Single-Branch Wide-Swing-Cascode Subthreshold GaN Monolithic Voltage Reference

Author:

Bimbi Cesare,Pennisi SalvatoreORCID,Privitera Salvatore,Pulvirenti FrancescoORCID

Abstract

A voltage reference generator in GaN IC technology for smart power applications is described, analyzed, and simulated. A straightforward design procedure is also highlighted. Compared to previous low-power monolithic solutions, the proposed one is based on a single branch and on transistors operating in a subthreshold. The circuit provides a nearly 2.7 V reference voltage under 4 V to 24 V supply at room temperature and with typical transistor models. The circuit exhibits a good robustness against large process variations and improves line regulation (0.105 %V) together with a reduction in area occupation (0.05 mm2), with a reduced current consumption of 2.7 µA (5 µA) in the typical (worst) case, independent of supply. The untrimmed temperature coefficient is 200 ppm/°C.

Publisher

MDPI AG

Subject

Electrical and Electronic Engineering,Computer Networks and Communications,Hardware and Architecture,Signal Processing,Control and Systems Engineering

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