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HA12155NT - Audio Signal Processor

General 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.

REC equalizer Dolby B/C NR Electronic volume Level Meter × 2 channel

Key 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 electrical volume).
  • Separate input selection SW and REC/PB SW.
  • Dolby noise reduction with dubbing cassette decks (Unprocessed signal output available from recording out terminals during PB mode).
  • Log-compressed level mete.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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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.