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.

2001年11月20日 · Manufacturers have recently introduced high-performance analog-to-digital converters (ADCs) that feature outstanding static and dynamic performance. You might ask, "How do they measure this performance, and what equipment is used?"

2022年12月9日 · Learn about an imperfection that can affect the system response, the ADC’s nonlinearity, namely the differential nonlinearity (DNL) and integral nonlinearity (INL) specifications. The transfer function of a real-world analog-to-digital converter (ADC) might deviate from the ideal response due to effects such as offset and gain errors.

2.3 Differential Non Linearity (DNL) Differential Non Linearity, also referred as Differential Linearity Error, describes deviation between ideal step-sizeto actual step-sizeobserved for each ADC code.

本文你将了解到可以影响系统响应的缺陷，即ADC的非线性，包括 微分非线性 (DNL)和 积分非线性 (INL)规范（specifications）。 由于失调和增益误差等影响，实际的模数转换器（ADC）的传递函数可能会偏离理想响应。 另一个可能影响系统响应的不完善之处是ADC的非线性。 通常使用不同的规格来表征ADC的线性度。 对于测量和控制应用， 微分非线性（DNL）和积分 非线 …

Differential Nonlinearity (DNL) is a measure of the separation between adjacent levels measured at each vertical step (% or LSB). DNL = (Dcx - 1) LSBs where Dcx is the size of the actual vertical step in LSBs.

DNL stands for Differential Non-Linearity and quantifies the ADC or DAC precision. The term differential refers to the values an ADC takes between two consecutive levels. When the input signal swings in any direction, the ADC samples the signal and its output is …

2020年10月1日 · This article discusses the method of calculating an ADC’s INL and DNL using a sine-wave input and the effects of various non-idealities in the input on linearity measurement.

2003年6月18日 · During a histogram test a repetitive, dynamic signal with a bathtub distribution (e.g. sine-wave signal) is applied to the analog-to-digital converter (ADC), generating a corresponding distribution of digital codes at the output of the converter.

By quantifying deviations from ideal responses and visualizing DNL characteristics, engineers can effectively assess ADC performance and mitigate potential inaccuracies in control and measurement applications.