Philips TDA2546A Datasheet

INTEGRATED CIRCUITS

DATA SH EET

TDA2546A

Quasi-split-sound circuit
with 5,5 MHz demodulation

Product specification
File under Integrated Circuits, IC02

February 1985

Philips Semiconductors Product specification

Quasi-split-sound circuit

TDA2546A

with 5,5 MHz demodulation

GENERAL DESCRIPTION

The TDA2546A is a monolithic integrated circuit for quasi-split-sound processing, including 5,5 MHz demodulation, in
television receivers.

Features

1st i.f. (V.C.: vision carrier plus S.C.: sound carrier)

• 3-stage gain controlled i.f. amplifier

• A.G.C. circuit

• Reference amplifier and limiter amplifier for vision carrier (V.C.) processing

• Linear multiplier for quadrature demodulation

2nd i.f. (5,5 MHz signal)

• 8-stage limiter amplifier

• Quadrature demodulator

• A.F. amplifier with de-emphasis

• AV switch

QUICK REFERENCE DATA

Supply voltage (pin 15) V
Supply current (pin 15) I

P=I15

Minimum i.f. vision carrier input voltage (r.m.s. value) V
Output voltage; 5,5 MHz (r.m.s. value) V
Output voltage; 5,742 MHz (r.m.s. value) V
I.F. control range ∆G

P=V15-16

VC1-18 (rms)
14-16(rms)
14-16(rms)

v

typ. 12 V
typ. 57 mA
typ. 150 µV
typ. 100 mV
typ. 45 mV
typ. 64 dB

Signal-to-weighted-noise ratio (rel. to 1 kHz; 30 kHz deviation)

at 5,5 MHz S + W/W typ. 58 dB

for 2T/20T pulses with white bars

at 5,742 MHz S + W/W typ. 56 dB

A.F. output voltage (r.m.s. value) V

o6-16(rms)

typ. 0,6 V

PACKAGE OUTLINES

18-lead DIL; plastic (SOT 102); SOT102-1; 1996 November 19.

February 1985 2

Philips Semiconductors Product specification

Quasi-split-sound circuit
with 5,5 MHz demodulation

TDA2546A

February 1985 3

Fig.1 Block diagram.

(1) I.F. signal: vision carrier (V.C.) and sound carrier (S.C.)