4-Gb/s parallel receivers with adaptive FEXT cancellation by pulse-width and amplitude calibrations
Journal
IEEE Transactions on Circuits and Systems II: Express Briefs
Journal Volume
60
Journal Issue
10
Pages
622-626
Date Issued
2013-10
Author(s)
Yan-Yu Lin
Abstract
Two 4-Gb/s parallel receivers with adaptive far-end crosstalk (FEXT) cancellation are presented, which requires a calibration mode. A digitally controlled high-pass filter and a variable-gain amplifier are used to generate the crosstalk cancellation (XTC) signal. The pulse width and amplitude of the XTC signal are automatically calibrated to match the FEXT signal for different channel spacing. It is expected to minimize the residual FEXT signal. Two receivers using the proposed adaptive XTC are fabricated in 40-nm CMOS technology and the core area occupies 0.045 mm2. The power consumption from a 0.9-V supply is 19.8 mW. For two 4-Gb/s PRBS of 2{7}-1 passing through FR4 PCB traces with 5-in long and 8-mil spacing, the measured peak-to-peak jitter of data is reduced by 27.78 ps by using the proposed adaptive XTC. © 2013 IEEE.
Subjects
Crosstalk cancellation (XTC); crosstalk-induced jitter (CIJ); far-end crosstalk (FEXT)
SDGs
Other Subjects
High pass filters; Jitter; Microstrip devices; Polychlorinated biphenyls; Variable gain amplifiers; Voltage regulators; Amplitude calibration; Channel spacings; Cross-talk cancellation; Crosstalk-induced jitter; Digitally controlled; Far end crosstalk; Parallel receiver; Peak-to-peak jitter; Crosstalk
Type
journal article