ADC INL/DNL code density testing help

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The discussion focuses on deriving the offset and amplitude formulas used in computing ADC Integral Non-Linearity (INL) and Differential Non-Linearity (DNL) through code density testing. The user seeks clarification on the derivation of specific constants, C1 and C2, mentioned in the context of curve fitting for these calculations. There is a request for assistance in understanding these formulas and their application. The conversation emphasizes the need for detailed explanations to aid in the computation process. Overall, the thread highlights a technical inquiry into ADC performance metrics.
jeep26
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Hi Guys,
Could you please help me on the derrivation of offset and amplitude formula being used in the computation of ADC INL and DNL using code density testing.

below are the formulas.
Presentation1.jpg


Appreciate any help.

Regards.
 
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jeep26 said:
Hi Guys,
Could you please help me on the derrivation of offset and amplitude formula being used in the computation of ADC INL and DNL using code density testing.

below are the formulas.
Presentation1.jpg


Appreciate any help.

Regards.

Welcome to the PF.

What is the context of the question?
 
hi berkeman,
The formula offset and amp indicated in the lower right of the diagram are used for curve fitting to compute for the INL and DNL using code density testing. I can't figure out how the C1 and C2 were derived.

Thanks for welcoming me.

Regards,
jeep
 
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