HA12177

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. 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. 4 type of PB-out level. Available to allow common PCB designs with HA12163 series. * Dolby is a trademark of Dolby Laboratories Licensing Corporation. A license from Dolby Laboratories Licensing Corporation is required for the use of this IC. HA12173 Series Ordering Information Operating voltage range* Products HA12173 HA12174 HA12175 HA12177 Note: PB-OUT level 300 mVrms 450 mVrms 580 mVrms 775 mVrms REC-OUT level 300 mVrms 300 mVrms 300 mVrms 300 mVrms Dolby-level 300 mVrms 300 mVrms 300 mVrms 300 mVrms Min 7.0V...