Rainbow Electronics MAX2653 - Manual (Page 13)

MAX2652
MAX2651/MAX2652/MAX2653
GSM900 and DCS1800/PCS1900
Dual-Band, Low-Noise Amplifiers
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Pin Description
GND
GSMIN
GND
DCSIN
BAND
LOGIC-LEVEL
BAND CONTROL
LOGIC-LEVEL
GAIN CONTROL
1
2
3
4
5
10
100pF
C9
2.2pF
220pF
9
8.2nH
180 Ω
220pF
2.2nH
DCS
OUTPUT
GSM
OUTPUT
330 Ω
8
7
6
910 Ω
220pF
1.5pF
3.9nH
68pF
47pF
DCS INPUT
(1805MHz TO 1880MHz)
GSM INPUT
(925MHz TO 960MHz)
15pF
GAIN
GSMOUT
V CC
V CC
V CC
V CC
DCSOUT
GND
MAX2651
8.2nH
910 Ω
1.2pF 10µF
Figure 1. MAX2651 Typical Application Circuit
PIN
—
1, 3, 6
2
8
7
5
4
10
9
FUNCTION
Shutdown Logic Input. Drive low to enter shutdown; drive high or con-
nect to V
CC for normal operation.
RF Ground. Connect to the ground plane as close to the IC as possible
to minimize trace inductance.
RF Input for GSM Band
Supply Voltage Input, +2.7V < V CC < +3.3V
RF Output for DCS and PCS Bands
Band-Select Logic Input. Drive BAND high to enable DCS/PCS LNA;
drive low to enable GSM LNA.
RF Input for DCS and PCS bands
Gain-Select Logic Input. Drive GAIN high for high-gain operation; drive
GAIN low for low-gain operation.
RF Output for GSM Band
1
3, 6
2
8
7
5
4
10
9
1
2, 4, 5
—
7
6
—
3
8
—
NAME
SHDN
GND
GSMIN
V CC
DCSOUT
BAND
DCSIN
GAIN
GSMOUT
MAX2651 MAX2652 MAX2653