HA12232

HA12232FP Audio Signal Pre-Amp. for Car Deck ADE-207-328 (Z) Target Specifications 1st Edition Sep. 2000 Description HA12232FP is audio signal pre-amp. LSI providing PB equalizer op-amp. in one chip. Function PB equalizer Vref buffer × 2 channel × 1 channel Features Built-in referential voltage (VREF) for PB equalizer decreases external components. This IC is low noise. This IC is strong for a cellular phone noise. Operating Voltage Range Product HA12232FP Min 6.5 Max 15 Unit V Note: This IC is designed to operate on single supply. HA12232FP Pin Description, Equivalent Circuit (VCC = 9 V single supply, Ta = 25°C, No Signal, The value in the table shows typical value.) Pin No. 7 Pin Name RIP Note V = VCC/2 Equivalent Circuit VCC Description Ripple filter V GND 1 VREF V = VCC/2 VCC Reference output V 1 GND 10 EQOUT(L) V = VCC/2 VCC Equalizer output V GND 5 2 EQOUT(R) PBIN(R)  PB equalizer input PBIN NFI 13 3 12 PBIN(L) NFI(R) NFI(L) V = VCC/2 Equalizer output for time constant Rev.1, Sep. 2000, page 2 of 14 HA12232FP Pin Description, Equivalent Circuit (VCC = 9 V single supply, Ta = 25°C, No Signal, The value in the table shows typical value.) (cont.) Pin No. 8 14 4 6 9 11 Pin Name VCC GND NC Note    Equivalent Circuit Description Power supply GND pin Rev.1, Sep. 2000, page 3 of 14 HA12232FP Block Diagram EQOUT(L) R6 180 C3 0.01µ R5 14 GND VCC R4 12k 13 PBIN(L) 12 NFI(L) 330k 11 NC 10 9 NC 8 − + + PBIN(R) − NFI(R) VREF...