Daewoo DTA-14C4TFF Service Manual page 45

APPENDIX
IC DESCRIPTION
2. TDA9830 TV sound AM-Demodulator and audio source switch
The TDA9830, a monolithic integrated circuit, is designed for AM-sound demodulation used in L and L' standard.
The IC provides an audio source selector and also mute switch.
Block Diagram : TDA9830
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