All-Digital Background Calibration Technique for Offset, Gain and Timing Mismatches in Time-Interleaved ADCs

Ta, Van-Thanh and Hoang, Van-Phuc and Tran, Xuan Nam (2019) All-Digital Background Calibration Technique for Offset, Gain and Timing Mismatches in Time-Interleaved ADCs. EAI Endorsed Transactions on Industrial Networks and Intelligent Systems, 6 (21): 2. ISSN 2410-0218

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Abstract

This paper presents a method for all-digital background calibration of multiple channel mismatches including offset, gain and timing mismatches in time-interleaved analog to digital converters (TIADCs). The averaging technique is used to remove the offset mismatch at each channel. The gain mismatch is calibrated by calculating the power ratio of the subADC over the reference ADC. Timing skew is compensated by using Hadamard transform for error correction and least mean squares (LMS) algorithm for estimation of the clock skew. The performance improvement of TIADCs employing these techniques is demonstrated through numerical simulations.

Item Type: Article
Uncontrolled Keywords: Time-interleaved analog-to-digital converter, channel mismatches, all-digital background calibration
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
QA75 Electronic computers. Computer science
Depositing User: EAI Editor I.
Date Deposited: 11 Sep 2020 08:52
Last Modified: 11 Sep 2020 08:52
URI: https://eprints.eudl.eu/id/eprint/249

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