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MAX9814 battery lifel
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MAX9814 battery lifel

by slingslingbinks on Thu Mar 14, 2019 10:09 pm

I purchased your Electret Microphone Amplifier - MAX9814 with Auto Gain Control and i'm wondering what the battery life is, I'm going to install this amplifier into a cb radio microphone and i'll be using a 3 volt 1220 coin battery to power it.
Sence the battery is going to be wired up to the amp all the time and there's no way to put a switch on the battery.
Thank's Scott.

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Re: MAX9814 battery lifel

by adafruit_support_mike on Fri Mar 15, 2019 3:25 am

The amplifier uses about 5mA, and 1220 coin cells usually hold about 225mAh of stored energy.

One coin cell would probably last about 40-45 hours.

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Re: MAX9814 battery lifel

by slingslingbinks on Sat Mar 16, 2019 6:34 am

Thanks Mike

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