ELECTRONIC DEVICE

• Main Author: SHIMIZU TAKUMI
• Format: Patent
• Language: English; Japanese
• Published: 17.01.2019
• Subjects: CONTROLLING; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; REGULATING; SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES; TESTING

To provide an electronic device that can output a reference voltage from a reference power source if there is a wide range that an output voltage Vbat of a base power source 10 can take.SOLUTION: An electronic device 20, which is applied to a control system having a base power source 10, includes: a first AD converter 31 and a second AD converter 32 as power supply target devices; a first reference power source 21 and a second reference power source 22, which can output reference voltages Vref1 and Vref2 to the first AD converter 31 and the second AD converter 32 so that the first AD converter 31 and the second AD converter 32 can use the voltages, using an operation voltage supplied from the base power source 10 as an input, the lowest operation voltage of the first reference power source 21 and the lowest operation voltage of the second reference power source 22 being different.SELECTED DRAWING: Figure 1 【課題】本発明は、ベース電源１０の出力電圧Ｖｂａｔが取り得る範囲が広い場合であっても、基準電源から基準電圧を出力することができる電子装置を提供する。【解決手段】ベース電源１０を備える制御システムに適用される電子装置２０は、給電対象機器である第１，第２ＡＤ変換器３１，３２と、ベース電源１０から供給される作動電圧を入力として、第１，第２ＡＤ変換器３１，３２で用いられる基準電圧Ｖｒｅｆ１，Ｖｒｅｆ２を第１，第２ＡＤ変換器３１，３２に出力可能な第１，第２基準電源２１，２２と、を備えている。ここで、第１基準電源２１の最低作動電圧と、第２基準電源２２の最低作動電圧とは異なっている。【選択図】 図１