Homogeneity Enforced Calibration of Stage Nonidealities for Pipelined ADCs
Pipelined adc are fundamental components of various signal processing systems requiring high sampling rates and a high linearity. Over the past years, calibration techniques have been intensively investigated to increase the linearity In this work, we propose an equalization-based calibration techni...
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| Published in: | IEEE transactions on circuits and systems. II, Express briefs Vol. 70; no. 4; p. 1 |
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| Main Authors: | , |
| Format: | Journal Article |
| Language: | English |
| Published: |
New York
IEEE
01-04-2023
The Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subjects: | |
| Online Access: | Get full text |
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| Summary: | Pipelined adc are fundamental components of various signal processing systems requiring high sampling rates and a high linearity. Over the past years, calibration techniques have been intensively investigated to increase the linearity In this work, we propose an equalization-based calibration technique which does not require knowledge of the adc input signal for calibration. For that, a test signal and a scaled version of it are fed into the adc sequentially, while only the corresponding output samples are used for calibration. Several test signal sources are possible, such as a sg or the sa itself. For the latter case, the presented method corresponds to a background calibration technique. Thus, slowly changing errors are tracked and calibrated continuously. Because of the low computational complexity of the calibration technique, it is suitable for an on-chip implementation. Ultimately, this work contains an analysis of the stability and convergence behavior as well as simulation results. |
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| ISSN: | 1549-7747 1558-3791 |
| DOI: | 10.1109/TCSII.2022.3227441 |