HA12215 Hitachi Semiconductor, HA12215 Datasheet - Page 6

• 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.
10
11
12
14
13
27
9
34
30
29
55
44
Note:
Rev.5, Oct. 1999, page 6 of 69
1. MS: Music Sensor
Terminal Name
GPCAL
RECCAL
ALCCAL
MSDET
ALCDET
MSIN
ALCIN (R)
ALCIN (L)
MAI
MS GND
ALC (R)
ALC (L)
Note
R = 110 k
R = 110 k
R = 140 k
n = 6
n = 2
R = 50 k
R = 100 k
V = GND
I = ±100 A
V = GND
Equivalent Circuit
CC
= ±7 V, A system of split supply voltage,
V
V
R
100 k
0 A
8.2 k
R
MAOUT
n
GND
I
V
CC
GND
V
V
2.5 V
CC
V
V
CC
EE
Pin Description
GP gain calibration
terminal
REC gain calibration
terminal
ALC operation level
calibration terminal
Time constant pin for
MS *
MS input *
MS Amp. input *
MS output voltage
level control pin *
Variable impedance
for attenuation
1
1
1
1