TDA3845 Datasheet, PDF (12/18 Pages) NXP Semiconductors – Quasi split-sound circuit and AM demodulator

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
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