Patent ID: 8816756
Filing Date: 2014-08-26
Classification: G05F

Abstract:
1. A circuit for generating a temperature-stabilized reference voltage on a semiconductor chip, comprising: a differential pair comprising a first bipolar junction transistor and a second bipolar junction transistor; a feedback circuit comprising an amplification stage and configured to control a first current flowing through the first bipolar junction transistor and a second current flowing through the second bipolar junction transistor; a first resistor connected between an emitter of the first bipolar junction transistor and an emitter of the second bipolar junction transistor, thereby generating a proportional to absolute temperature (PTAT) voltage across the first resistor; and a current source forcing a partial current having a complementary to absolute temperature (CTAT) behavior through the first resistor, wherein the current source comprises a current injection resistor connected between an output of the amplification stage and the first resistor.