A Low Temperature Coefficient and Low Power Voltage Detector for Energy Harvesting

A voltage detector with low temperature coefficient (TC) and low power for energy harvesting applications is proposed in this paper. The detection voltage is adjusted by bias, avoiding excessive transistor size. Meanwhile, the temperature dependent term is eliminated by adjusting the transistor size. Proposed voltage detector is implemented in a standard 180nm CMOS process. The simulated results show that the voltage detector consumes 78pA from a 1V supply, the TC of the proposed voltage detector is 0.26mV/°C at ff corner and 0.08mV/C at ff corner, which indicate 5x performance enhancement without significant power consumption.