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參數(shù)資料
| 型號： | HA12209 |
| 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)： | 12/49頁 |
| 文件大?。?/td> | 279K |
| 代理商： | HA12209 |
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HA12209F
Rev.2, Jun. 1999, page 12 of 49
Music Sensor Output (MSOUT)
As for internal circuit of music sensor block, music sensor out pin is connected to the collector of NPN type
directly, output level will be “high” when sensing no signal. And output level will be “l(fā)ow” when sensing
signal.
Connection with microcomputer, it is requested to use external pull up resistor (R
L
= 10k to 22k
)
Note:
Supply voltage of MSOUT pin must be less than V
CC
voltage.
The Tolerances of External Components
For Dolby NR precision securing, please use external components shown at figure 7.
If leak-current are a few electrolytic-capacitor, it can be applicable to C2 and C15.
39
C2
0.1
μ
±10%
C15
0.1
μ
±10%
R1
33k
±2%
1
4
BIAS1
DET (L)
HA12209
DET (R)
R :
C : F
Unit
Figure 7 Tolerance of External Components
Low-Boost
EQOUT
CEX3
0.47
μ
CEX4
0.47
μ
REX3
5.1k
+
EQIN
Vin
GND
REX2
6.8k
R :
C : F
Unit
REC EQ
+
CEX2
2.2
μ
REX1
20k
+
Figure 8 Example of Low Boost Circuit
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HA12209F | Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System) |
| HA12211 | Audio Signal Processor for Cassette Deck (Deck 1 Chip) |
| HA12211NT | Audio Signal Processor for Cassette Deck (Deck 1 Chip) |
| HA12215 | HEATSHRINK, 1/8" ALPHA, FIT 221 1/8 |
| HA12215F | Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HA12209F | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System) |
| HA12211 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Audio Signal Processor for Cassette Deck (Deck 1 Chip) |
| HA12211NT | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Audio Signal Processor for Cassette Deck (Deck 1 Chip) |
| HA12212F | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Audio Signal Processor for Car Deck(Decode only Dolby B-type NR with PB Amp.) |
| HA12215 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System) |
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