On Tue, 11 Nov 1997 21:29:46 +0000, you wrote:

>Dear PIC.ers and Javier Puiggros esp.,
>..
>How to improve the resolution of a PIC 8-bit adc?
>If you can afford the processing time (many jobs can), you could
>read the port 256 times and summate the adc 8bit result each time
>to a 16bit file register pair.
You could use some output pins as a simple DAC to add a sub-LSB bias
to the input to increase precision - not sure if you could get as much
as 12 bit without high precision components or trimming, though - may
be OK for 10 bits. 
     ____                                                           ____
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