HA12215F Datasheet, PDF (3/69 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.)
Pin No. Terminal Name Note
51
AIN (R)
V = GND
Equivalent Circuit
Pin Description
PB A Deck input
48
AIN (L)
53
BIN (R)
46
BIN (L)
56
RIN (R)
43
RIN (L)
5
EQIN (R)
38
EQIN (L)
1
DET (R)
V
100k
V = GND
V = GND
V = GND
V = V +2.7V
EE
GND
PB B Deck input
REC input
REC equalizer input
V_CC Time constant pin for
Dolby-NR
V
42
DET (L)
2
BIAS1
V = V_EE+0.6V
V_EE
Dolby bias current
input
41
BIAS2
V
V = V +1.3V
EE
V
V_EE
REC equalizer bias
current input
V_EE
Rev.5, Oct. 1999, page 3 of 69