TDA3845 데이터 시트보기 (PDF) - Philips Electronics

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TDA3845

Quasi split-sound circuit and AM demodulator

Philips Electronics 

Philips Semiconductors

Quasi split-sound circuit and AM

demodulator

Objective specification

TDA3845; TDA3845T

Fig.7 AM IF filter for standard L.

Fig.8 AM IF filter for standard L-accent.

IF filter proposal for AM sound (see Figs 7 and 8)

With an IF filter in accordance with this proposal, the video buzz suppression on the audio output is better than 50 dB (in

accordance with CCIR 468-3, m = 54%) for the worst case video modulation with 6 kHz sinewave black-to-white.

Note to figures 7 and 8.

Where SC = sound carrier and PC = picture carrier.

January 1993

12

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