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

fYear

2011

fDate

15-18 May 2011

Firstpage

989

Lastpage

992

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (ISCAS), 2011 IEEE International Symposium on

Conference_Location

Rio de Janeiro

ISSN

0271-4302

Print_ISBN

978-1-4244-9473-6

Electronic_ISBN

0271-4302

Type

conf

DOI

10.1109/ISCAS.2011.5937734

Filename

5937734