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HA12179F Datasheet

Part Number HA12179F
Manufacturers Hitachi Semiconductor
Logo Hitachi Semiconductor
Description Audio Signal Processer
Datasheet HA12179F DatasheetHA12179F Datasheet (PDF)

HA12179F Audio Signal Processer for Car Deck and Cassette Deck (Dolby B-type NR with PB Amp) ADE-207-136 1st Edition Apr. 1994 Description HA12179F is silicon monolithic bipolar IC providing Dolby noise reduction system*, line mute, music sensor and PB equalizer system in one chip. Functions • Line mute • PB equalizer • Dolby B-NR • Music sensor × 2 channel × 2 channel × 2 channel × 1 channel Features • Different type of PB equalizer characteristics selection (normal/chrome or metal) is avail.

  HA12179F   HA12179F






Audio Signal Processer

HA12179F Audio Signal Processer for Car Deck and Cassette Deck (Dolby B-type NR with PB Amp) ADE-207-136 1st Edition Apr. 1994 Description HA12179F is silicon monolithic bipolar IC providing Dolby noise reduction system*, line mute, music sensor and PB equalizer system in one chip. Functions • Line mute • PB equalizer • Dolby B-NR • Music sensor × 2 channel × 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. • Line mute ON/OFF is available. • Changeable to Foward, 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. • Available to change frequency response of music sensor. • NR-ON/OFF and REC/PB fully electronic control switching built-in. • Pin compatible of HA12163 series except for 4 and 39 Pins. * Dolby is a trademark of Dolby Laboratories Licensing Corporation. A license from Dolby Laboratories Licensing Corporation is required for the use of this IC. HA12179F Ordering Information Package HA12179F QFP 56 PB-OUT level 387.5 mVrms REC OUT level 300 mVrms Dolby level 300 mVrms PB-OUT level above shown is typical value when adjusting Dolby level at Rec-out with NR-off mode. Rev.1, Apr. 1994, page 2 of 40 LINE OUT (L) RECOUT (L) PB OUT (L) + 41 MUTE 27 M.


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