Rainbow Electronics MAX2653 - Manual (Page 14)

MAX2651/MAX2652/MAX2653
GSM900 and DCS1800/PCS1900
Dual-Band, Low-Noise Amplifiers
14 ______________________________________________________________________________________
SHDN
GND
DCSIN
GND
1
2
4
3
1.0pF
(0.8pF*)
47pF
8
2.7nH
(2.2nH*)
DCS
OUTPUT
330 Ω
(510 Ω*)
7
6
5
1.5pF
3.3nH
100pF
2200pF
DCS INPUT
(1805MHz TO 1880MHz)
LOGIC-LEVEL
SHUTDOWN CONTROL
LOGIC-LEVEL
GAIN CONTROL
GAIN
V CC
V CC
100pF
200pF
DCSOUT
GND
MAX2653
1k 1k
* FOR OPTIMUM PCS-BAND (1930MHz TO 1990MHz) PERFORMANCE, USE THESE COMPONENTS.
V CC
Figure 3. MAX2653 Typical Application Circuit
SHDN
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
240 Ω
220pF
2.2nH
DCS
OUTPUT
GSM
OUTPUT
8
7
6
910 Ω
220pF
1.1pF
3.3nH
68pF
47pF
DCS INPUT
(1805MHz TO 1880MHz)
GSM INPUT
(925MHz TO 960MHz)
5.6pF
GAIN
GSMOUT
V CC
V CC
V CC
V CC
DCSOUT
GND
MAX2652
220pF
LOGIC-LEVEL
SHUTDOWN CONTROL
6.8nH
910 Ω
1.2pF 10µF
1µF
910 Ω
Figure 2. MAX2652 Typical Application Circuit