HA12230 Datasheet | Hitachi Semiconductor

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-puter 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 Equivalent Circuit Pin Description VCC pin REC-EQ output 15 10 1 30 RECOUT(R) MAOUT VREF REC-RETURN V = V’ = VCC/2 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...