MAX2653 반도체 회로 부품 판매점
Low-Noise Amplifiers
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 Maxim Integrated |
19-1506; Rev 2; 8/03
GSM900 and DCS1800/PCS1900
Dual-Band, Low-Noise Amplifiers
General Description
Features
The MAX2651/MAX2652/MAX2653 silicon germanium
(SiGe), low-noise amplifiers (LNAs) are intended for use
in GSM900, DCS1800, and PCS1900 band wireless
handsets. The MAX2651/MAX2652 consist of two LNAs,
one optimized for the GSM900 band and the other opti-
mized for the DCS1800/PCS1900 bands. They feature a
band-select pin to switch between the two LNAs, as well
as a gain-step input to reduce the gain of each LNA by
20dB and reduce supply current. The MAX2652 is func-
tionally equivalent to the MAX2651, but features a low-
power shutdown mode. The MAX2653 consists of a
single LNA optimized for the DCS1800 and PCS1900
bands, and has a shutdown feature and a 20dB gain
step.
o Wide Operating Frequency Range
800MHz to 1000MHz (MAX2651/52)
1800MHz to 2000MHz (MAX2651/52/53)
o Excellent Low-Noise Performance
1.2dB/1.3dB over GSM Receive Band
(MAX2651/52)
1.8dB/1.8dB/1.7dB over DCS Receive Band
(MAX2651/52/53)
o High Gain
18dB over GSM Receive Band (MAX2651/52)
18dB/17.5dB/18.5dB over DCS Receive Band
(MAX2651/52/53)
The MAX2652 and MAX2653 together form an ideal
solution for triple-band phone applications (GSM, DCS,
and PCS bands).
The MAX2651/MAX2652/MAX2653 are fabricated using
an advanced high-frequency SiGe bipolar process. As
a result, all devices provide low noise figure, high gain,
and high input third-order intercept point (IP3) perfor-
mance at the GSM, DCS, and PCS bands. A pull-up
resistor to VCC at each LNA output allows for gain
adjustability. A minimal number of external components
are needed for input and output matching, helping to
reduce board space.
The MAX2651/MAX2652 are packaged in a 10-pin µMAX,
while the MAX2653 is packaged in an 8-pin µMAX. All
devices operate from a single +2.7V to +3.3V supply.
Applications
GSM900/DCS1800 Dual-Band Phones
o 20dB Gain Reduction in Low-Gain Mode
o Externally Adjustable Gain
o +2.7V to +3.3V Single-Supply Operation
o Low Supply Current
5.4mA to 7.0mA in High-Gain Mode
2.2mA in Low-Gain Mode
o 0.25µA Shutdown Current (MAX2652/53)
PART
MAX2651EUB
MAX2652EUB
MAX2653EUA
Ordering Information
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
10 µMAX
10 µMAX
8 µMAX
GSM900/DCS1800/PCS1900 Triple-Band Phones
DCS1800 or PCS1900 Single-Mode Phones
IS-136 TDMA Dual-Band Phones
Pin Configurations/Functional Diagrams
SHDN (GND) 1
GSMIN 2
GND 3
DCSIN 4
BAND 5
HIGH
LOW
LOW
HIGH
( ) ARE FOR MAX2651.
DC BIAS
CONTROL
MAX2651
MAX2652
10 GAIN
9 GSMOUT
8 VCC
7 DCSOUT
6 GND
SHDN
GND
DCSIN
GND
1
2
3
4
LOW
HIGH
DC BIAS
CONTROL
MAX2653
8 GAIN
7 VCC
6 DCSOUT
5 GND
________________________________________________________________ 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.
GSM900 and DCS1800/PCS1900
Dual-Band, Low-Noise Amplifiers
ABSOLUTE MAXIMUM RATINGS
VCC to GND ..............................................................-0.3V to +6V
SHDN, GAIN, BAND to GND......................-0.3V to (VCC + 0.3V)
GSMIN, DCSIN ..........................................1.0V peak (+10dBm)
Input Current (all digital inputs) .......................................±10mA
Continuous Power Dissipation
8-Pin µMAX (derate 4.5mW/°C above +70°C)..............362mW
10-Pin µMAX (derate 5.6mW/°C above +70°C) ............444mW
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.
CAUTION! ESD SENSITIVE DEVICE
DC ELECTRICAL CHARACTERISTICS—MAX2651
(VCC = +2.7V to +3.3V, BAND = GAIN = VCC, no input signal, all input/output ports terminated in 50Ω, TA = -40°C to +85°C, unless
otherwise noted. Typical values are at VCC = +3V, TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Input Voltage Range
VCC
2.7 3.3 V
DCS band, high-gain mode
(BAND = GAIN = VCC)
5.7 8.7
Input Supply Current
DCS band, low-gain mode
(BAND = VCC, GAIN = GND)
ICC
GSM band, high-gain mode
(BAND = GND, GAIN = VCC)
2.2 3.3
mA
5.9 9.6
GSM band, low-gain mode
(BAND = GND, GAIN = VCC)
2.2 3.6
Input Logic Threshold High
Input Logic Threshold Low
Input Logic High Current
Input Logic Low Current
VIH
VIL
IIH VIN = VCC
IIL VIN = GND
1.5 V
0.5 V
1.5 µA
-1.5 µA
DC ELECTRICAL CHARACTERISTICS—MAX2652
(VCC = +2.7V to +3.3V, BAND = GAIN = VCC, no input signal, all input/output ports terminated in 50Ω, TA = -40°C to +85°C, unless
otherwise noted. Typical values are at VCC = +3V, TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Input Voltage Range
VCC
2.7 3.3 V
DCS band, high-gain mode
(BAND = GAIN = VCC)
7.0 11.0
Input Supply Current
DCS band, low-gain mode
(BAND = VCC, GAIN = GND)
ICC
GSM band, high-gain mode
(BAND = GND, GAIN = VCC)
2.3 3.6
mA
7.2 11.0
Shutdown Supply Current
GSM band, low-gain mode
(BAND = GND, GAIN = VCC)
SHDN = GND
2.4 3.7
0.25
µA
2 _______________________________________________________________________________________
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MAX2653 amplifier
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