MAX2651EUB Maxim, MAX2651EUB Datasheet - Page 13

• Manufacturer Part Number: MAX2651EUB
• Description: GSM900 and DCS1800/PCS1900 Dual-Band / Low-Noise Amplifiers
• Manufacturer: Maxim

Figure 1. MAX2651 Typical Application Circuit
MAX2651
1, 3, 6
10
—
2
4
5
7
8
9
(1805MHz TO 1880MHz)
(925MHz TO 960MHz)
GSM INPUT
MAX2652
DCS INPUT
3, 6
PIN
10
1
2
4
5
7
8
9
______________________________________________________________________________________
MAX2652
15pF
47pF
MAX2653
2, 4, 5
1.5pF
—
—
—
1
3
6
7
8
8.2nH
220pF
Dual-Band, Low-Noise Amplifiers
GSM900 and DCS1800/PCS1900
GSMOUT
68pF
DCSOUT
GSMIN
DCSIN
NAME
SHDN
BAND
3.9nH
GAIN
GND
V
910Ω
BAND CONTROL
CC
LOGIC-LEVEL
1
2
3
4
5
GND
GSMIN
GND
DCSIN
BAND
Shutdown Logic Input. Drive low to enter shutdown; drive high or con-
nect to V
RF Ground. Connect to the ground plane as close to the IC as possible
to minimize trace inductance.
RF Input for GSM Band
RF Input for DCS and PCS bands
Band-Select Logic Input. Drive BAND high to enable DCS/PCS LNA;
drive low to enable GSM LNA.
RF Output for DCS and PCS Bands
Supply Voltage Input, +2.7V < V
RF Output for GSM Band
Gain-Select Logic Input. Drive GAIN high for high-gain operation; drive
GAIN low for low-gain operation.
MAX2651
CC
GSMOUT
DCSOUT
GAIN
GND
for normal operation.
V
CC
GAIN CONTROL
LOGIC-LEVEL
10
9
8
7
6
V
CC
910Ω
220pF
330Ω
180Ω
10µF
V
FUNCTION
CC
CC
V
< +3.3V
CC
8.2nH
2.2nH
100pF
220pF
2.2pF
1.2pF
C9
Pin Description
GSM
OUTPUT
DCS
OUTPUT
13