Fault Analysis methods for flash ADCs

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Re: Linearity Analysis methods for flash ADCs

What you want is not a fault analysis (a term often used in digital circuit analyses with quite different purpose), but a linearity analysis method.

I think the simplest method is to use an ideal (linear) saw tooth input (or a stair case input with 1 LSB step distances) and check the output against the input - either manually, or via a wave plot comparison between your input waveform with the back-converted analog waveform of your ADC's output by an ideal DAC (plotting the difference), or a (more or less automatic) text comparison of your digital output with the digital output of an ideal ADC running in parallel to your ADC.
 
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