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參數(shù)資料
| 型號： | HA12215F |
| 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)： | 13/69頁 |
| 文件大小： | 389K |
| 代理商： | HA12215F |
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HA12215F
Rev.5, Oct. 1999, page 13 of 69
Music Sensor Output (MSOUT)
As for internal circuit of music sensor block, music sensor output 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
= 10 k
to 22 k
)
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 C5 and C23.
42
DET (L)
HA12215F
1
C5
0.1
μ
±
10%
DET (R)
V
EE
V
EE
C23
0.1
μ
±
10%
2
R5
33k
±
2%
BIAS1
Figure 7 Tolerance of External Components
Low-Boost
EQIN
BOOST
C9(C19)
0.47
μ
24.6dB
4.8k
4.8k
EQOUT
+
REC EQ
Figure 8 Example of Low Boost Circuit
External components shown figure 8 gives frequency response to take 6 dB boost. And cut off frequency
can request it, by C9 (C19).
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HA12216F | 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.) |
| HA12216F/HA12221FSERIES | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| HA12217F | 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.) |
| HA12218F | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Audio Signal Processor for Car Deck (Decode only Dolby B type NR with PB Amp.) |
| HA12219 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Audio Signal Processor for Cassette Deck |
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