Title :
A variation-tolerant sub-threshold design approach
Author :
Jayakumar, Nikhil ; Khatri, Sunil P.
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
Abstract :
Due to their extreme low power consumption, subthreshold design approaches are appealing for a widening class of applications which demand low power consumption and can tolerate larger circuit delays. However, subthreshold circuits are extremely sensitive to variations in supply, temperature and processing factors. In this paper, we present a subthreshold design methodology which dynamically self-adjusts for inter and intra-die process, supply voltage and temperature (PVT) variations. This adjustment is achieved by performing bulk voltage adjustments in a closed-loop fashion, using a charge pump and a phase-detector.
Keywords :
VLSI; integrated circuit design; logic design; programmable logic arrays; PVT variations; bulk voltage adjustments; charge pump; circuit delays; extreme low power consumption; interdie process; intradie process; phase-detector; processing factors variations; self-adjusting subthreshold design; subthreshold circuits; supply voltage variations; temperature variations; variation-tolerant sub-threshold design; Charge pumps; Circuits; Delay; Design methodology; Energy consumption; Permission; Sun; Temperature sensors; Very large scale integration; Voltage;
Conference_Titel :
Design Automation Conference, 2005. Proceedings. 42nd
Print_ISBN :
1-59593-058-2
DOI :
10.1109/DAC.2005.193905