TA31142 Datasheet, PDF (1/6 Pages) Unisonic Technologies – LINEAR INTEGRATED CIRCUIT

UTCTA31142 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 4
IFIN 5
DEC 6
FSKREF 7
IFOUT 8
QUAD 9
AFOUT 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