Publication: A 65nm CMOS constant current reference (CCR) circuit for sensory applications
Loading...
Date
2023-07
Authors
Nishant, Kumaran
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Disclosed is a CMOS constant current reference circuit having a circuit configuration that includes transistors only of the COMS type. The circuit is capable of providing a constant current to a load, regardless of a variation in supply voltage and a variation in temperature. A constant current generating unit generates a constant bias current regardless of a variation of a supply voltage. A self compensation unit controls the constant current generating means to maintain the bias current generated therefrom at a constant level regardless of a variation in temperature. A starting unit establishes a current path adapted to activate the constant current generating unit. A constant current supply unit supplies the bias current generated from the constant current generating unit, at a constant level. Therefore, this paper presents a voltage threshold-based self-bias and can be used for integrated CMOS current source structure. When the power supply voltage changes from 0V to 2.5V, the current source can output 20 current constant currently and enable control terminal also be added that can effectively control the circuit open or closed. The circuit can be good for the other sub-circuit modules to provide a stable DC bias, so that they can work in a suitable quiescent point. Design was using Cadence virtuoso TSMC 65nm technology. The CCR circuit is suitable to be implemented in sensory applications.