INL-THD, DNL-SNR Relation

1. How do you calculate INL from DNL?
2. What is inl and DNL?
3. What is DNL in ADC?
4. What is the difference between sinad and SNR?

How do you calculate INL from DNL?

INL = | [(V_D - V_ZERO)/V_LSB-IDEAL] - D | , where 0 < D < 2^N-1. V_D is the analog value represented by the digital output code D, N is the ADC's resolution, V_ZERO is the minimum analog input corresponding to an all-zero output code, and V_LSB-IDEAL is the ideal spacing for two adjacent output codes.

What is inl and DNL?

s = inldnl( analog , digital , range , type ) calculates the integral nonlinearity (INL) and differential nonlinearity (DNL) errors of ADCs and DACs. The function calculates INL and DNL using the analog and digital input output data and the nominal analog dynamic range of the converter.

What is DNL in ADC?

Differential nonlinearity (acronym DNL) is a commonly used measure of performance in digital-to-analog (DAC) and analog-to-digital (ADC) converters. It is a term describing the deviation between two analog values corresponding to adjacent input digital values.

What is the difference between sinad and SNR?

Signal-to-noise ratio (SNR, or sometimes called SNR-without-harmonics) is calculated from the FFT data the same as SINAD, except that the signal harmonics are excluded from the calculation, leaving only the noise terms.