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參數(shù)資料
| 型號(hào)： | MM1102 |
| 廠商： | MITSUMI ELECTRIC |
| 英文描述： | Monolithic IC |
| 中文描述： | 單片集成電路 |
| 文件頁數(shù)： | 7/10頁 |
| 文件大?。?/td> | 268K |
| 代理商： | MM1102 |
MITSUMI
Compander IC MM1102
About Application Circuits
1. Mike amp
The compressor unit mike amp is exposed to circuits outside the IC via positive and negative input pins.
The positive input pin is connected to C.Vref by a bias resistance of 100k
, so that no external bias is
needed.
he internal configuration appears in Fig. 1. When pin 4 is open the gain is lowest, and an input voltage of
approx. 13.5mVrms is the reference level. When the external resistance is 0
, the gain is maximum. The
internal configuration appears in Fig. 1.
2. Rectifier circuit unit (rectifier)
The product of the external capacitance and the internal resistance (10k
) determines the time constants
for the attack and release times.
3. Compressor amp
The compressor amp requires that the DC gain be unity and the AC gain be infinite. In order to satisfy this
requirement, AC feedback is eliminated and only DC feedback is used. In order that only DC feedback be
present, a capacitor to eliminate AC components is connected to pin 8. The cutoff frequency is determined
by the product with the internal resistance (10k
).
4. Compressor data amp
The data amp uses an inverting amp. The internal input resistance is 100k
, and the DC bias voltage is
1.3V. The compressor mute switch at pin 15 is used to switch between data signals and audio signals.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MM1102F | 制造商:Ohmite Mfg Co 功能描述: |
| MM1104 | 制造商:MITSUMI 制造商全稱:Mitsumi Electronics, Corp. 功能描述:Monolithic IC |
| MM1104AF | 制造商:MITSUMI 制造商全稱:Mitsumi Electronics, Corp. 功能描述:Monolithic IC |
| MM1104BF | 制造商:MITSUMI 制造商全稱:Mitsumi Electronics, Corp. 功能描述:Monolithic IC |
| MM1104CF | 制造商:MITSUMI 制造商全稱:Mitsumi Electronics, Corp. 功能描述:Monolithic IC |
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