HA12206NT

HA12206NT Audio Signal Processor for Cassette Deck ADE-207-198B (Z) 3rd Edition Jun. 1999 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-computer 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 V Variable impedance for attenuation 25 7 ATT (L) RPOUT (R) VCC REC or PB output VEE 24 RPOUT (L) Rev.3, Jun. 1999, page 2 of 32 HA12206NT Pi...