Understanding Integral Non-Linearity Errors

Abstract: To understand the effects of integral non-linearity errors, the most straightforward approach is to analyze a simple sine wave and apply well-known trigonometric identities to a non-ideal, analog-to-digital output transfer function, which contains an INL error.
Maxim > App Notes > A/D and D/A Conversion/Sampling Circuits Filter Circuits (Analog)

Keywords: ADCs, analog to digital, a to d, INL, errors, intermodulation distortion, linearity, linear time Sep 29, 2003
invariant, LTI, integral non-linearity, DSP, signal processing, superposition, converters

APPLICATION NOTE 2395
Understanding Integral Non-Linearity Errors

Abstract: To understand the effects of integral non-linearity errors, the most straightforward approach is to
analyze a simple sine wave and apply well-known trigonometric identities to a non-ideal, analog-to-digital
output transfer function, which contains an INL error.

With an ideal system, a single-tone sine wave with amplitude A and frequency fo,

X(t) = Asin(2π fot)

Sampling with an ADC with a period of T results i