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Time-interleaved analog-to-digital converters: Status and future directions
Linköping University, Department of Electrical Engineering.
2006 (English)In: IEEE International Symposium on Circuits and Systems,2006, 2006Conference paper (Refereed)
Abstract [en]

We discuss time-interleaved analog-to-digital converters (ADCs) as a prime example of merging analog and digital signal processing. A time-interleaved ADC (TI-ADC) consists of M parallel channel ADCs that alternately take samples from the input signal, where the sampling rate can be increased by the number of channels compared to a single channel. We recall the advantages of time interleaving and investigate the problems involved. In particular, we explain the error behavior of mismatches among the channels, which distort the output signal and reduce the system performance significantly, and provide a concise framework for dealing with them. Based on this error analysis, we review the principle possibilities of calibrating TI-ADCs, where we point out the necessities and advantages of digital enhancement. To this end, we discuss open issues of channel mismatch identification as well as channel mismatch correction.

Place, publisher, year, edition, pages
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Engineering and Technology
URN: urn:nbn:se:liu:diva-34518Local ID: 21582OAI: diva2:255366
Available from: 2009-10-10 Created: 2009-10-10

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Johansson, Håkan
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Department of Electrical Engineering
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