ak4691 AKM Semiconductor, Inc., ak4691 Datasheet - Page 31
ak4691
Manufacturer Part Number
ak4691
Description
4ch Adc + 2ch Dac With Mic/hp/spk-amp
Manufacturer
AKM Semiconductor, Inc.
Datasheet
1.AK4691.pdf
(80 pages)
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2. Power Supply for MIC
MS0672-E-00
The Power Supply for microphone device is supplied from the MPWR pin. The MPWR pin can supply the current up to
4mA. When the output current is 0mA, the output voltage is typically (MVDD – 1.1) V at MVDD=3.0V and typically
(MVDD – 1.4) V at MVDD=4.5V. When the output current is 4mA, the output voltage is typically (MVDD – 1.3) V at
MVDD=3.0V and typically (MVDD – 1.5) V at MVDD=4.5V. When PMMP bit is “0”, the output current is not
supplied.
PMMP bit
MIC Power
0
1
Figure 22. MIC Block Circuit example
Pull-down to VSS1 with 5.3kΩ(typ.)
Table 16. MIC Power
MPWR pin
INTL1 pin
INTR1 pin
INTL2 pin
INTR2 pin
- 31 -
MPWR pin
Output
Microphone
Microphone
Microphone
Microphone
(default)
[AK4691]
2007/11
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