Voltage reference circuit

摘要

Provided is a voltage reference circuit which is able to obtain high PSRR without a variation in power-supply voltage and an influence of noise. A voltage reference circuit for performing voltage-current conversion on forward voltages of PN junction elements and on a difference therebetween to generate a voltage so as not to depend on a temperature is constituted by an amplifier for controlling a temperature characteristic of a voltage of an output terminal, a source follower circuit for supplying a power to the amplifier, and a PMOS transistor which is controlled by the amplifier and which controls a current to flow into the PN junction elements.

主权项

1. A voltage reference circuit for performing voltage-current conversion on a difference between forward voltages of a plurality of PN junction elements to generate a less temperature-dependent voltage, the voltage reference circuit comprising:
a voltage-current converting circuit for controlling a current to flow into the plurality of PN junction elements; and a source follower circuit for supplying a power to the voltage-current converting circuit.