초록 ▼

A temperature sensing apparatus (200), includes a temperature sensor (220), a current source (203), and a temperature independent voltage source (240, 250). The current source (203) provides a biasing current to the temperature sensor (220), and the voltage source (240, 250) is programmable to adjus

A temperature sensing apparatus (200), includes a temperature sensor (220), a current source (203), and a temperature independent voltage source (240, 250). The current source (203) provides a biasing current to the temperature sensor (220), and the voltage source (240, 250) is programmable to adjust the output of the temperature sensor (220). Preferably, the voltage source (240, 250) includes a variable current source (240) and a resistive element (250) with counterbalanced temperature coefficients, and the bias current source (203) is selected to have a counterbalancing temperature coefficient to that of the resistive element (250).

대표청구항 ▼

[ What is claimed is:] [1.] An apparatus for sensing temperature, comprising:a temperature sensor having first and second terminals;a constant current source coupled to the first terminal of the temperature sensor and providing a biasing current; anda voltage source coupled to the second terminal of

[ What is claimed is:] [1.] An apparatus for sensing temperature, comprising:a temperature sensor having first and second terminals;a constant current source coupled to the first terminal of the temperature sensor and providing a biasing current; anda voltage source coupled to the second terminal of the temperature sensor, wherein the voltage source is programmable and temperature independent.