Calibration method for interleaving an A/D converter

Details Calibration method for interleaving an A/D converter Calibration method for interleaving an A/D converter

2007-01-09

2007-01-09

Young, Brian (Department: 2819)

Coded data generation or conversion

Converter calibration or testing

C341S155000

Reexamination Certificate

active

10279493

ABSTRACT:
A method and low cost apparatus to accurately determine the gain, offset, and/or skew calibration values of each A/D converter in a few steps for an interleaving A/D converter. The calibration method includes: applying sine waves to the input as a calibration signal during calibration, A/D converting of the sine wave by a plurality of A/D conversion means in a predetermined order and storing the converted data in a data storage memory, and determining the gain, offset, and/or skew calibration values by using sine curve fitting on a sequence of converted data for each of the plurality of A/D conversion means.

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Fu, D. et al. “Digital Background Calibration of a 10B 40MSample/s Parallel Pipelined ADC,” 1998, IEEE International Solid State Circuits Conference, S. 140,141.
“Digital Background Calibration of a 10b 40Msample/s Parallel Pipelined ADC,” D. Fu, K. Dyer, S. Lewis and P. Hurst, 1998, no month.

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