Temperature sensor
First Claim
1. A temperature sensor for measuring temperatures within a defined temperature measuring range, comprising:
- a reference voltage source with an output terminal receiving a reference voltage;
a comparing element with a first input terminal connected to said reference voltage source, and a second input terminal;
first and second supply terminals carrying a supply voltage adjustable within a defined supply voltage range;
a series circuit of a measuring element and a reference component connected between said first and second supply terminals, whereby a node common to said measuring element and said reference component receives a temperature-dependent voltage and is connected with said second input terminal of said comparing element; and
said reference component having a voltage-dependent current characteristic within a voltage range of a voltage across the reference component determined by the defined supply voltage range.
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Accused Products
Abstract
The temperature sensor measures temperatures within a defined temperature measuring range. The sensor includes a reference voltage source with an output terminal to which a reference voltage is applied and which is connected to a first input terminal of a comparator. A series circuit of a semiconductor component with temperature-independent current characteristic and a reference component is connected between a first and a second supply voltage terminal. A temperature-dependent voltage is applied to a node common to the semiconductor component and the reference component. The temperature-dependent voltage is fed to a second input terminal of the comparator. The supply voltage is adjustable within a defined supply voltage range and, within a voltage range resulting from the supply voltage range of a voltage across the reference component, the reference component has a voltage-dependent current characteristic.
55 Citations
11 Claims
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1. A temperature sensor for measuring temperatures within a defined temperature measuring range, comprising:
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a reference voltage source with an output terminal receiving a reference voltage;
a comparing element with a first input terminal connected to said reference voltage source, and a second input terminal;
first and second supply terminals carrying a supply voltage adjustable within a defined supply voltage range;
a series circuit of a measuring element and a reference component connected between said first and second supply terminals, whereby a node common to said measuring element and said reference component receives a temperature-dependent voltage and is connected with said second input terminal of said comparing element; and
said reference component having a voltage-dependent current characteristic within a voltage range of a voltage across the reference component determined by the defined supply voltage range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification