HA12231 Datasheet | Hitachi Semiconductor

Description HA12231FP is silicon monolithic bipolar IC providing PB equalizer system and music sensor system in one chip. Functions - - - - PB equalizer Music sensor Line amp. Line mute × 2 channel × 1 channel × 2 channel × 2 channel Features - - - - - - No use external parts for PB equalizer. (Fixed characteristics built-in) Available to change music sensing level by external resistor. Available to change frequency response of music sensor by external capacitor. Different type of PB equalizer characteristics selection (120 µs/70 µs) is available. Line mute ON/OFF is avalable. This IC is strong for a cellular phone noise. Ordering Information Functions Product HA12231FP Package FP-20DA PBOUT-Level 450 m Vrms PB-EQ r Music Sensor r Mute r HA12231FP Pin Description , Equivalent Circuit (VCC = 9 V, A system of single supply voltage, Ta = 25°C, No Signal, The value in the table shows typical value.) Pin No. 16 Pin Name TAI(L) Note V = VCC/2 Equivalent Circuit Description Tape input V 100 k VCC/2 5 14 TAI(R) RIP V = VCC/2 Ripple filter MS DET V = VCC Time constant pin for rectifier PBOUT(L) V = VCC/2 PB output 6 1 PBOUT(R) VREF V = VCC/2 Reference output 17...