TDA8732 Datasheet, PDF (4/14 Pages) NXP Semiconductors – NICAM-728 demodulator NIDEM

Philips Semiconductors
NICAM-728 demodulator (NIDEM)
PINNING
SYMBOL PIN
DESCRIPTION
CLKLPF 1 transconductance output for bit-rate loop low-pass filter
V_EEA
2
QPSKIN 3
ground for analog circuitry
QPSK modulated data input
V_CCA
CFI
4 power supply for analog circuitry
5 baseband cosine channel input after filtering
CFO
6 demodulated cosine channel output to low-pass filter
SFO
7 demodulated sine channel output to low-pass filter
SFI
8 baseband sine channel input after filtering
CARLPF 9 transconductance output for carrier loop low-pass filter
CAROSC 10 crystal input for carrier oscillator (frequency is 11.7 MHz
or 13.104 MHz)
QMC
11 monostable components connection for quadrature data
transition detector
V_CCD
IMC
12 power supply for digital circuitry
13 monostable components connection for in-phase data
transition detector
V_EED
DATA
14 ground for digital circuitry
15 728 kbit/s demodulated and differentially decoded serial
data output
CLKIN 16 bit-rate clock input at 728 kHz, phase-locked to the data
CLK
17 output clock frequency at 728 kHz
C5M
18 reference frequency output at
5.824 MHz (8 x CLK)
TEST
19 input for test purpose (grounded for normal operation)
CLKOS 20 crystal input for clock oscillator (frequency is 11.648 MHz)
Product specification
TDA8732
Fig.2 Pin configuration.
April 1993
4