Digital Calibration Techniques for Pipelined ADCs

Jeongpyo KIM  Yongchul SONG  Beomsup KIM  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E87-A    No.12    pp.3433-3435
Publication Date: 2004/12/01
Online ISSN: 
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Analog Signal Processing
analog-digital converter (ADC),  calibration,  adaptive systems,  

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This paper describes a technique for background digital multistage calibration in the removal of nonlinearities caused by design limitations in pipelined analog-to-digital converters (ADCs). Foreground initialization reduces the calibration time. Furthermore, an improved background skip-and-fill method enables the ADC to trace environmental changes. This method uses a least mean square adaptive algorithm that is digitally implemented with a significantly reduced number of tap coefficients.