VIEW
2
34
V
CC
RFOUT
( ) IS FOR MAX2654 ONLY
GND
GND
RFIN
BIAS (GND)
Pin Configuration
MAX2655
MAX2656
C2
3
4
6
10k
Cb
(1)
1
25
C1
R
BIAS
V
CTRL
/GND
V
CC
= +3.0V
RFOUT
RFIN
L1
BIAS
( ) IS FOR MAX2654 ONLY
Typical Operating Circuit
EVALUATION KIT MANUAL
FOLLOWS DATA SHEET
Ordering Information
PART
TEMP.
RANGE
PIN-
PACKAGE
SOT
TOP-
M ARK
MAX2654EXT-T
-40°C to +85°C
6 SC70-6
AAI
MAX2655EXT-T
-40°C to +85°C
6 SC70-6
AAJ
MAX2656EXT-T
-40°C to +95°C
6 SC70-6
AAK
PART FREQUENCY L 1 ( n H ) C 1 ( p F ) C 2 ( p F )
MAX2654 1575 5.6 6 1.6
MAX2655 1575 5.6 1800 1.5
MAX2656 1960 4.7 1800 1.2
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
19-1872; Rev 1; 4/02
MAX2654/MAX2655/MAX2656
1575MHz/1900MHz Variable-IP3
Low-Noise Amplifiers
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
CC
to GND .............................................................-0.3V to +6V
RF Input Power .................................................................+5dBm
Continuous Power Dissipation (T
A
= +70°C)
6-Pin SC70 (derate 3.1mW/°C above +70°C)..............245mW
Operating Temperature Range ...........................-40°C to +85°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature.........................................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
DC ELECTRICAL CHARACTERISTICS
(V
CC
= +2.7V to +5.5V, R
BIAS
= 511Ω ±1%, T
A
= -40°C to +85°C. No RF signal applied. RFIN is AC-coupled and terminated to 50Ω.
RFOUT is unconnected. Typical values are at V
CC
= +3V, T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER CONDITIONS MIN TYP MAX UNIT
Supply Voltage 2.7 5.5 V
T
A
= +25°C 5.8 8.2
V
RFOUT
= V
CC
T
A
= -40°C to +85°C 9.2
mA
T
A
= +25°C 0.1 1
Operating Supply Current
(MAX2654 only)
V
RFOUT
= GND
T
A
= -40°C to +85°C 2.1
µA
R
BIAS
= 511Ω ±1% 8.3 10
R
BIAS
= 698Ω ±1% 5.9
R
BIAS
= 357Ω ±1% 10.1
V
RFOUT
= V
CC
T
A
= +25°C
R
BIAS
= 511Ω ±1%,
T
A
= -40°C to +85°C
11.1
mA
T
A
= +25°C 0.1 1
Operating Supply Current
(MAX2655 only)
V
RFOUT
= GND
T
A
= -40°C to +85°C 2.2
µA
R
BIAS
= 511Ω ±1% 11.5 15.2
R
BIAS
= 715Ω ±1% 8.5
V
RFOUT
= GND
T
A
= +25°C
R
BIAS
= 511Ω ±1%,
T
A
= +85°C
13.6
mA
T
A
= +25°C 12.3
Operating Supply Current
(MAX2656 only)
V
RFOUT
= V
CC
T
A
= +85°C 14.6
mA
Input Logic High at V
RFOUT
(Note 2) 2 V
Input Logic Low at V
RFOUT
(Note 3) 0.6 V
MAX2654/MAX2655 15.6
Input Logic High Current
at V
RFOUT
(Note 4)
MAX2656 71
µA
MAX2654/MAX2655 1
Input Logic Low Current
at V
RFOUT
(Note 5)
MAX2656 -24
µA
MAX2654/MAX2655/MAX2656
1575MHz/1900MHz Variable-IP3
Low-Noise Amplifiers
AC ELECTRICAL CHARACTERISTICS (MAX2654)
(MAX2654 Evaluation Kit, V
CC
= +3.0V, P
IN
= -30dBm, f
IN
= 1575MHz, V
RFOUT
= V
CC
through a 10kΩ resistor, T
A
= +25°C. Typical
values are at V
CC
= +3V, T
A
= +25°C, unless otherwise noted.) (Note 6)
PARAMETER CONDITIONS MIN TYP MAX UNIT
Operating Frequency Range (Note 7) 1400 1700 MHz
Gain (Note 8) 12.7 15.1 dB
Gain Variation Over Temperature T
A
= -40°C to +85°C 0.15 1 dB
Input Third-Order Intercept Point
(Note 9)
-7.2 dBm
Input 1dB Compression Point -18 dBm
Noise Figure (Note 10) 1.5 1.8 dB
Input Return Loss 9.7 dB
Output Return Loss 8.4 dB
Reverse Isolation 30 dB
AC ELECTRICAL CHARACTERISTICS (MAX2655)
(MAX2655 Evaluation Kit, V
CC
= +3.0V, P
IN
= -30dBm, f
IN
= 1575MHz, V
RFOUT
= V
CC
through a 10kΩ resistor, R
BIAS
= 511Ω ±1%,
T
A
= +25°C. Typical values are at V
CC
= +3V, T
A
= +25°C, unless otherwise noted.) (Note 6)
PARAMETER CONDITIONS MIN TYP MAX UNIT
Operating Frequency Range (Note 7) 1400 1700 MHz
Gain (Note 8) 12 14.1 dB
Gain Variation Over Temperature T
A
= -40°C to +85°C 0.6 1.1 dB
R
BIAS
= 511Ω ±1% 2.8
R
BIAS
= 698Ω ±1% 2.2 dBm
Input Third-Order Intercept Point
(Note 9)
R
BIAS
= 357Ω ±1% 3.8
Input 1dB Compression Point -12.2 dBm
Noise Figure (Note 10) 1.45 1.9 dB
Input Return Loss 16.1 dB
Output Return Loss 15.5 dB
Reverse Isolation 32 dB
_______________________________________________________________________________________ 3
P1-P3P4-P6P7-P9P10-P12P13-P14

MAX2656EXT+T

Mfr. #:
Buy MAX2656EXT+T
Manufacturer:
Maxim Integrated
Description:
RF Amplifier 1575MHz/1900MHz Variable-IP3
Lifecycle:
New from this manufacturer.
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