HA12215 Hitachi Semiconductor, HA12215 Datasheet - Page 4

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

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