Description
HA12209F is silicon monolithic bipolar IC providing Dolby noise reduction system
, music sensor system, REC equalizer system and each electronic control switch in one chip.
Dolby B-NR
REC equalizer
Music sensor × 2 channel × 2 channel × 1 channel
Each electronic control switch to change REC equalizer, bias, etc.
Features
- REC equalizer is very small number of external parts and have 4 types of frequency characteristics built-in.
- 2 types of input for PB, 1 type of input for REC.
- 70µ-PB equalizer changing system built-in.
- Dolby NR with dubbing double cassette decks. Unprocessed signal output available from recording out terminals during PB mode.
- Provide stable music sensor system, available to design music sensing time and level.
- Controllable from direct m.
HA12209F_HitachiSemiconductor.pdf
