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參數(shù)資料
| 型號： | AK4564VQ |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | 16BIT CODEC WITH BUILT-IN ALC AND MIC/HP/SPK-AMP |
| 中文描述： | 16位編解碼器，配有ALC和麥克風(fēng)/惠普/胰腎聯(lián)合移植腺苷 |
| 文件頁數(shù)： | 17/48頁 |
| 文件大?。?/td> | 382K |
| 代理商： | AK4564VQ |
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ASAHI KASEI
[AK4564]
MS0140-E-01
2002/07
- 17 -
n
MIC BLOCK
1. Pre- Amp
Pre-Amp includes selector, Internal MIC or External MIC Mode can be selected by INT/EXT bit. The Pre-Amp is
non-inverting amplifier and internally biased to VCOM voltage with 100k
(typ.). Gain (1+Rf/Ri) of the Pre-Amp is
adjusted by external resistors and should be a range of +18
～
+30dB.
An external capacitor is needed to cancel DC gain. The Cut-off frequency is determined by an external resistor (Ri) and
a capacitor (C1).
A capacitor of 100pF (C2) should be connected to prevent oscillation of Pre-Amp.
100pF(C2)
Pre-Amp
INT
-
+
Rf
Ri
+
C1
EXT
Figure 12. Pre-Amp
2. Power Supply for MIC
The Power Supply for microphone device is supplied from MPWR pin. MPWR pin can supply the current up to 3mA.
When the output current is 0mA, the output voltage is typically (MVDD – 1.2) V at MVDD=2.8V and typically
(MVDD – 1.4) V at MVDD=4.5V. When the output current is 3mA, the output voltage is typically (MVDD – 1.5) V at
MVDD=2.8V and typically (MVDD – 1.7) V at MVDD=4.5V. When MIC bit is “0”, the output current is not supplied.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AKD4564 | 16BIT CODEC WITH BUILT-IN ALC AND MIC/HP/SPK-AMP |
| AK4565 | LOW POWER 20BIT CODEC WITH BUILT IN ALC |
| AK4565VF | LOW POWER 20BIT CODEC WITH BUILT IN ALC |
| AK4566 | 20bit Stereo CODEC with built-in IPGA & HP-AMP |
| AK4566VN | 20bit Stereo CODEC with built-in IPGA & HP-AMP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4565 | 制造商:AKM 制造商全稱:AKM 功能描述:LOW POWER 20BIT CODEC WITH BUILT IN ALC |
| AK4565VF | 制造商:AKM 制造商全稱:AKM 功能描述:LOW POWER 20BIT CODEC WITH BUILT IN ALC |
| AK4566 | 制造商:AKM 制造商全稱:AKM 功能描述:20bit Stereo CODEC with built-in IPGA & HP-AMP |
| AK4566VN | 制造商:AKM 制造商全稱:AKM 功能描述:20bit Stereo CODEC with built-in IPGA & HP-AMP |
| AK4568AER | 功能描述:IC CODEC LOW POWER 制造商:akm semiconductor inc. 系列:* 零件狀態(tài):上次購買時間 標(biāo)準(zhǔn)包裝:1,000 |
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