Not sure if this is helpful, but,....
What if you daisy chain 4 HC595 or similar serial - parallel shifters? Each 595 in turn could drive a R-2R ladder or simply jam its 8 bits into a parallel loaded single DAC.
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Re: 4 DAC channels from a single PIC
Not sure if this is helpful, but,....
What if you daisy chain 4 HC595 or similar serial - parallel shifters? Each 595 in turn could drive a R-2R ladder or simply jam its 8 bits into a parallel loaded single DAC.
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