HA12203NT Datasheet, PDF (3/97 Pages) Hitachi Semiconductor – Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System)

HA12203NT/HA12204NT
Pin Description, Equivalent Circuit
Pin No. Terminal Name
2
AIN (R)
(V_CC = ±7 V, Ta = 25ºC, No Signal, The value in the show typical value.)
Note
V = GND
Equivalent Circuit
Pin Description
PB A Deck input
41
AIN (L)
4
BIN (R)
39
BIN (L)
6
RIN (R)
37
RIN (L)
10
EQIN (R)
33
EQIN (L)
7
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
36
DET (L)
5
BIAS1
V = V_EE+0.6V
V_EE
Dolby bias current
input
38
BIAS2
V
V = V +1.3V
EE
V
V_EE
REC equalizer bias
current input
V_EE
Rev.3, Jun. 1999, page 3 of 97