A 12.5 Gbps CDR with differential to common converting edge detector for the wired and wireless serial link

This paper introduces low-power and small area injectionlocking clock and data recovery circuit (CDR) for the wireline and wireless proximity link. By using signal conversion from differential input to common-mode output, the newly proposed edge detector can eliminate the usually used delay line and XOR-based edge detector, and provided low power operation and a small circuit area. The CDR test chip fabricated in a 65-nm CMOS process consumes 30mW from a 1.2-V supply at 12.5 Gbps. The fabricated CDR achieved a BER lower than 10^-12 and the recovered clock had an rms jitter of 0.87 ps. The CDR area is 0.165 mm².