ADC configuration

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Permalink Reply by Kenny Kim on May 1, 2014 at 5:04am

Depends on what you want. If you want a smaller range of reference voltages, you can attach "Vref+ and Vref-" to the PIC pins and use that (gives you more precision in reading)

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Permalink Reply by Kenny Kim on May 1, 2014 at 5:04am

Using "Vss and Vdd" is easier cos you don't need extra inputs to the PIC

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Permalink Reply by Kenny Kim on May 1, 2014 at 5:04am

Thank u, Remo! And is it like Vss and Vdd will have the conversion result as like a linear relationship (so like 1111111111 is 5 V and 00000 00000 is 0)?

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Permalink Reply by Kenny Kim on May 1, 2014 at 5:04am

ya, u can just do a ratio..

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Permalink Reply by Kenny Kim on May 1, 2014 at 5:04am

I have a question. When u have a Vss and Vdd is Vss 5V? Cause it gives me maximum possible output when it's like millivolts

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Permalink Reply by Kenny Kim on May 1, 2014 at 5:04am

It should be 5V. Are you waiting for all the acquisition times correctly?
(I haven't done any testing on my A/D code though, so no idea if it works)

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Permalink Reply by Kenny Kim on May 1, 2014 at 5:05am

 Oh apparently I was mixing up which one has 2 bits meaningful and which one 8 (cause textbook messes it up too apparently). Thanks a lot :))

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