Analog ground

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grahamguitarman

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Bit of a nooby question here.
I've been using teensy in my synth designs for quite a while now, but one pin I've been curious about but never asked about is the Analog ground.
Bearing in mind that I'm more of a programmer than an electrical engineer, what is the purpose of the analogue ground?
Should I be taking this into account when using analogue circuits with my Teensy?
 
I believe the Analog Ground pin's purpose is to be separate from the digital ground pin(s). This way any activity on the digital ground won't effect your analog readings.
 
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