Title :
Linearization of ADCs via digital post processing
Author :
Yang, Yang ; Motafakker-Fard, Ali ; Jalali, Bahram
Author_Institution :
Dept. of Electr. Eng., Univ. of California Los Angeles, Los Angeles, CA, USA
Abstract :
Volterra series offers a practical tool for mathematical modeling of nonlinear systems such as Analog to Digital Converters (ADCs). In this paper, we report of ADC linearization by employing Volterra model and digital post processing. We first obtain the Volterra model from calibration data by using a Vandermonde matrix. Then, we employ an efficient method for data collection, which are employed to build an ADC module. The model is then used to estimate and compensate the nonlinearity. Index Terms-Analog to Digital Converters, Volterra Kernels, Measurements, Post Calibration.
Keywords :
analogue-digital conversion; calibration; matrix algebra; nonlinear systems; ADC linearization; Vandermonde matrix; Volterra model; analog-digital converters; calibration data; data collection; digital post processing; nonlinearity compensation; Calibration; Distortion measurement; Frequency domain analysis; Kernel; Nonlinear distortion; Time domain analysis; Analog to Digital Converters; Measurements; Post Calibration; Volterra Kernels;
Conference_Titel :
Circuits and Systems (ISCAS), 2011 IEEE International Symposium on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4244-9473-6
Electronic_ISBN :
0271-4302
DOI :
10.1109/ISCAS.2011.5937734
