HA12215F Datasheet, PDF (4/69 Pages) Hitachi Semiconductor – Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System)

HA12215F
Pin Description, Equivalent Circuit (V_CC = ±7 V, A system of split supply voltage,
Ta = 25°C, No Signal, The value in the show typical value.) (cont)
Pin No. Terminal Name Note
3
PBOUT (R)
V = GND
Equivalent Circuit
Pin Description
V_CC
PB output
V
40
PBOUT (L)
4
RECOUT (R)
V = GND
39
RECOUT (L)
7
EQOUT (R)
V = GND
36
EQOUT (L)
28
MAOUT
V = GND
8
ROUT (R)
V = GND
35
ROUT (L)
52
ABO (R)
R1 = 15 k
R2 = 12 k
R1 R2
V
V_EE
REC output
REC equalizer output
MS Amp. output *¹
Input Amp. output
V_CC ^{Time constant pin for}
PB equalizer (70µ)
47
ABO (L)
6
BOOST (R)
R1 = 4.8 k
R2 = 4.8 k
37
BOOST (L)
31
BIAS (M)
V = V – 0.7V
CC
32
33
Note:
BIAS (C)
BIAS (N)
1. MS: Music Sensor
V_EE
Time constant pin for
low boost
V_CC
REC bias current
output
V
Rev.5, Oct. 1999, page 4 of 69