HA12206 Datasheet | Hitachi Semiconductor

Description HA12206NT is silicon monolithic bipolar IC providing music sensor system, ALC, REC equalizer system and each electronic control switch in one chip. Functions - REC equalizer - Line Amp. × 2 channel × 2 channel - ALC (Automatic Level Control) - MS (Music Sensor) - Each electronic control switch to change REC equalizer, bias, etc. - REC mute Features - REC equalizer is very small number of external parts, built-in 2 types of frequency characteristics. - Correspondence with normal position (TYPE I) / high position (TYPE II). - TYPE I / TYPE II and PB equalizer fully electronic control switching built-in. - Controllable from direct micro-puter output. - Available to reduce substrate-area because of high integration and small external parts. HA12206NT Pin Description , Equivalent Circuit (VCC = 7.0V, VEE = - 7.0V, Ta = 25°C, No signal, The value in the table show typical value.) Pin No. 2 Pin Name PB-Ain (R) Note V=0 Equivalent Circuit Pin Description A Deck PB input V 100k 29 4 27 5 26 9 22 12 3 PB-Ain (L) PB-Bin (R) PB-Bin (L) REC-in (R) REC-in (L) EQ-in (R) EQ-in (L) MIMS AB out (R) V=0 14.9k 10.6k V B Deck PB input REC input Equalizer input MS Gain control Time constant for NAB standard 28 6 AB out (L) ATT (R) V=0 Variable impedance for attenuation 25 7 ATT (L) RPOUT (R) REC or PB output RPOUT (L) Rev.3, Jun. 1999, page 2 of...