SEMICONDUCTOR DEVICE

To provide a semiconductor device capable of accurately detecting temperature in a place away from the semiconductor device.SOLUTION: A semiconductor device comprises an integrated circuit. The integrated circuit includes: a terminal through which a temperature detection element provided outside the...

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Bibliographische Detailangaben
Hauptverfasser: MATSUNAMI KAZUHIRO, ITO YUICHI
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a semiconductor device capable of accurately detecting temperature in a place away from the semiconductor device.SOLUTION: A semiconductor device comprises an integrated circuit. The integrated circuit includes: a terminal through which a temperature detection element provided outside the semiconductor device is coupled; a first resistor that is coupled in series with the temperature detection element through the terminal to configure a voltage divider circuit; a sensing resistor for sensing a sheet resistance having the same attribute as that of the first resistor; a temperature detection circuit for detecting a first temperature of the integrated circuit; a storage circuit that stores a table including first information, for each of a plurality of values of the first temperature, corresponding to the sheet resistance of the first resistor obtained on the basis of a measurement result of the sensing resistor and indicating a relationship between a second temperature of the temperature detection element and a divided voltage of the voltage divider circuit at the second temperature; and an arithmetic circuit that obtains the second temperature on the basis of the first information at the first temperature detected by the temperature detection circuit and the divided voltage of the voltage divider circuit.SELECTED DRAWING: Figure 1 【課題】離れた場所の温度を、精度よく検出できる半導体装置を提供する。【解決手段】集積回路を備える半導体装置であって、前記集積回路は、前記半導体装置の外部に設けられる温度検出素子が接続される端子と、前記端子を介して前記温度検出素子と直列接続されて分圧回路を構成する第1抵抗と、前記第1抵抗と同じ属性のシート抵抗を検出するための検出抵抗と、前記集積回路の第1温度を検出する温度検出回路と、前記検出抵抗の測定結果に基づいて得られた前記第1抵抗のシート抵抗に対応し、前記温度検出素子の第2温度と、前記第2温度における前記分圧回路の分圧電圧との関係を示す第1情報を、複数の前記第1温度毎に含むテーブルを記憶する記憶回路と、前記温度検出回路が検出した前記第1温度における前記第1情報と、前記分圧回路の分圧電圧とに基づいて、前記第2温度を求める演算回路と、を備える。【選択図】図1