A correlation-based background calibration technology for the pipeline A/D Converter

This paper describes a correlation-based background calibration method to calibrate the linear and non-linear gain errors of pipelined ADCs. The calibration algorithm introduces a sequence PN to the input of the sub-ADC to have the output code modulated, estimates the errors by correlating the injec...

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Bibliographic Details
Published in2016 13th IEEE International Conference on Solid-State and Integrated Circuit Technology (ICSICT) pp. 731 - 733
Main Authors Hongmei Chen, Honghui Deng, Yongsheng Yin
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2016
Subjects
Adaptation models
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ISBN1467397172
9781467397179
DOI10.1109/ICSICT.2016.7999026

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Summary:This paper describes a correlation-based background calibration method to calibrate the linear and non-linear gain errors of pipelined ADCs. The calibration algorithm introduces a sequence PN to the input of the sub-ADC to have the output code modulated, estimates the errors by correlating the injected sequence with the output code, and calibrates the errors based on a LMS algorithm. Simulation results show that, with an equivalent gain error 2% and a 3-order nonlinear gain error 2%, after calibration, the measured DNL and INL were improved to -0.46/0.88 LSB and -0.81/0.92 LSB, respectively, and the SFDR/SNDR are improved to 93.8dB and78.6 dB, respectively.
ISBN:1467397172
9781467397179
DOI:10.1109/ICSICT.2016.7999026