Posted on Jun 16, 2012

This circuit generates a symmetrical, 10-m V pk-pk triangle waveform which is summed with a de level and connected to the aid analog input for noise/DNL testing. The de level input offsets the triangle waveform over the input range of the ADC.

Click here to download the full size of the above Circuit.

The 10-mV amplitude amounts to an 8 LSB span for a 12-bit, 5-V, full-scale ADC.

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