A Statistical-Based Digital Background Calibration for Pipelined ADC

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A Statistical-Based Digital Background Calibration for Pipelined ADC

更新时间：2026-09-04

- A Statistical-Based Digital Background Calibration for Pipelined ADC
- Vol. 28, Issue 2, Pages: 69-73(2011)
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- Published：2011
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一种基于统计的流水线ADC数字后台校准方法[J]. 微电子学与计算机, 2011, 28(2): 69-73.

A Statistical-Based Digital Background Calibration for Pipelined ADC[J]. 2011, 28(2): 69-73.
一种基于统计的流水线ADC数字后台校准方法[J]. 微电子学与计算机, 2011, 28(2): 69-73. DOI：

A Statistical-Based Digital Background Calibration for Pipelined ADC[J]. 2011, 28(2): 69-73. DOI：

摘要

高精度流水线ADC的设计需要校准技术来提高其转换精度.基于统计的数字后台校准方法无需校准信号

直接通过对输出的统计得到误差值的大小

将其从数字输出中移除从而消除了ADC输出非线性.将该校准方法应用于14 bit流水线ADC中

仿真结果表明校准后信噪失真比SNR为76.9 dB

无杂散动态范围SFDR为73.9 dB

有效精度ENOB从9 bit 提高到12.5 bit.

Abstract

Pipelined ADCs with high resolution need calibration technique to increase their conversion precision. The statistical-based digital background calibration technique presented here calculates the output error via statistic analysis

and then the error is subtracted from the ADC output. With this calibration architecture used in a 14-bit pipelined ADC

the simulation results show that after calibration the SNR is 76.9 dB

SFDR is 73.9 dB

and the EN0B is improved from 9 bit to 12.5 bit.

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