HA12219NT

HA12219NT Audio Signal Processor for Cassette Deck ADE-207-258A 2nd Edition July 1998 Description HA12219NT is silicon monolithic bipolar IC providing PB equalizer, REC equalizer system and each electronic control switch in one chip. Functions PB equalizer × 2 channel REC equalizer × 2 channel Each electronic control switch to change REC/PB etc. REC MUTE REC head return switch 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. HA12219NT Pin Description, Equivalent Circuit (VCC = 12 V, Vref = 5.6 V, Ta = 25°C, No signal, The value in the table show typical value.) Pin No. 1 2 Pin Name VCC REC-OUT(L) Note V = VCC V = Vref VCC Equivalent Circuit Pin Description VCC pin REC-EQ output GND 3 4 REC-OUT(R) REC-RETURN V = Vref V’ = Vref VCC I REC return V 5 pin, 6 pin I GND , 4 V 5 6 7 PB-IN B(L) PB-IN B(R) VREF V = Vref V’ = VCC / 2 PB B deck input VCC Reference 10 k V 10 k GND 8 PB-IN A(L) V = Vref VCC PB A deck input , V PB-NF 9 PB-IN A(R) Rev.2, Jul. 1998, page 2 of 29 HA12219NT Pin Description, Equivalent Circuit (VCC = 12 V, Vref = 5.6 V, Ta = 25°C, No signal, The value in the table show typical value.) (cont) Pin No. 12 Pin Name PB-NF(R) Note PB-IN = Vref Equivalent Circuit VCC...