Datasheet Summary
HA12155NT/HA12157NT
Audio Signal Processor for Cassette Deck (Dolby B/C-type NR with Recording System)
ADE-207-115C (Z) 4th Edition June 1997 Description
HA12155NT/HA12157NT is silicon monolithic bipolar IC providing Dolby noise reduction system- , electrical volume system, REC equalizer system and level meter system in one chip.
Functions
- REC equalizer
- Dolby B/C NR
- Electronic volume
- Level Meter × 2 channel × 2 channel × 2 channel × 2 channel
Features
- Inductor less REC equalizer is adjustable of its characteristics by external resistor
- Rec level is adjustable automatically with electrical volume which is built-in
- 3 type of input selection is available (one is by way of...