Fast Estimation of A/d Converter Nonlinearities
نویسندگان
چکیده
Ab strac t – This paper deals with an innovative strategy to shorten the record size required to estimate the Integral Non-Linearity (INL) of Analog-to-Digital Converters (ADC's) through the so-called Sinewave Histogram Test (SHT). Such a size reduction is achieved by low-pass filtering the collected sequences of test samples using a simple moving average filter. After some preliminary simulations, the validity of the proposed approach have been confirmed by some experimental results.
منابع مشابه
Modeling and Stability Analysis of Closed Loop Current-Mode Controlled Ćuk Converter using Takagi-Sugeno Fuzzy Approach
The current-mode controlled Ćuk converter, being a fourth-order nonlinear nonsmooth system, does not lend itself to any simple analysis and the complexity lies mainly in the modeling of the circuit to capture all the essential nonlinearities that occur in fast time scale. This paper, for the first time, extends the Takagi-Sugeno fuzzy modeling approach to capture fast time-scale nonlinearities ...
متن کاملEstimation of ADC Nonlinearities from the Measurement in Input Voltage Intervals
This paper present proposal for fast testing method of AD converters aimed for estimation of INL as the error function and superimposed uncertainty based on two dimensional ADC error model. INL function is being determined by curve fitting of approximation function from the measurement of INL(k) in chosen code bins of the full scale range of ADC under test. Proposed testing method is suitable f...
متن کاملFull-Speed Testing of A/D Converters
High-precision analog-to-digital converters (ADC’S) are sought for digital audio and instrumentation and high-speed converters for video applications. Improved methods of converter testing at full speed are needed. This paper describes improved computer-aided ADC characterization methods based on the code density test and spectraf analysis using the fast Fourier transform (FFT). The code densit...
متن کاملFrequency Domain Analysis for Integral Nonlinearity Measurement in A/d Converters with Dither
The paper examines the problem of achieving a fast measurement of nonlinearity for a dithered converter. It is shown that, since dither removes small-scale systematic errors, measuring the remaining large-scale (smooth) nonlinearity can be efficiently achieved via a fast frequency domain test, formerly analyzed by the authors for conventional converters without dither. The test appears especial...
متن کاملVoltage Regulation of a Negative Output Luo Converter Using a PD-PI Type Sliding Mode Current Controller
This paper describes a new design for direct sliding mode method with a high switching frequency using the PD-PI type sliding surface applied to a negative output Luo converter worked in continuous current mode for applications required constant power source such as aerospace applications, medical equipment and etc. Because of the output power and line changes, the converter model is also nonli...
متن کامل