TA31142 datasheet(1/6 Pages) UTC

Part #	TA31142

Description	LINEAR INTEGRATED CIRCUIT

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Manufacturer	UTC [Unisonic Technologies]

Direct Link	http://www.utc-ic.com

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UTCTA31142

LINEAR INTEGRATED CIRCUIT

UTC UNISONIC TECHNOLOGIES CO., LTD.

1

QW-R103-015,A

LOW POWER IF RECEIVER IC

DESCRIPTION

The UTC TA31142 is a low power IF receiver IC

and

is

suitable

for

use

as

the

second

IF

downconverter in double-conversion paging systems.

It is well-suited for POCSAG paging applications and

incorporates a 2-level FSK demodulator consisting of

a quadrature FM demodulator, on-chip bit-rate filter,

and 1-bit comparator. An on-chip 1V regulator is

provided for convenient biasing of off-chip circuitry.

FEATURES

*Extremely low power operation with power-down

feature

*Built-in crystal oscillator for mixer local oscillator

*Mixer input frequency: 10-50 MHz

*Quadrature detector

*On-chip bit-rate filter

*Audio output

*1-bit comparator with open collector output

*1V regulator

*1.1V low battery alarm

TSSOP-20

PIN CONFIGURATIONS

OSCIN

1

2

3

4

5

6

7

8

9

10

OSCOUT

MIXOUT

VCC

IFIN

DEC

FSKREF

QUAD

IFOUT

AFOUT

LPFIN

11

12

13

14

15

16

17

18

19

20

LPFOUT

BS

CHARGE

FSKOUT

ALM

REGCON

VSS

REGOUT

MIXIN

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