Stereo dual TV sound decoder circuit


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.)
Circuit diagram:
Stereo/dual TV sound decoder circuit
Datasheet for TDA3803: Download

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