Sony CXA3221AN Datasheet
RX Gain Control Amplifier
Description
CXA3221AN is an RX gain control amplifier suitable
for CDMA cellular/PCS phone.
Features
• Wide gain control range
• Linear gain slope
• Wideband operation (50MHz to 300MHz)
• Very small package (8 Pin SSOP)
• Low voltage operation
• Power save function included
Absolute Maximum Ratings
• Supply voltage VCC 6V
•Operating temperature Topr –55 to +125 °C
• Storage temperature Tstg –65 to +150 °C
• Supply voltage range –0.3 to 6 V
• Logic input voltage –0.3 to VCC + 0.3V
• Signal input voltage –0.3 to VCC + 0.3V
•
Differential signal input voltage
0 to 2.5 V
Operating Condition
Supply voltage VCC 2.7 to 3.8 V
Applications
CDMA cellular/PCS phone
Structure
Bipolar silicon monolithic IC
– 1 –
E98910A8Y
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
CXA3221AN
8 pin SSOP (Plastic)
– 2 –
CXA3221AN
Block Diagram
Pin Configuration
OUT
OUTX
IF Output
GCTL
VCC
GND
PSV
Gain control
Supply Voltage
Ground
Power Save
CDMA IN
CDMA INX
IF Input for CDMA
Bias
Driver
3
CDMA INX
6
OUTX
1
GND
GCTL
8
4
PSV
5
OUT
2
CDMA IN
V
CC
7
– 3 –
CXA3221AN
Pin
No.
Symbol
Pin voltage
TYP (V)
Equivalent circuit Description
2k
GND
2k
VCC
2
3
2 CDMA IN
Differential input pins for received
CDMA IF signal.
Ground.
3
CDMA INX
1.15
1
GND
0
Positive power supply.
7
VCC
3.0
1.15
Pin Description
4 PSV
Power save function pin.
High: Active
Low: Power save
—
—
—
GND
VCC
135k
4
GND
VCC
12.3k
12.3k
460460
6
5
5 OUT
Differential output pins for received
CDMA IF signal.
Open collector output.
6
OUTX
8 GCTL
Gain control pin.
—
GND
V
CC
6k6k
8
8k8k
200
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