Analysis and Design of Low Voltage CMOS Bandgap Reference

The design of CMOS bandgap voltage reference with low power supply in temperature compensaion and current compensation technology is described in this paper.The differential amplifier is used for bandgap reference negative feedback amplifier,which simplifies circuit design.The biasing of PMOS current source is derived from the output voltage of the amplifier,leading to a high pow er supply rejection.The bandgap references are implemented in a standard 0.6 μm CMOS process,The area of layout is 0.41 mm×0.17 mm.The entire circuit is simulated with Cadence Spectre simulation tool,the results show accuracy of the design.