HA12219NT Audio Signal Processor for Cassette Deck ADE-207-258A 2nd Edition July 1998 Description HA12219NT is silicon monolithic bipolar IC providing PB equalizer, REC equalizer system and each electronic control switch in one chip.
Functions • PB equalizer × 2 channel • REC equalizer × 2 channel • Each electronic control switch to change REC/PB etc.
• REC MUTE • REC head return switch Features • REC equalizer is very small number of external parts, built-in 2 types of frequency characteristics.
• PB equalizer circuit built-in.
• REC /PB are possible with TYPE I/II.
• Controllable from direct micro-computer output.
• Available to reduce substrate-area because of high integration and smal...

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