Abstract
A high PSRR CMOS voltage reference circuit suitable for applications with noisy environments like power telemetry solutions and system on a chip (SOC) integrations is presented. The reference voltage is generated based on the difference between weighted gate-to-source voltages (VGS) of MOS transistors operating in subthreshold region. The circuit PSRR is improved using a new circuit configuration which removes the need for a passive resistive branch to scale up VGS voltages. The PSRR is further enhanced by reordering the pole-zero locations of the PSRR transfer function and then using supply-independent biasing circuit. Implemented in a 0.18μm standard CMOS process, the circuit occupies an area of about 0.035mm2. The minimum supply voltage is 1.4V and the maximum temperature coefficient is about 82ppm/°C. The PSRR at 100Hz and 10MHz frequencies are approximately −70dB and −100dB respectively. Using a 1.8V supply voltage, it consumes at least 42nA and at most 125nA depending on operating temperature and process corners.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: AEUE - International Journal of Electronics and Communications
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
