Circuit design using ADAU1961WBCPZ(MICBIAS)
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I would like to confirm the circuit design using the ADAU1961WBCPZ.
Is a bypass capacitor for GND required in the immediate vicinity of the 5-pin MICBIAS terminal?
How much capacitance should a bypass capacitor be attached if necessary?
In addition, connect this output to two MEMS microphone power terminals.
Integrated/Special Purpose A/D Converters
adau1961
Audio CODECs
Hello HTCV3,
Yes, a bypass cap would be advisable to do. 0.1uf is a good value to use.
You will need to be certain that the power draw of the MEMS mics is not too much for the MicBias limits.
From the datasheet:
Bias Current Source
AVDD = 3.3 V, MBI = 0, MPERF = 1
Max = 3mA
Dave T
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