Patent ID: 6183131
Filing Date: 2001-02-06
Classification: G01K

Abstract:
A temperature sensor comprising:a reference voltage circuit producing a reference voltage;a thermometer circuit producing a temperature dependent correction voltage;a first summing circuit coupled to said reference voltage circuit and said thermometer circuit, said first summing circuit producing a voltage output signal that is the sum of said correction voltage and said reference voltage;a normalizing circuit receiving said voltage output signal and a temperature dependent voltage;an amplifier circuit coupled to said normalizing circuit, said amplifying circuit producing a scaling factor, wherein said normalizing circuit produces a temperature output signal by generating a ratio of said temperature dependent voltage and said voltage output signal multiplied by said scaling factor; anda second summing circuit coupled to said normalizing circuit and receiving said temperature output signal, said second summing circuit summing said temperature output signal with a temperature offset correction factor to generate a corrected temperature output signal.