If the output from whatever unidentified source is not "constant", how does the addition of an amplifier correct the situation?As i know, the output current from for microcontroller is not constant
I agree. your problem is not so clear to us to solve it.I don't think the chip has a D to A, though it does have PWM outputs.
Possibly the idea is to filter the PWM output to a DC level and offset it to suit the bipolar amp input.
by Duane Benson
by Jake Hertz
by Jake Hertz