Temperature sensing device and calibration method thereof
The present disclosure provides temperature sensing device and calibration method thereof. The temperature sensing device includes current generation circuit, analog-to-digital conversion circuit and processing circuit. The calibration method includes following steps: by the current generation circu...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The present disclosure provides temperature sensing device and calibration method thereof. The temperature sensing device includes current generation circuit, analog-to-digital conversion circuit and processing circuit. The calibration method includes following steps: by the current generation circuit, generating temperature dependent current according to temperature of test object, wherein the temperature dependent current is dependent on reference current passing through adjustable resistor of the current generation circuit; by the analog-to-digital conversion circuit, performing analog-to-digital conversion according to the temperature dependent current, to generate sensing value; by the processing circuit, comparing the sensing value with ideal value; and by the processing circuit, adjusting the resistance of the adjustable resistor according to comparison of the sensing value and the ideal value, so that the sensing value and the ideal value are same. |
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