Temperature sensor device
AssigneeAblic Inc.
InventorsTsutomu TOMIOKA, Tadakatsu KURODA, Makoto MITANI, Naohiro HIRAOKA
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Abstract
A temperature sensor device is capable of measuring minute temperature changes while being manufactured at low cost without needing a high performance IC tester. A temperature sensor device includes a temperature sensor circuit 2 and a temperature sensor 1. The temperature sensor 1 includes a PN junction element 15 which is a temperature sensing element, a variable current source which supplies different forward currents of at least two values to the PN junction element 15 and a constant voltage source 16 which outputs a constant voltage having the same temperature properties as a forward voltage of the PN junction element 15.
Claims4
A temperature sensor device, comprising:
- a temperature sensor circuit;
- and
- a temperature sensor,
- wherein the temperature sensor comprises
- a PN junction element, configured to be a temperature sensing element,
- a variable current source, configured to supply different forward currents of at least two values to the PN junction element, and
- a constant voltage source, configured to output a constant voltage having the same temperature properties as a forward voltage of the PN junction element.
Dependencies are inferred from the claim text.