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參數(shù)資料
| 型號： | HA12209F |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System) |
| 中文描述： | 音頻信號處理器卡座（杜比B型錄音系統(tǒng)星期日） |
| 文件頁數(shù)： | 9/49頁 |
| 文件大?。?/td> | 279K |
| 代理商： | HA12209F |
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HA12209F
Rev.2, Jun. 1999, page 9 of 49
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
Test Condition
10, 11, 12, 14, 16,
17, 19, 20, 21
–0.2 to 1.0
4.0 to 5.3
V
Input Pin
Measure
Note:
1. Each pins are on pulled down with 100k
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 1
μ
F to 22
μ
F 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
AIN
BIN
RECOUT
300mVrms
300mVrms
300mVrms
REC
PB
300mVrms
21.3dB
0dB
PBOUT
580mVrms
RIN
42.4mVrms
ABO
Note: The each level shown above is typical value when offering PBOUT level to PBOUT pin.
25.9mVrms
CEX1
15k
12k
REC
PB
PB/REC=0dB/17dB
MS
REF
70
μ
s
FLAT
(120
μ
)
DOLBY
B-NR
5.7dB
R :
C : F
Unit
Figure 2 Input Block Diagram
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