Datasheet Summary
HA12134A, HA12135A, HA12136A
Dolby B-Type Noise Reduction System
ADE-207-016B (Z) 3rd Edition Jun. 1999 Description
The HA12134A, HA12135A, HA12136A are silicon monolithic bipolar IC series providing dual channel Dolby B-type noise reduction system- in one chip. The circuit is used primarily to reduce the level of background noise introduced during recording and playback of audio signals on magnetic tape. HA12134A series provide the following functions and Features
.
Functions
- Dual Dolby B-type NR processor
- NR ON/OFF control switch.
- Record (encode)/playback (decode) control switch.
Features
- Separate record/playback input and output. Unprocessed signal output available in the...