A new digital background calibration for redundant radix-4 pipelined ADCs by modeling of adaptive filter for linear and nonlinear errors
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- 作者：Esmaeil Fatemi-Behbahani ; e-fatemi@phdstu.scu.ac.ir" class="auth_mail" title="E-mail the corresponding author ; Ebrahim Farshidi farshidi@scu.ac.ir" class="auth_mail" title="E-mail the corresponding author ; Karim Ansari-Asl karim.ansari@scu.ac.ir" class="auth_mail" title="E-mail the corresponding author
- 关键词：Adaptive filter ; Capacitor mismatch ; Multi-bit pipeline stages ; Nonlinear channel ; Calibration
- 刊名：Measurement
- 出版年：2016
- 出版时间：April 2016
- 年：2016
- 卷：83
- 期：Complete
- 页码：123-134
- 全文大小：1916 K
文摘
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A new digital background calibration for a radix-4 pipeline is presented.
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Output of each stage is defined as the sum of the ideal and error signal.
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For cancelation of non-ideal impairment a nonlinear adaptive filter is designed.
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The INL/DNL of a 14-bit pipeline are improved from 17LSB/3LSB to 0.45LSB/0.41LSB.
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The SNDR/SFDR parameters are increased from 30 dB/36 dB to 83 dB/90 dB.