On 12 April 2012 14:42, Neil wrote: > 10F320/2 looks really good. =A0Only thing I'm wondering is that it seems > the PWM voltage output is based on the supply voltage, so for higher > accuracy, should I run the analog output back into an A/D for some type > of dynamic closed-loop adjustment? =A0If so, I'd go for something with > =A0>8-bit A/D. > > Alternatively, I could monitor the power-supply voltage and adjust the > PWM value accordingly. =A0But here too a 10-bit A/D would be nice. > > The 12F1501 looks promising. > > Cheers, > -Neil. > > How about clamping the output PWM at a level a bit below the supply voltage? That would reduce the dependency. Just watch out for temperature variation! RP --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .