HA12215 Hitachi Semiconductor, HA12215 Datasheet - Page 3

• Manufacturer Part Number: HA12215
• Description: Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System)
• Manufacturer: Hitachi Semiconductor

Pin Description, Equivalent Circuit (V
Ta = 25°C, No Signal, The value in the show typical value.)
Pin No.
51
48
53
46
56
43
5
38
1
42
2
41
Terminal Name
AIN (R)
AIN (L)
BIN (R)
BIN (L)
RIN (R)
RIN (L)
EQIN (R)
EQIN (L)
DET (R)
DET (L)
BIAS1
BIAS2
Note
V = GND
V = GND
V = GND
V = GND
V = V
V = V
V = V
EE
EE
EE
+2.7V
+0.6V
+1.3V
Equivalent Circuit
CC
V
V
= ±7 V, A system of split supply voltage,
V
V
100k
GND
V
V
EE
V
V
Rev.5, Oct. 1999, page 3 of 69
EE
CC
EE
Pin Description
PB A Deck input
PB B Deck input
REC input
REC equalizer input
Time constant pin for
Dolby-NR
Dolby bias current
input
REC equalizer bias
current input
HA12215F