This paper proposes a process, voltage, temperature (PVT) independent Schmitt trigger with fully adjustable hysteresis threshold voltages. These characteristics are attributed to the proposition of a self-tuning circuit in the inverter-comparator, along with a feedback controlling network for hysteresis characteristic. The proposed Schmitt trigger is designed and fabricated with SMIC 0.13 µm CMOS technology. It has much less power consumption of only 2.51 µW, and features also an adjustable

more »

... eresis threshold voltages ranging from 350 mV to 850 mV at a minimum supply voltage of 1.0 V. All these advantages make it very suitable to work as 1-bit digitization in a low power sensing node.