DocumentCode :
3499808
Title :
Differential cascode voltage switch with the pass-gate (DCVSPG) logic tree for high performance CMOS digital systems
Author :
Lai, F.S. ; Hwang, W.
Author_Institution :
IBM T.J. Watson Res. Center, Yorktown Heights, NY, USA
fYear :
1993
fDate :
1993
Firstpage :
358
Lastpage :
362
Abstract :
A new circuit configuration, the differential cascode voltage switch with the pass-gate logic tree (DCVSPG), is presented. In this circuit family, the authors use the pass-gate logic tree to replace the nMOS logic tree in the conventional DCVS circuit in order to eliminate the floating-node problem. By eliminating the floating-node, the DCVSPG shows superior performance, silicon area and power consumption. Moreover, the dynamic DCVSPG also provides the leverage of relieving the charge redistribution concern and reinforces the signal integrity in the typical pre-charge dynamic circuits. The principle of operation of the DCVSPG is explained. A simple synthesis technique of the pass-gate logic tree is discussed. Finally, a 64-bit carry look-ahead adder is designed by using the static DCVSPG circuit. A nominal cycle time (Ta=22 degrees C and power supply of 2.5 V) of 2.0 ns is obtained by using a 0.5 mu m CMOS technology.
Keywords :
CMOS integrated circuits; adders; integrated logic circuits; logic design; semiconductor switches; 0.5 micron; 2 ns; 2.5 V; 22 C; 64 bit; CMOS digital systems; CMOS technology; carry look-ahead adder; charge redistribution; differential cascode voltage switch; dynamic DCVSPG; floating-node problem; nMOS logic tree; nominal cycle time; pass-gate logic tree; power consumption; precharge dynamic circuit; signal integrity; static DCVSPG circuit; synthesis technique; CMOS logic circuits; CMOS technology; Digital systems; Energy consumption; Logic circuits; MOS devices; Silicon; Switches; Switching circuits; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
VLSI Technology, Systems, and Applications, 1993. Proceedings of Technical Papers. 1993 International Symposium on
Conference_Location :
Taipei, Taiwan
ISSN :
1524-766X
Print_ISBN :
0-7803-0978-2
Type :
conf
DOI :
10.1109/VTSA.1993.263680
Filename :
263680
Link To Document :
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