HA12226F Datasheet, PDF (4/84 Pages) Hitachi Semiconductor – Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System)

HA12226F/HA12227F
Pin Description, Equivalent Circuit (cont.)
Pin No.
3
(V_CC = 12 V, A system of single supply voltage, Ta = 25°C, No Signal, The value in the show typical value.)
Terminal Name
Note
Equivalent Circuit
Pin Description
PBOUT (R)
V = V_CC / 2
V_CC
PB output
V
40
PBOUT (L)
4
RECOUT (R)
39
RECOUT (L)
7
EQOUT (R)
36
EQOUT (L)
28
MAOUT
8
ROUT (R)
35
ROUT (L)
52
ABO (R)
R1 = 15 k
R2 = 12 k
V = V_CC / 2
R1 R2
V
GND
REC output
REC equalizer output
MS Amp. output *¹
Input Amp. output
V_CC ^{Time constant pin for PB}
equalizer (70µ)
47
ABO (L)
6
BOOST (R)
R1 = 4.8 k
R2 = 4.8 k
V = V_CC / 2
37
BOOST (L)
32
BIAS (C)
V = V_CC − 0.7 V
GND
Time constant pin for low
boost
V_CC
REC bias current output
33
21
50
31, 45, 54
BIAS (N)
V_CC
GND
NC
V = V_CC
V=0V
No connection
V
Power supply
GND pin
No connection
Rev.6.00 Jun 15, 2005 page 4 of 83