ak4671 AKM Semiconductor, Inc., ak4671 Datasheet - Page 59

• Manufacturer Part Number: ak4671
• Description: Stereo Codec With Mic/rcv/hp-amp
• Manufacturer: AKM Semiconductor, Inc.

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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
MS0666-E-00
MIC Power
MIC Power
PMMP bit
0
1
Figure 55. MIC Block Circuit
Table 20. MIC Power
MPWR pin
LIN1 pin
RIN1 pin
LIN2 pin
RIN2 pin
- 59 -
MPWR pin
Output
Hi-Z
(default)
(Figure
Microphone
Microphone
Microphone
Microphone
55).
[AK4671]
2007/10