Processing math: 100%
A 0.65-to-10.5 Gb/s Reference-Less CDR With Asynchronous Baud-Rate Sampling for Frequency Acquisition and Adaptive Equalization | IEEE Journals & Magazine | IEEE Xplore

A 0.65-to-10.5 Gb/s Reference-Less CDR With Asynchronous Baud-Rate Sampling for Frequency Acquisition and Adaptive Equalization


Abstract:

This paper presents a continuous-rate reference-less clock and data recovery (CDR) circuit with an asynchronous baud-rate sampling to achieve an adaptive equalization as ...Show More

Abstract:

This paper presents a continuous-rate reference-less clock and data recovery (CDR) circuit with an asynchronous baud-rate sampling to achieve an adaptive equalization as well as a data rate acquisition. The proposed scheme also enables the use of a successive approximation register (SAR) based approach in the frequency acquisition and results in a fast coarse lock process. The CDR guarantees a robust operation of a fine locking even in the presence of large input data jitter due to the adaptive equalization and a jitter-tolerable rotation frequency detector (RFD) that eliminates a dead-zone problem with a simple circuitry. The fabricated CDR in 65 nm CMOS shows a wide lock range of 0.65-to-10.5 Gb/s at a bit error rate (BER) of 10^{-12}. The CDR consumes 26 mW from a single supply voltage of 1 V at 10 Gb/s including the power consumption for equalizer. By an adaptive current bias control, the power consumption is also linearly scaled down with the data rate, exhibiting a slope of about 2 mW decrease per Gb/s.
Published in: IEEE Transactions on Circuits and Systems I: Regular Papers ( Volume: 63, Issue: 2, February 2016)
Page(s): 276 - 287
Date of Publication: 07 March 2016

ISSN Information:

Funding Agency:


References

References is not available for this document.