參數(shù)資料
型號: AK4671EG
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: Stereo CODEC with MIC/RCV/HP-AMP
中文描述: 立體聲編解碼器麥克風/垃圾車/惠普腺苷
文件頁數(shù): 59/164頁
文件大小: 1792K
代理商: AK4671EG
[AK4671]
MS0666-E-00
2007/10
- 59 -
MIC Power
When PMMP bit = “1”, the MPWR pin supplies power for the microphone. This output voltage is typically 0.8 x AVDD
and the load resistance is minimum 0.5k
Ω
. In case of using two sets of stereo mic, the load resistance is minimum 2k
Ω
for
each channel. Any capacitor must not be connected directly to the MPWR pin (
Figure 55
).
PMMP bit
MPWR pin
0
1
Table 20. MIC Power
MPWR pin
(default)
Hi-Z
Output
Ω
MIC Power
Microphone
LIN1 pin
Microphone
RIN1 pin
Microphone
LIN2 pin
Microphone
RIN2 pin
Ω
Ω
Ω
Figure 55. MIC Block Circuit
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