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PDF MAX2653 Data sheet ( Hoja de datos )
| Número de pieza | MAX2653 | |
| Descripción | Low-Noise Amplifiers | |
| Fabricantes | Maxim Integrated | |
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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.
1 page  
GSM900 and DCS1800/PCS1900
Dual-Band, Low-Noise Amplifiers
AC ELECTRICAL CHARACTERISTICS—MAX2652
(MAX2652 EV kit, fIN = 945MHz (GSM band), fIN = 1850MHz (DCS band), PIN = -30dBm, input and output matching networks are
optimized for the frequency band of interest, all input/output ports terminated in 50Ω, VCC = +3V, TA = +25°C, unless otherwise noted.)
(Note 2)
PARAMETER
Input Frequency Range
(Note 3)
SYMBOL
fIN
CONDITIONS
DCS band (BAND = VCC)
GSM band (BAND = GND)
DCS band, high-gain
mode (BAND = GAIN =
VCC)
TA = +25°C
TA = -40°C to +85°C
MIN
1805
925
16
15.5
TYP
17.5
MAX
1880
960
19
UNITS
MHz
19.5
Power Gain (Note 4)
DCS band, low-gain
TA = +25°C
mode (BAND = VCC,
GAIN = GND)
TA = -40°C to +85°C
G
GSM band, high-gain
TA = +25°C
mode (BAND = GND,
GAIN = VCC)
TA = -40°C to +85°C
-3.5 -2 -0.5
-4 0
dB
16.5 18 19.5
16 20
Noise Figure (Note 4)
Input Third-Order
Intercept Point
Input 1dB Compression
Point
NF
IIP3
IP-1dB
GSM band, low-gain
mode (BAND = GAIN =
GND)
TA = +25°C
TA = -40°C to +85°C
DCS band, high-gain mode
(BAND = GAIN = VCC)
DCS band, low-gain mode
(BAND = VCC, GAIN = GND)
GSM band, high-gain mode
(BAND = GND, GAIN = VCC)
GSM band, low-gain mode
(BAND = GAIN = GND)
(Note 5)
(Note 6)
DCS band, high-gain mode
(BAND = GAIN = VCC)
DCS band, low-gain mode
(BAND = VCC, GAIN = GND)
GSM band, high-gain mode
(BAND = GND, GAIN = VCC)
GSM band, low-gain mode
(BAND = GND, GAIN = GND)
DCS band, high-gain mode
(BAND = GAIN = VCC)
DCS band, low-gain mode
(BAND = VCC, GAIN = GND)
GSM band, high-gain mode
(BAND = GND, GAIN = VCC)
GSM band, low-gain mode
(BAND = GND, GAIN = GND)
-4.0 -2 -0.5
-4.5 0
1.8 2.0
5.8 6.3
dB
1.3 1.5
5.5 6.7
-8.5 -7
0 1.5
-9 -7.5
dBm
0.5 2.5
-18 -16.5
-10.5
-8
-18 -16.5
dBm
-10 -8.5
_______________________________________________________________________________________ 5
5 Page 
GSM900 and DCS1800/PCS1900
Dual-Band, Low-Noise Amplifiers
Typical Operating Characteristics (continued)
(MAX2652 EV kit, VCC = +3.0V, input and output matched with recommended matching networks, TA = +25°C, unless otherwise noted.)
MAX2652 (DCS Band)
POWER GAIN vs. INPUT POWER
20 0MA\X2652-toc04
LOW GAIN
18 -2
HIGH GAIN
16
-4
14 -6
12 -8
10
f = 945MHz
8
-25 -20 -15 -10
PIN (dBm)
-5
-10
-12
0
POWER GAIN vs. FREQUENCY
20
HIGH GAIN
10
0
LOW GAIN
-10
-20
1800 1840 1880 1920 1960 2000
FREQUENCY (MHz)
OUTPUT RETURN LOSS vs. FREQUENCY
0
HIGH GAIN
-10
-20 LOW GAIN
-30
-40
-50
1800
1840 1880 1920 1960
FREQUENCY (MHz)
2000
REVERSE ISOLATION vs. FREQUENCY
0
-10
LOW GAIN
-20
-30
-40 HIGH GAIN
-50
1800
1840 1880 1920 1960
FREQUENCY (MHz)
2000
INPUT RETURN LOSS vs. FREQUENCY
0
HIGH GAIN
-10
-20 LOW GAIN
-30
-40
-50
1800
1840 1880 1920 1960
FREQUENCY (MHz)
2000
HIGH-GAIN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
9.0
NO INPUT SIGNAL
8.5
8.0 TA = +85°C
7.5
7.0
TA = +25°C
6.5
6.0
5.5 TA = -40°C
5.0
2.7
2.8 2.9 3.0 3.1 3.2
SUPPLY VOLTAGE (V)
3.3
LOW-GAIN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
3.0
2.5 TA = +85°C
TA = +25°C
2.0
TA = -40°C
1.5
NO INPUT SIGNAL
1.0
2.7
2.8 2.9 3.0 3.1 3.2
SUPPLY VOLTAGE (V)
3.3
INPUT IP3 vs. SUPPLY VOLTAGE
4
TA = +85°C
2
0 TA = +25°C
-2 TA = -40°C
LOW GAIN
-4
HIGH GAIN
-6
TA = +85°C
-8
-10
2.7
TA = +25°C
TA = -40°C
2.8 2.9 3.0 3.1 3.2 3.3
SUPPLY VOLTAGE (V)
INPUT P1dB vs. SUPPLY VOLTAGE
-4
-6 LOW GAIN
TA = +85°C
-8
TA = +25°C
TA = -40°C
-14 TA = +85°C
-16 TA = +25°C
HIGH GAIN
TA = -40°C
-18
2.7 2.8 2.9 3.0 3.1 3.2 3.3
SUPPLY VOLTAGE (V)
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet MAX2653.PDF ] | |
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