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TA31142 Datasheet

  • TA31142

  • LINEAR INTEGRATED CIRCUIT

  • 6頁(yè)

  • UTC-IC

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UTC TA31142
LINEAR INTEGRATED CIRCUIT
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
OSCOUT
2
MIXOUT
3
VCC
IFIN
DEC
FSKREF
IFOUT
QUAD
AFOUT
4
5
6
7
8
9
10
11
LPFIN
12
LPFOUT
13
BS
14
CHARGE
15
FSKOUT
16
ALM
17
REGCON
18
REGOUT
19
VSS
20
MIXIN
UTC
UNISONIC TECHNOLOGIES
CO., LTD.
1
QW-R103-015,A

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