jakeselectronics
Member
What do you recomend amplifying it with? Part no?
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Since your curious, ill give it a try tonight before fixing it. Ah, it means Vdd A? Since theres only 1 Vdd that means AVdd = Vdd?
AVdd is the analogue supply voltage. If it's to be the same as Vdd, it's usually a good idea to filter it with a RC (or other) to reduce the clocking noise fed into the ADC reference.
I'd suggest amplifying the signal before feeding it into the ADC, and using a VREF >2V.
So you add 16 readings over a mains cycle, then divide the total by 8, (giving you double the resolution) so it is now at a resolution of 0.1'C.
I can grasp that theory no problem. Great idea.So you add 16 readings over a mains cycle, then divide the total by 8, (giving you double the resolution) so it is now at a resolution of 0.1'C.