HA12230

HA12230NT Audio Signal Processor for Cassette Deck ADE-207-322E (Z) 6th Edition Nov. 2000 Description HA12230NT is silicon monolithic bipolar IC providing PB equalizer, REC equalizer system and each electronic control switch in one chip. Functions PB equalizer REC equalizer × 2 channel × 2 channel MS use Mixing Amp. Each electronic control switch to change tape type and mute etc. REC mute REC head return switch Line Amp. Line mute Features REC equalizer is very small number of external parts, built-in 2 types of frequency characteristics PB equalizer circuit built-in REC/PB are possible with TYPE I/II Controllable from direct micro-computer output Available to reduce substrate-area because of high integration and small external parts HA12230NT Pin Description, Equivalent Circuit (VCC = 12 V, Ta = 25°C, No signal, The value in the table show typical value.) Pin No. 17 16 Pin Name VCC RECOUT(L) Note V = VCC V = VCC/2 VCC Equivalent Circuit Pin Description VCC pin REC-EQ output GND 15 10 1 30 RECOUT(R) MAOUT VREF REC-RETURN V = V’ = VCC/2 VCC MS Amp. output Reference REC return V pin 3, pin 29 I GND , 30 V 29 3 28 BIN(L) BIN(R) AIN(L) V = VCC/2 VCC PB B deck input PB A deck input PB-NF 4 11 AIN(R) MAI V = VCC/2 MAOUT 100 k V 45 k VCC/2 VCC MS Amp. input Rev.6, Nov. 2000, page 2 of 32 HA12230NT Pin Description, Equivalent Circuit (VCC = 12 V, Ta = 25°C, No signal, The value in the table show typical value.) (cont) Pin No. 23 Pin Name...