Implementation of a Low Voltage Common Source Common Gate Band-Gap Reference Voltage Source with a Soft Start Circuit

摘要

This paper presents a band gap voltage reference circuit with soft start circuit design, 0.5 m 2P3M BiCMOS based on Process, and the use of low-voltage cascode current mirror structure to reduce the dependence on the voltage of the power supply, to eliminate the contradiction between precision and remaining, but also increase the soft start circuit, thus to reduce the current reference circuit at startup, protect the normal starting work circuit, and use the HL50S-S3.1S.lib library file has been simulated by HSPICE, the power supply rejection is about -78.9dB than PSRR.