HA12215F Datasheet, PDF (6/69 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. Terminal Name Note
10
GPCAL
R = 110 kΩ
Equivalent Circuit
R
2.5 V
Pin Description
GP gain calibration
terminal
11
RECCAL
12
ALCCAL
14
MSDET
R = 110 kΩ
R = 140 kΩ
n=6
0 µA
n
REC gain calibration
terminal
ALC operation level
calibration terminal
V_CC
Time constant pin for
MS *¹
13
ALCDET
27
MSIN
n=2
R = 50 kΩ
9
ALCIN (R)
34
ALCIN (L)
30
MAI
R = 100 kΩ
V = GND
29
MS GND
I = ±100 µA
55
ALC (R)
V = GND
44
ALC (L)
Note: 1. MS: Music Sensor
V
R
V_EE
V_CC
MS input *¹
GND
MAOUT
V_CC
100 k
V
8.2 k
GND
I
V
MS Amp. input *¹
MS output voltage
level control pin *¹
Variable impedance
for attenuation
Rev.5, Oct. 1999, page 6 of 69