HA12209F Datasheet, PDF (9/49 Pages) Hitachi Semiconductor – Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System)

HA12209F
Operating Mode Control
HA12209F provides fully electronic switching circuits. And each operating mode control is controlled by
parallel data (DC voltage).
Table 2 Control Voltage
Pin No.
Lo
Hi
Unit
10, 11, 12, 14, 16, –0.2 to 1.0
4.0 to 5.3
V
17, 19, 20, 21
Test Condition
Input Pin
Measure
Note:
1. Each pins are on pulled down with 100kΩ internal resistor. Therefore, it will be low-level when
each pins are open.
2. Over shoot level and under shoot level of input signal must be the standardized.
(High: 5.3V, Low: –0.2V)
3. For reduction of pop noise, connect 1µF to 22µF capacitor with mode control pins. But it is
impossible to reduce completely in regard to Line mute, therefore, use external mute at the same
time.
Input Block Diagram and Level Diagram
MS
REF
300mVrms
5.7dB
REC
PB
FLAT
AIN
(120µ)
300mVrms
21.3dB
PB
0dB
BIN
25.9mVrms
70µs
REC
300mVrms
DOLBY
B-NR
PB/REC=0dB/17dB
12k
15k
ABO
CEX1
42.4mVrms
RIN
Note: The each level shown above is typical value when offering PBOUT level to PBOUT pin.
Figure 2 Input Block Diagram
PBOUT
580mVrms
RECOUT
300mVrms
Unit R : Ω
C:F
Rev.2, Jun. 1999, page 9 of 49