Poojitha, C.Rekha, S.2026-02-0620232023 IEEE International Conference on Distributed Computing, VLSI, Electrical Circuits and Robotics, DISCOVER 2023, 2023, Vol., , p. 61-64https://doi.org/10.1109/DISCOVER58830.2023.10316722https://idr.nitk.ac.in/handle/123456789/29350A constant current reference circuit that is independent of temperature is proposed in this paper. This circuit is derived from two circuit blocks having opposite temperature coefficients (TC). A conventional Beta multiplier circuit which generates a proportional to absolute temperature (PTAT) current and a proposed complementary to absolute temperature (CTAT) current circuit are used to generate a constant current that is independent of temperature. The circuit exhibits a very low temperature coefficient of 62.97 ppm/oC. This circuit can be used to generate flexible values of constant current in a temperature range of 10 to 80 C with a 1.8 V supply voltage. Proposed design is validated using Cadence Virtuoso tool with a 180nm standard CMOS process. © 2023 IEEE.Constant reference currentCTATPTATPVT variations