ELECTRONIC CIRCUIT AND SENSOR SYSTEM

• Main Authors: NAKAGAWA SHIGEO, SATO TAKAO, KOTABE AKIRA
• Format: Patent
• Language: English; Japanese
• Published: 23.04.2020
• Subjects: BASIC ELECTRIC ELEMENTS; BASIC ELECTRONIC CIRCUITRY; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; PULSE TECHNIQUE; SEMICONDUCTOR DEVICES

To provide an electronic circuit that comprises an output circuit capable of reducing breakage while satisfying characteristics of an output signal.SOLUTION: An electronic circuit comprises: output signal generation elements 201 and 202 that generate an output signal; switches 203 and 204; and a voltage monitor circuit 205 that monitors a voltage applied to an output terminal 112. Here, the output signal generation elements 201 and 202 are connected with the output terminal 112 via the switches 203 and 204. The voltage monitor circuit 205 is configured to be able to measure a voltage higher than a power supply voltage VDD connected with the output signal generation element 201, and when the voltage of the output terminal 112 becomes equal to or more than a predetermined value that is set to be higher than the power supply voltage VDD, controls the switches 203 and 204 to disconnect the output signal generation elements 201 and 202 from the output terminal 112.SELECTED DRAWING: Figure 2 【課題】出力信号の特性を満たしつつ、破壊されるのを低減することが可能な出力回路を備えた電子回路を提供する。【解決手段】電子回路は、出力信号を生成する出力信号生成素子２０１、２０２と、スイッチ２０３、２０４と、出力端子１１２に印加される電圧をモニタする電圧モニタ回路２０５を備える。ここで、出力信号生成素子２０１、２０１は、スイッチ２０３、２０４を介して出力端子１１２に接続されており、電圧モニタ回路２０５は、出力信号生成素子２０１と接続している電源電圧ＶＤＤよりも高い電圧を測定可能に構成され、出力端子１１２の電圧が、電源電圧ＶＤＤよりも高く設定された所定の値以上になったときに、出力信号生成素子２０１、２０２と出力端子１１２の接続を切るようにスイッチ２０３、２０４を制御する。【選択図】図２