Circuit for outputting reference voltage

Abstract

A circuit for outputting reference voltage includes: a detecting unit, a feedback unit and an output unit which are respectively connected with an external power source, wherein a plurality of field effect transistors (FETs) are provided in the detecting unit, wherein the detecting unit is for detecting foundry corners of the FETs therein, the feedback unit is for feeding back and comparing a detecting result of the detecting unit, and outputting information after feeding back and comparing, and the output unit is for outputting reference voltage corresponding to the foundry corners of the FETs to an external output terminal. The reference voltage outputted by the circuit for outputting reference voltage of the present invention is capable of varying with foundry corners of the FETs, and achieves compensating for foundry corners of the FETs.

Dependencies are inferred from the claim text.