Ultra-Low-Voltage (ULV) System-on-a-Chips (SoCs) are a growing research interest to fullfil the energy efficiency requirements of the wireless sensor node applications featuring sleep power below 1μW. ULP mixed-signal SoCs require a voltage reference robust to temperature, supply voltage and process variations. We propose a 9.7nW voltage reference based on a DVT architecture in 65nm LP/GP CMOS. Silicon measurements demonstrate functionality down to a record breaking 0.2V supply voltage.
de Streel, G., De Vos, J., & Bol, D. (2015). A DeltaVT 0.2V to 1V 0.01mm2 9.7nW Voltage Reference in 65nm LP/GP CMOS. Proceedings of S3S 2015, 2. https://hdl.handle.net/2078.5/253194