HA12179F Datasheet, PDF (1/40 Pages) Hitachi Semiconductor – Audio Signal Processer for Car Deck and Cassette Deck(Dolby B-type NR with PB Amp)

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.