MUMBAI, India, Jan. 2 -- Intellectual Property India has published a patent application (202541122191 A) filed by Vellore Institute Of Technology, Vellore, Tamil Nadu, on Dec. 4, 2025, for 'programmable sub-threshold bandgap reference circuit with multi-rail output.'
Inventor(s) include Dr. Arun Dev Dhar Dwivedi; and Mr. Navneet Kumar Dubey.
The application for the patent was published on Jan. 2, under issue no. 01/2026.
According to the abstract released by the Intellectual Property India: "The present disclosure provides a programmable sub-threshold bandgap reference circuit comprising a bandgap core (102) that generates a temperature-compensated reference voltage by combining a complementary-to-absolute-temperature (CTAT) voltage component from a base-emitter voltage of a parasitic vertical PNP transistor and a proportional-to-absolute-temperature (PTAT) voltage component from a voltage difference between two PNP transistors operating at different current densities. An operational transconductance amplifier (OTA) (112) regulates bias currents and provides active feedback for enhanced power supply rejection ratio (PSRR) performance. A startup circuit (104) with stacked PMOS transistors detects zero-current conditions during power-up and injects initial bias current, automatically disabling itself once stable operation is achieved. A programmable multi-rail output network (116) provides selectable voltage rails through digital control signals, isolated by MOSFET switching elements."
Disclaimer: Curated by HT Syndication.
