Abstract
A low-power clock and data recovery (CDR) circuit using dynamic current-mode logic (CML) latches followed by a V/I (Voltage to Current) converter merged with XOR for half-rate linear phase detection is described. The loop latency of the CDR is also reduced with the proposed scheme. Thus the faster locking time and jitter reduction could be achieved compared to the CDR using conventional static CML latches and XOR gates in a linear phase detector (PD) followed by a V/I converter. A CDR circuit with the proposed circuit topology has been designed and fabricated with 0.18-µm CMOS technology and has shown 5-Gb/s data recovery with 14.9 mW power saving compared to the conventional CDR structure under a 1.8-V supply
