November 1987

2

Philips Semiconductors

Product specification

Stereo/dual TV sound decoder circuit

TDA3803A

GENERAL DESCRIPTION

The TDA3803A is a stereo/dual TV sound decoder circuit with static switching for processing two AF signals in TV and

VCR equipment. The LOW/HIGH static switching signals control the AF output selector. Two operational amplifiers

perform bandpass filtering of the identification signals.

Features

• Amplification of the two AF input signals by integrated operational amplifiers

• Low distortion stereo de-matrix

• All operational amplifiers offset compensated

• De-emphasis with operational amplifiers, preferably applied to the output terminals

• Two output ports each with two channels for headphones and loudspeakers

• Dual sound information at one port, each port individually switchable from sound I to sound II and sound II to sound I

• Mute function; while mute is active, it is possible to connect an external mono AF input signal to pin 10 appearing at

pins 20 to 23.

• Identification without additional signals (horizontal etc.)

QUICK REFERENCE DATA

PACKAGE OUTLINE

28-lead DIL; plastic (SOT117); SOT117-1; 1996 November 25.

Supply voltage (pin 13)

typ.

12

V

Supply current (pin 13)

typ.

28

mA

Pilot carrier amplifier gain control range

∆G

v

>

40

dB

(r.m.s. value)

=1

V

LED output current

typ.

12

mA

Weighted signal-to-noise ratio

of the a.f. signal switches (CCIR468/2)

(S

+N)/N

≥

60

dB

Crosstalk in stereo mode

α

S

>

40

dB

Crosstalk in dual sound mode

α

DS

>

60

dB