Patent ID: 6028472
Filing Date: 2000-02-22
Classification: B41J,H01L

Abstract:
A temperature-sensing circuit, comprising:a first bipolar transistor exposed to a temperature to be sensed;a second bipolar transistor exposed to said temperature to be sensed, differing in size from said first bipolar transistor, and generating a transistor output signal;a converting element for converting current to voltage, thereby generating a voltage output signal of the temperature-sensing circuit; anda current mirror circuit coupled to said first bipolar transistor, said second bipolar transistor, and said converting element, having a plurality of MOS transistors supplying mutually corresponding currents to said first bipolar transistor, said second bipolar transistor, and said converting element responsive to said transistor output signal, thereby determining base-emitter voltages of said first bipolar transistor and said second bipolar transistor.