A sub-pW timer using gate leakage for ultra low-power sub-Hz monitoring systems

Yu-Shiang Lin, Dennis Sylvester, David Blaauw

2007 · 91 citations · 6 references

Concepts

Abstract

In this work, we present a novel ultra-low power timer designed using the gate leakage of MOS capacitors. The test chip was fabricated in a 0.13 <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">μ</i> m CMOS technology and the total circuit area is 480 <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">μ</i> m <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> . Measurement results show that the circuit functions correctly at a wide range of supply voltages from 300mV to 1.2V, making it particularly suitable for subthreshold systems. The temperature sensitivity is 0.16%/°C at 600mV and 0.6%/°C at 300mV. The power dissipation is less than 1pW running at 20°C and 300mV.

References

6