AK4534 Datasheet, PDF (24/64 Pages) Asahi Kasei Microsystems – 16Bit CODEC with MIC/HP/SPK-AMP

ASAHI KASEI
[AK4534]
n MIC Gain Amplifier
AK4534 has a Gain Amplifier for Microphone input. This gain is 0dB or 20dB, selected by the MGAIN bit. The typical
input impedance is 30kΩ.
MGAIN bit
Input Gain
0
0dB
1
+20dB
Table 14. Input Gain
Default
n MIC Power
The MPI and MPE pins supply power for the Microphone. These output voltages are 0.75 x AVDD (typ) and the maximum
output current is 1.25mA.
MS0133-E-03
- 24 -
2003/5