SLAS831D March 2014 – March 2018 PCM1860 , PCM1861 , PCM1862 , PCM1863 , PCM1864 , PCM1865
PRODUCTION DATA.
The PCM186x can provide a microphone bias to power and bias microphones at 2.6 V on pin 5. Decouple or filter the Mic Bias pin with an external capacitor. Mic Bias is typically used with a electret microphone. The internal regulator, as well as an on-chip terminating resistor to GND can also be enabled using register MIC_BIAS_CTRL (Page.3, 0x15). By default, the device is configured to bypass the on-chip resistor. The mic bias pin can be left unconnected if not used.