DocumentCode :
3269500
Title :
A 320 MHz, 1.5 mW at 1.35 V CMOS PLL for microprocessor clock generation
Author :
Von Kaenel, V. ; Aebischer, D. ; Piguet, C. ; Dijkstra, E.
Author_Institution :
Swiss Centre for Electron. & Microtechnol., Neuchatel, Switzerland
fYear :
1996
fDate :
10-10 Feb. 1996
Firstpage :
132
Lastpage :
133
Abstract :
This paper reports on the design of a phase-locked-loop (PLL) for on-chip clock generation for a high-performance microprocessor (/spl mu/P). The power consumption of the /spl mu/P has been reduced by scaling down the supply voltage. The whole system has been implemented using a 0.35/spl mu/m CMOS process that features low-threshold voltages for MOS devices to maintain the speed performance. The /spl mu/P can be set in idle mode to further reduce the overall power consumption. To allow fast recovery from the /spl mu/P idle mode, the PLL runs continuously during this mode. Therefore, the power consumption of the PLL has to be minimized. To obtain the highest performance from the /spl mu/P, the output jitter of the PLL has to be as low as possible. The power switching noise generated by the running /spl mu/P directly affects the output jitter of the on-chip PLL. In summary, the challenge was to design a PLL which combines limited jitter, low-supply voltage and low-power consumption.
Keywords :
CMOS digital integrated circuits; clocks; digital phase locked loops; jitter; microprocessor chips; 0.35 micron; 1.35 V; 1.5 mW; 320 MHz; CMOS process; MOS devices; idle mode; jitter; microprocessor clock generation; on-chip PLL; phase locked loop; power consumption; power switching noise; supply voltage; threshold voltage; CMOS process; Clocks; Energy consumption; Jitter; MOS devices; Microprocessors; Noise generators; Phase locked loops; Power generation; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Solid-State Circuits Conference, 1996. Digest of Technical Papers. 42nd ISSCC., 1996 IEEE International
Conference_Location :
San Francisco, CA, USA
ISSN :
0193-6530
Print_ISBN :
0-7803-3136-2
Type :
conf
DOI :
10.1109/ISSCC.1996.488540
Filename :
488540
Link To Document :
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