Adc Differential Linearity Error
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may be challenged and removed. (December 2008) (Learn how and when to remove this template message) Demonstrates A. Differential Linearity where a change in the input produces a corresponding change in output and differential nonlinearity adc B. Differential Non-linearity, where the relationship is not directly linear Differential nonlinearity (acronym wiki adc DNL) is a term describing the deviation between two analog values corresponding to adjacent input digital values. It is
Integral Nonlinearity
an important specification for measuring error in a digital-to-analog converter (DAC); the accuracy of a DAC is mainly determined by this specification. Ideally, any two adjacent digital codes correspond to output analog
Dac Inl Dnl Calculation
voltages that are exactly one Least Significant Bit (LSB) apart. Differential non-linearity is a measure of the worst case deviation from the ideal 1 LSB step. For example, a DAC with a 1.5 LSB output change for a 1 LSB digital code change exhibits 1⁄2 LSB differential non-linearity. Differential non-linearity may be expressed in fractional bits or as a percentage of full scale. offset error in adc A differential non-linearity greater than 1 LSB may lead to a non-monotonic transfer function in a DAC.[1] It is also known as a missing code. Differential linearity refers to a constant relation between the change in the output and input. For transducers if a change in the input produces a uniform step change in the output the tranducer possess differential linearity. Differential linearity is desirable and is inherent to a system such as a single-slope analog-to-digital converter used in nuclear instrumentation. Contents 1 Formula 2 See also 3 References 4 External links Formula[edit] DNL(i) = V out ( i + 1 ) − V out ( i ) ideal LSB step width − 1 {\displaystyle {\text{DNL(i)}}={{V_{\text{out}}(i+1)-V_{\text{out}}(i)} \over {\text{ideal LSB step width}}}-1} See also[edit] Integral nonlinearity References[edit] ^ INL and DNL definitions "A DNL error specification of less than or equal to 1LSB guarantees a monotonic transfer function with no missing codes. " http://www.maxim-ic.com/app-notes/index.mvp/id/283 External links[edit] INL/DNL Measurements for High-Speed Analog-to-Digital Converters (ADCs) Application Note 283 by Maxim Understanding Data Converters This electronics-related article is a stub. You can help Wikipedia by expanding it. v t e Retrieved from "https://en.wikipedia.org/w/index.php?t
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Nonlinearity Error Formula
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