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HA12161FP - Dolby B- and C-Type Noise Reduction

General Description

HA12141/142NT, HA12170NT, HA12161/162FP are silicon monolithic bipolar IC series providing dual channel Dolby B- and C-type noise reduction

in one chip.

Dual Dolby B/C-type NR processor NR OFF/B/C control switch MPX by-pass / Encode / Decode (MPX OFF / R

Key Features

  • Low external parts count.
  • R-C spectrum skewing network using passive component.
  • External capacitors are E-3 series (small values).
  • Several time constant capacitors built into the IC.
  • Separate REC/PB input and output. Unprocessed signal output available in the encode and decode modes.
  • Common PCB pattern is available with HA12134A series (Dolby B NR), because these ICs offer similar pin layout.
  • 3 type PB-out level (300 mV, 580 mV, 7.

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Full PDF Text Transcription (Reference)

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HA12141NT, HA12142NT, HA12170NT, HA12161FP, HA12162FP Dolby B- and C-Type Noise Reduction System ADE-207-036B (Z) 3rd Edition Jun. 1999 Description HA12141/142NT, HA12170NT, HA12161/162FP are silicon monolithic bipolar IC series providing dual channel Dolby B- and C-type noise reduction* in one chip. Functions • Dual Dolby B/C-type NR processor • NR OFF/B/C control switch • MPX by-pass / Encode / Decode (MPX OFF / REC / PB) control switch • MPX Filter Drive Circuit Features • Low external parts count • R-C spectrum skewing network using passive component • External capacitors are E-3 series (small values) • Several time constant capacitors built into the IC • Separate REC/PB input and output. Unprocessed signal output available in the encode and decode modes.