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A 200mV 32b subthreshold processor with adaptive supply voltage control

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4 Author(s)
Sven Luetkemeier ; University of Paderborn, Paderborn, Germany ; Thorsten Jungeblut ; Mario Porrmann ; Ulrich Rueckert

In recent years, subthreshold operation has become a research focus for digital systems with limited energy budget (e.g. mobile, battery-powered devices, radio frequency identification (RFID), wireless sensor networks, or biomedical applications). Subthreshold operation allows for such low power consumption by reducing the supply voltage of the circuit below the threshold voltage of the transistors. As dynamic power depends quadratically on supply voltage, and static power depends exponentially on supply voltage, considerable power savings are achieved. At the same time propagation delays increase due to reduced transistor currents. Effectively, energy consumption per cycle can typically be reduced by a factor of 10 using subthreshold operation.

Published in:

2012 IEEE International Solid-State Circuits Conference

Date of Conference:

19-23 Feb. 2012