Title :
All-Digital Dynamic Self-Detection and Self-Compensation of Static Phase Offsets in Charge-Pump PLLs
Author :
Liu, Yong ; Rhee, Woogeun ; Friedman, Daniel ; Ham, Donhee
Author_Institution :
Harvard Univ., Cambridge, MA
Abstract :
A 90nm CMOS charge-pump PLL incorporates an all-digital auxiliary feedback loop that dynamically detects and compensates the static phase offset. The on-chip monitoring of the static phase offset with a preset target value allows for accurate and reliable compensation. A measured static phase offset as large as 600ps is compensated to a plusmn15ps range.
Keywords :
CMOS integrated circuits; compensation; digital circuits; feedback; phase locked loops; 90 nm; CMOS charge-pump PLL; all-digital auxiliary feedback loop; all-digital dynamic self-detection; on chip monitoring; self-compensation o; static phase offset compensation; Charge pumps; Clocks; Digital control; Phase detection; Phase locked loops; Phase measurement; Temperature; Virtual colonoscopy; Voltage control; Voltage-controlled oscillators;
Conference_Titel :
Solid-State Circuits Conference, 2007. ISSCC 2007. Digest of Technical Papers. IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
1-4244-0853-9
Electronic_ISBN :
0193-6530
DOI :
10.1109/ISSCC.2007.373351
