Design of an Op-Amp Free Voltage Reference with PWM Regulation

Basyurt P. B., Bonizzoni E., Maloberti F., Aksin D. Y.

European Conference on Circuit Theory and Design (ECCTD), Trondheim, Norway, 24 - 26 August 2015, pp.89-92 identifier

  • Publication Type: Conference Paper / Full Text
  • City: Trondheim
  • Country: Norway
  • Page Numbers: pp.89-92
  • Istanbul Technical University Affiliated: Yes


This paper presents the design of an op-amp free voltage reference generator which utilizes a pulse width regulated loop. The proposed voltage reference circuit has been designed and simulated in a standard 0.18-mu m CMOS technology. Post layout simulation results show that it is capable of operating with supply voltages down to 0.7 V while generating an output voltage of 202 mV. The achieved temperature coefficient is 54 ppm/degrees C for temperatures ranging from 0 to 100 degrees C. The simulated power consumption at the room temperature is 400 nW.