Title :
A Self-Calibrated Multiphase DLL-Based Clock Generator
Author :
Chen, Hsin-Shu ; Hung, Chao-Ching
Author_Institution :
Nat. Taiwan Univ., Taipei
Abstract :
A delay-locked loop (DLL) Integrated with an analog self-calibration circuit is presented. The proposed DLL can generate precise multiphase clocks over process corners, voltage/temperature variations and device mismatches when incorporating with the calibration circuit and variable-delay output buffers. The experimental circuit in a standard 0.35-mum CMOS process demonstrates delay mismatch between phases can be reduced from tens of pico-second to less than ten pico-seconds at 100 MHz. The prototype circuit occupies an area of 2.1 mm2, and consumes around 10.1 mW at 3.3 V.
Keywords :
CMOS integrated circuits; calibration; clocks; delay lock loops; CMOS process; analog self-calibration circuit; delay mismatch; delay-locked loop based clock generator; frequency 100 MHz; power 10.1 mW; self-calibrated multiphase DLL; size 0.35 mum; voltage 3.3 V; Calibration; Clocks; Delay effects; Delay lines; Feedback circuits; Phase detection; Phase frequency detector; Quantization; Temperature; Voltage;
Conference_Titel :
VLSI Design, Automation and Test, 2007. VLSI-DAT 2007. International Symposium on
Conference_Location :
Hsinchu
Print_ISBN :
1-4244-0583-1
Electronic_ISBN :
1-4244-0583-1
DOI :
10.1109/VDAT.2007.373237
