If it were me, I would vary the signal between 1 and 4 volts with the PIC, 2.5 volts being your artificial ground (bias) and then cap couple it to the amplifier. I have done this before with our radio repeater for the courtesy tone's.
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Re: Negative swing with a DAC
If it were me, I would vary the signal between 1 and 4 volts with the PIC, 2.5 volts being your artificial ground (bias) and then cap couple it to the amplifier. I have done this before with our radio repeater for the courtesy tone's.
Dave Purola,
N8NTA
EN82fn
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