Connection a Microphone

Moderator: flatmax

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Posts: 3
Joined: Tue Jan 24, 2017 2:01 am

Connection a Microphone

Post by benisjammin » Wed Jan 25, 2017 9:39 pm


I would like to connect a microphone to the Audio injector (version without the inbuilt one). The microphone I would like to connect requires a bias voltage between 2 and 3.5 V. Is this possible? Which pins are the correct ones for Signal, Ground and Bias? I notice that it should be possible with this Codec according the the Cirrus / Wolfson specifications.

Many thanks,

Posts: 609
Joined: Sat Jul 23, 2016 11:39 pm

Re: Connection a Microphone

Post by flatmax » Thu Feb 02, 2017 7:18 pm

Yep you can.

If you bought the version without the microphone, connect the electret microphone to the "CMic" empty footprint. The hole inside the white patch is the ground pin.

Hope that helps !
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