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Re: [avr-chat] ATmega16 Differential ADC Measurements
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From: |
tomdean |
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Subject: |
Re: [avr-chat] ATmega16 Differential ADC Measurements |
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Date: |
Mon, 10 Sep 2007 08:01:57 -0700 (PDT) |
> The datasheet specifies a resolution for 1x and 20x gains, and only 7
> bits for 200x gain. Did you account for this when setting your
> expectations?
I used a gain of 1x, a clock < 200kHz, so the resolution should be 8 bits.
I expected an agreement within 0.004, or so. I saw differences greater
than 0.08.
I used mux[4:0]=10000, adc0 - adc1 and mux[4:0]=11011, adc3 - adc2.
tomdean
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