ADC INL/DNL code density testing help

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SUMMARY

The discussion focuses on the derivation of offset and amplitude formulas used in the computation of ADC INL (Integral Non-Linearity) and DNL (Differential Non-Linearity) through code density testing. Participants seek clarity on how specific constants, C1 and C2, are derived for accurate curve fitting in this context. The conversation emphasizes the importance of these formulas in ensuring precise ADC performance evaluation.

PREREQUISITES
  • Understanding of ADC (Analog-to-Digital Converter) principles
  • Familiarity with INL and DNL concepts
  • Knowledge of code density testing methodologies
  • Basic grasp of curve fitting techniques
NEXT STEPS
  • Research the derivation of offset and amplitude formulas in ADC testing
  • Explore advanced code density testing techniques for ADCs
  • Learn about curve fitting methods applicable to INL and DNL calculations
  • Study the impact of INL and DNL on overall ADC performance
USEFUL FOR

Engineers and technicians involved in ADC design and testing, particularly those focused on performance metrics like INL and DNL, will benefit from this discussion.

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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