CXA3174N Просмотр технического описания (PDF) - Sony Semiconductor

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CXA3174N

AGC IF for GSM/PCS

Sony Semiconductor 

AGC IF for GSM/PCS

CXA3174N

Description

The CXA3174N is a 4-bit digital control variable

gain amplifier suitable for the communications.

20 pin SSOP (Plastic)

Features

• Gain control amplifier with the wide gain variable

range

• Doubler circuit for the LO (local) signal eliminates

need for the phase shifter

Functions

• IF signal gain control circuit

• I/Q quadrature demodulator

• Doubler circuit for the LO signal

• Gain control by the 4-bit digital data

• Power saving

Absolute Maximum Ratings (Ta = 25 °C)

• Supply voltage VCC

14

V

• Operating temperature range

Topr

–35 to +80

°C

• Storage temperature range

Tstg

–65 to +150 °C

Applications

GSM and PCS portable telephones

Operating Conditions

Supply voltage VCC

2.7 to 3.3

V

Structure

Bipolar silicon monolithic IC

Block Diagram and Package Outline

20

19

18

17

16

15

14

13

12

11

Reg

Gain Control AMP

Phase

Shifter

Gain Cont

×2

1

2

3

4

5

6

7

8

9

10

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.

—1—

E96932A8Z

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