Abstract
A data-timing generator IC (DTG) provides a delay of over 2 ns, and operates over the wide frequency range of DC to 11 Gbit/s. By using a spectrum-conversion technique that suppresses the effect of the group-delay deviation of the delay gates, the output jitter is reduced to one-third that of a conventional DTG. The total peak-to-peak jitter of a 2-ns delayed 10-Gbit/s pseudo-random bit stream of 2^<31>-1 output data is 12 ps_<pp> including 7 ps_<pp> of input-data jitter. The DTG is fabricated using a 0.25-μm SiGe BiCMOS process and consumes 2.5 W from a 3.3-V supply.
