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12136AF - Dolby B-Type Noise Reduction System

General 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.

Key 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 encode and decode modes.
  • Reduction of external components count.
  • Small capacitor value for the reference voltage.
  • NR ON/OFF switching and REC/PB switching are provided internally.
  • 2-type package (DP-16, FP.

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Full PDF Text Transcription for 12136AF (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for 12136AF. For precise diagrams, and layout, please refer to the original PDF.

HA12134A, HA12135A, HA12136A Dolby B-Type Noise Reduction System ADE-207-016B (Z) 3rd Edition Jun. 1999 Description The HA12134A, HA12135A, HA12136A are silicon monolithi...

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999 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 encode and decode modes. • Reduction of

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