HA12215 Hitachi Semiconductor, HA12215 Datasheet - Page 16

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

HA12215F
ALC Operation Level Necessary
ALC operation level is variable to pin 12 bias (ALC-CAL: 0 to 5 V), and its range is ±4.0 dB.
Unnecessary, pin 12 is unforced.
Rev.5, Oct. 1999, page 16 of 69
Input
15k
R1
0.1
R2
2.2k
Figure 13 ALC-CAL Characteristics
C2
RIN
Figure 12 ALC Block Diagram
56
55
25.5mV
ALC
ALC-CAL = 0V
ALC-CAL = 5V
21.4dB
ALC
RIN
13
8
9
ROUT
ALCIN
ALCDET
300mV
C4
Output
R12
C12
V
CC