HA12207

HA12207NT Audio Signal Processor for Cassette Deck ADE-207-197B (Z) 3rd Edition Jun. 1999 Description HA12207NT is silicon monolithic bipolar IC providing PB equalizer, REC equalizer system and each electronic control switch in one chip. Functions PB equalizer REC equalizer REC MUTE REC head return switch × 2 channel × 2 channel Each electronic control switch to change REC/PB etc. Features REC equalizer is very small number of external parts, built-in 2 types of frequency characteristics. PB equalizer circuit built-in. REC /PB of high speed mode are possible with TYPE 1(Normal tape). Controllable from direct micro-computer output. Available to reduce substrate-area because of high integration and small external parts. As the pins arrangement resembles HA12185NT, it can design the board that is replaced with HA12185NT. HA12207NT Pin Description, Equivalent Circuit (VCC = 10.5V, Vref = 5.6V, Ta = 25°C, No signal, The value in the table show typical value.) Pin No. 1 2 Pin Name VCC RECOUT (L) Note V = VCC V = Vref VCC Equivalent Circuit Pin Description VCC pin REC-EQ output GND 3 4 RECOUT (R) REC-RETURN V = Vref V ’= Vref VCC I REC return V 5 pin, 6 pin 4 V’ I GND 5 6 7 PB-IN B (L) PB-IN B (R) VREF V = Vref V’ = VCC / 2 PB B Deck input Reference + – PB-IN 10k V 10k GND V' VCC 8 PB-IN A (L) V = Vref VCC PB A deck input V 9 PB-IN A (R) Rev.3, Jun. 1999, page 2 of 27 HA12207NT Pin Description, Equivalent Circuit (VCC = 10.5V, Vref ...