Title :
A 0.5-V sigma-delta modulator using analog T-switch scheme for the subthreshold leakage suppression
Author :
Ishida, Koichi ; Tamtrakarn, Atit ; Sakurai, Takayasu
Author_Institution :
Center of Collaborative Res., Tokyo Univ.
Abstract :
A 0.5-V sigma-delta modulator implemented in a 0.15-mum FD-SOI process with low VTH of 0.1V using analog T-switch (AT-switch) scheme to suppress subthreshold-leakage problems is presented. The scheme is compared with the conventional circuit, which are also fabricated in the same chip. The measurement result demonstrates that the sigma-delta modulator based on AT-switch realizes 6-bit resolution through reducing nonlinear leakage effects while the conventional circuit can achieve 4-bit resolution
Keywords :
leakage currents; sigma-delta modulation; silicon-on-insulator; switching circuits; 0.1 V; 0.15 micron; 0.5 V; 4 bit; 6 bit; AT-switch scheme; FD-SOI process; analog T-switch scheme; nonlinear leakage effects; sigma-delta modulator; subthreshold leakage suppression; Analog circuits; Circuit synthesis; Delta-sigma modulation; Digital circuits; Logic; Semiconductor device measurement; Subthreshold current; Threshold voltage; Variable structure systems; Very large scale integration;
Conference_Titel :
Design Automation, 2006. Asia and South Pacific Conference on
Conference_Location :
Yokohama
Print_ISBN :
0-7803-9451-8
DOI :
10.1109/ASPDAC.2006.1594655
