A CMOS Delayed Locked Loop ( DLL ) for Reducing Clock Skew
نویسندگان
چکیده
Under 500ps Yong-Bin Kim Tom Chen Department of Electrical Engineering Colorado State University Abstract This paper presents a variable delay line DLL circuit implemented in a 0.8 m CMOS technology. A phase detector and two charge pump circuits calibrate the delay per stage of the delay line using push-pull type clock synchronization scheme. The delay line can be programmed 6 to 18 stages. The DLL circuit is capable of reducing clock skew from 1-3ns to below 500ps for clock frequencies from 50Mhz to 150Mhz.
منابع مشابه
A CMOS delayed locked loop (DLL) for reducing clock skew to under 500 ps
This paper presents a variable delay line DLL circuit implemented in a 0.8 m CMOS technology. A phase detector and two charge pump circuits calibrate the delay per stage of the delay line using push-pull type clock synchronization scheme. The delay line can be programmed 6 to 18 stages. The DLL circuit is capable of reducing clock skew from 1-3ns to below 500ps for clock frequencies from 50Mhz ...
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