HA12215 Hitachi Semiconductor, HA12215 Datasheet - Page 10

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

HA12215F
Operating Mode Control
HA12215F provide fully electronic switching circuits. And each operating mode control is controlled by
parallel data (DC voltage).
Table 2
Pin No.
15, 16, 17, 18,
20, 22, 23, 25
19, 24
Notes: 1. Each pins are on pulled down with 100 k
Input Block Diagram and Level Diagram
Rev.5, Oct. 1999, page 10 of 69
AIN
BIN
The each level shown above is typical value
when offering PBOUT level to PBOUT pin.
2. Over shoot level and under shoot level of input signal must be the standardized (High: V
3. For reduction of pop noise, connect 1 F to 22 F capacitor with mode control pins.
Therefore, it will be low-level when each pins are open.
But pin 24 is mid-level when it is open.
Low: –0.2 V).
But it is impossible to reduce completely in regard to Line mute, therefore, use external mute at
the same time.
25.9mVrms
Control Voltage
Lo
–0.2 to 1.0
–0.2 to 1.0
21.3dB
300mVrms
4700pF
12k
C2
R3
Mid
—
2.0 to 3.0
(120 )
Figure 2 Input Block Diagram
FLAT
70 s
R4
15k
25.5mVrms
200mVrms
0dB
0.1 F
RIN
15k
C1
R1
MS
300mVrms
Hi
4.0 to V
4.0 to V
PB
internal resistor.
REC
PASS
PB/REC,
PASS=0dB/21.4dB
CC
CC
R2
2.2k
PASS
0.1 F
300mVrms
C3
Unit
V
V
Dolby
B-NR
REF
ALC
300mVrms
REC
PB
Test Condition
PASS/REC,
PB=5.7dB/5.7dB
Input Pin
Measure
PBOUT
580mVrms
RECOUT
300mVrms
CC
,