參數(shù)資料
型號(hào)： HA12203NT
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(hào)處理器卡座（杜比B型錄音系統(tǒng)星期日）
文件頁(yè)數(shù)： 10/97頁(yè)
文件大?。?/td> 687K
代理商： HA12203NT
HA12203NT/HA12204NT
Rev.3, Jun. 1999, page 10 of 97
Reference Voltage
The reference voltage are provided for the left channel and the right channel separately. The block diagram
is shown as figure 1.
V
CC
V
CC
V
EE
V
EE
GND
L channel reference
R channel reference
Music sensor reference
+
–
+
–
+
–
22
42
1
Figure 1 Reference Voltage
Operating Mode Control
HA12203NT / 204NT provide fully electronic switching circuits. And each operating mode control is
controlled by parallel data (DC voltage).
Table 2
Control Voltage
Pin No.
Lo
Mid
Hi
Unit
Test Condition
12, 13, 14, 16,
17, 18, 20
– 0.2 to 1.0
—
4.0 to V
CC
V
Input Pin
V
Measure
15, 19
– 0.2 to 1.0
2.0 to 3.0
4.0 to V
CC
V
Notes: 1. Each pins are on pulled down with 100 k
internal resistor.
Therefore, it will be low-level when each pins are open.
But 19 pin are mid-level when it is open.
2. Over shoot level and under shoot level of input signal must be the standardized (High: V
CC
, 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.
相關(guān)PDF資料
PDF描述
HA12204NT Audio Signal Processor for Cassette Deck(音頻信號(hào)處理器)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HA12203NT/HA12204NT 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:
HA12204NT 制造商:HITACHI 制造商全稱(chēng):Hitachi Semiconductor 功能描述:Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System)
HA12206 制造商:HITACHI 制造商全稱(chēng):Hitachi Semiconductor 功能描述:Audio Signal Processor for Cassette Deck
HA12206NT 制造商:HITACHI 制造商全稱(chēng):Hitachi Semiconductor 功能描述:Audio Signal Processor for Cassette Deck
HA12207 制造商:HITACHI 制造商全稱(chēng):Hitachi Semiconductor 功能描述:Audio Signal Processor for Cassette Deck
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