IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
LETTER
A 0.8-6Gb/s wireline receiver based on the spectrum-balancing equalizer and semi-digital dual loop CDR
Wenya ChenQingsong CaiZhong YangShushan Qiao
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2023 Volume 20 Issue 10 Pages 20230050

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Abstract

In this work, a high-speed four-channel 0.8-6Gb/s wireline receiver was reported. Based on spectrum-balancing (SB) equalizer and slicer amplitude attenuator, it can be automatically adjusted to the most suitable state, avoiding the underbalanced or over-balance caused by amplitude mismatch. Moreover, a first-order semi-digital dual-loop clock and data recovery circuit (SDDCDR) with a high-speed digital loop filter (DLF) is also integrated to simplify the structure and improve the tracking ability of frequency offset. The prototype was fabricated on a 130nm CMOS process with a core area of 0.38mm2 for a single lane, consuming 97.3mW power at a 1.2V supply and tracking a 6966ppm frequency offset. In a 3m-cable test environment, the receiver sinusoidal jitter tolerance at high frequency is better than 0.22UI when 6Gb/s.

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© 2023 by The Institute of Electronics, Information and Communication Engineers
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