Temperature sensor and method of compensating for change in output characteristic due to varying temperature
AssigneeSamsung Electronics Co., Ltd.
InventorHyung-seuk Kim
Life of this patent
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Abstract
Described is a method and apparatus for compensating for a change in an output characteristic of a temperature sensor due to varying temperature. The temperature sensor includes a temperature sensing core, an analog-to-digital converter, a counter, and a temperature compensating circuit. The temperature sensing core generates a sense voltage corresponding to a sensed temperature. The analog-to-digital converter converts the sense voltage into a digital signal and generates a conversion signal. The temperature compensating circuit generates a counter clock signal that varies according to a temperature change. The counter counts the number of pulses of the counter clock signal according to the conversion signal.
Claims19
A temperature sensor comprising:
- a temperature sensing core configured to generate a sense voltage corresponding to a sensed temperature;
- an analog-to-digital converter configured to generate a conversion signal based on the sense voltage;
- a temperature compensating circuit configured to generate a counter clock signal based on changes in temperature;
- and
- a counter configured to generate an output temperature by counting a number of pulses of the counter clock signal according to the conversion signal.
A method of compensating for a change in an output characteristic due to varying temperature by using a temperature sensor, the method comprising:
- generating, by a temperature sensing core associated with the temperature sensor, a sense voltage corresponding to a sensed temperature;
- generating, by an analog-to-digital converter, a conversion signal based on the sense voltage;
- generating, by a temperature compensating circuit, a counter clock signal having a frequency that varies based on changes in temperature;
- and
- counting, by a counter, the number of pulses of the counter clock signal according to the conversion signal.
Dependencies are inferred from the claim text.