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HA12173 - Audio Signal Processor

Download the HA12173 datasheet PDF. This datasheet also covers the HA1 variant, as both devices belong to the same audio signal processor family and are provided as variant models within a single manufacturer datasheet.

General Description

HA12173 series are silicon monolithic bipolar IC providing Dolby noise reduction system

, music sensor and PB equalizer system in one chip.

PB equalizer Dolby B/C-NR Music sensor × 2 channel × 2 channel × 1 channel

Key Features

  • Different type of PB equalizer characteristics selection (normal/chrome or metal) is available with fully electronic control switching built-in.
  • 2 type of input selection (RADIO/TAPE) is available.
  • Changeable to Forward, Reverse-mode for PB head with fully electronic control switching built-in.
  • Available to change music sensing level by external resistor.
  • Music sensing level selection is available with fully electronic control switching built-in.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (HA1-217.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by Hitachi Semiconductor (now Renesas)

Part Number Description
HA12170NT Dolby B- and C-Type Noise Reduction
HA12174 Audio Signal Processor
HA12175 Audio Signal Processor
HA12177 Audio Signal Processor
HA12179F Audio Signal Processer

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.

View original datasheet text
HA12173 Series Audio Signal Processor for Car Deck and Cassette Deck (Dolby B/C-type NR with PB Amp) ADE-204-016 1st Edition Nov. 1992 Description HA12173 series are silicon monolithic bipolar IC providing Dolby noise reduction system*, music sensor and PB equalizer system in one chip. Functions • PB equalizer • Dolby B/C-NR • Music sensor × 2 channel × 2 channel × 1 channel Features • Different type of PB equalizer characteristics selection (normal/chrome or metal) is available with fully electronic control switching built-in. • 2 type of input selection (RADIO/TAPE) is available. • Changeable to Forward, Reverse-mode for PB head with fully electronic control switching built-in. • Available to change music sensing level by external resistor.