一种新的流水线ADC数字背景校正技术

2004 IEEE International Symposium on Circuits and Systems (IEEE Cat. No.04CH37512) Pub Date : 2004-05-23 DOI:10.1109/ISCAS.2004.1328117

K. El-Sankary, M. Sawan

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引用次数: 2

摘要

提出了一种补偿流水线模数转换器有限运培直流增益的数字背景校准技术。通过转换ADC并测量不同配置之间的增益比，可以在不中断ADC操作或注入校准信号的情况下进行背景校准。提出了一种改进的乘式数模转换器(MDAC)。这种新的MDAC允许ADC在不同配置之间切换，以创建用于校准的参考信号。仿真结果证明了该方法的有效性。

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A new digital background calibration technique for pipelined ADC

A digital background calibration technique to compensate for the finite opamps dc gain in pipelined analog-to-digital converters is presented. By transforming the ADC and measuring the gain ratios between different configurations, a background calibration is possible without interrupting the ADC operation or injecting a calibration signal. A modified multiplying digital-to-analog converter (MDAC) is proposed. This new MDAC allows the ADC to toggle between different configurations to create a reference signal used for the calibration. Simulations results prove the effectiveness of this new method.

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来源期刊

2004 IEEE International Symposium on Circuits and Systems (IEEE Cat. No.04CH37512)

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