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HA12215F Datasheet(PDF) 4 Page - Hitachi Semiconductor

Part No. HA12215F
Description  Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System)
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Manufacturer  HITACHI [Hitachi Semiconductor]
Direct Link  http://www.renesas.com/eng
Logo HITACHI - Hitachi Semiconductor

HA12215F Datasheet(HTML) 4 Page - Hitachi Semiconductor

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HA12215F
Rev.5, Oct. 1999, page 4 of 69
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.
Terminal Name
Note
Equivalent Circuit
Pin Description
3
PBOUT (R)
V = GND
VCC
VEE
V
PB output
40
PBOUT (L)
4
RECOUT (R)
V = GND
REC output
39
RECOUT (L)
7
EQOUT (R)
V = GND
REC equalizer output
36
EQOUT (L)
28
MAOUT
V = GND
MS Amp. output *
1
8
ROUT (R)
V = GND
Input Amp. output
35
ROUT (L)
52
ABO (R)
R1 = 15 k
R2 = 12 k
VCC
VEE
R2
R1
V
Time constant pin for
PB equalizer (70
µ)
47
ABO (L)
6
BOOST (R)
R1 = 4.8 k
R2 = 4.8 k
Time constant pin for
low boost
37
BOOST (L)
31
BIAS (M)
V = V
CC – 0.7V
VCC
V
REC bias current
output
32
BIAS (C)
33
BIAS (N)
Note:
1. MS: Music Sensor


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