Description
HA12173 series are silicon monolithic bipolar IC providing Dolby noise reduction system
, music sensor and PB equalizer system in one chip.
PB equalizer
Dolby B/C-NR
Music sensor × 2 channel × 2 channel × 1 channel
Features
- Different type of PB equalizer characteristics selection (normal/chrome or metal) is available with fully electronic control switching built-in.
- 2 type of input selection (RADIO/TAPE) is available.
- Changeable to Forward, Reverse-mode for PB head with fully electronic control switching built-in.
- Available to change music sensing level by external resistor.
- Music sensing level selection is available with fully electronic control switching built-in.
HA1-217.pdf