TAILIEUCHUNG - Báo cáo hóa học: " Research Article A Simple Technique for Fast Digital Background Calibration of A/D Converters"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article A Simple Technique for Fast Digital Background Calibration of A/D Converters | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2008 Article ID 453218 11 pages doi 2008 453218 Research Article A Simple Technique for Fast Digital Background Calibration of A D Converters Francesco Centurelli Pietro Monsurro and Alessandro Trifiletti Dipartimento di Ingegneria Elettronica Universita di Roma La Sapienza Via Eudossiana 18 00184 Roma Italy Correspondence should be addressed to Francesco Centurelli centurelli@ Received 30 April 2007 Revised 4 August 2007 Accepted 28 October 2007 Recommended by C. Vogel A modification of the background digital calibration procedure for A D converters by Li and Moon is proposed based on a method to improve the speed of convergence and the accuracy of the calibration. The procedure exploits a colored random sequence in the calibration algorithm and can be applied both for narrowband input signals and for baseband signals with a slight penalty on the analog bandwidth of the converter. By improving the signal-to-calibration-noise ratio of the statistical estimation of the error parameters our proposed technique can be employed either to improve linearity or to make the calibration procedure faster. A practical method to generate the random sequence with minimum overhead with respect to a simple PRBS is also presented. Simulations have been performed on a 14-bit pipeline A D converter in which the first 4 stages have been calibrated showing a 15 dB improvement in THD and SFDR for the same calibration time with respect to the original technique. Copyright 2008 Francesco Centurelli et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. INTRODUCTION Wireless communication has become one of the main drivers for high-resolution high-speed analog-to-digital converters ADCs . There is a strong trend .

TÀI LIỆU LIÊN QUAN
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.