HA12215F Datasheet, PDF (5/69 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.
21
49
50
Terminal Name
V
CC
GND
V_EE
Note
V=V
CC
V = 0V
V = V_EE
Equivalent Circuit
45, 54 NC
No connection
15
ALC ON/OFF
I = 50 µA
V
I
22 k
Pin Description
Power supply
GND pin
Negative power
supply
No connection
Mode control input
16
PB A/B
17
A 120/70
18
NORM/HIGH
19
B NORM/CROM/
METAL
20
BIAS ON/OFF
22
RM ON/OFF
23
NR ON/OFF
25
LM ON/OFF
24
REC/PB/PASS
26
MSOUT
I = 0 µA
100 k
GND
2.5 V
+
−
Mode control input
100 k
100 k
22 k
V
V
V_CC
I
MS output (to MPU) *¹
MSGND
V_EE
Note: 1. MS: Music Sensor
Rev.5, Oct. 1999, page 5 of 69