An adaptive PAM-4 5 Gb/s backplane transceiver in 0.25 μm CMOS. - Jeff L. Sonntag; John T. Stonick; James Gorecki; Bill Beale; Bill Check; Xue-Mei Gong; Joe Guiliano; Kyong Lee; Bob Lefferts; David A. Yokoyama-Martin; Un-Ku Moon; Amber Sengir; et al. (CICC, 2002)