Patent ID: 7901134

Claim:
A semiconductor temperature sensor, comprising: a constant current circuit for causing a constant current to flow; a Darlington circuit having a plurality of first bipolar transistors which are in Darlington connection, for outputting an output voltage based on the constant current and temperature, the Darlington circuit having a leakage current generated therein at bases of the plurality of first bipolar transistors based on the temperature; a first current mirror circuit having a plurality of current-mirror connected first transistors, for supplying a current based on the constant current to emitters of the plurality of first bipolar transistors of the Darlington circuit; a leakage current compensation circuit having a second bipolar transistor, for causing a leakage current compensation current to flow through a base of the second bipolar transistor based on the leakage current; and a second current mirror circuit having a plurality of current-mirror connected second transistors, for supplying a current based on the leakage current compensation current to the bases of the plurality of first bipolar transistors.