INA199: 使用INA199A2运放做高端电流采样。未开机情况下，插入电池在主板上的3V3和GND之间出现50mv的压差

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Taylor：

您好，

已经收到了您的案例，调查需要些时间，感谢您的耐心等待。

,

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对于第一种情况、我们是否认为部件断电但电池连接到器件的输入端时会出现问题？ 在此期间基准电压是否也已通电？ 假设这里在 C1498两端测量电压、我是否正确？ 

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您是否说当 INA199处于未通电状态时、客户看到 VCC 引脚上出现50mV 的电压？ 由于通过器件的寄生路径、这似乎合理。 器件为非隔离式、当处于未上电状态时、存在寄生路径、如果器件出现在输入引脚上、则可能允许少量共模电压通过器件传播。 这不会对器件造成损坏、如果3.3V 节点上加载了任意数量的电流、电压应会崩溃、因为无法通过器件提供电流。 客户是否关心电源节点上的电压？

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English

Arabic
Hebrew
Polish

Bulgarian
Hindi
Portuguese

Catalan
Hmong Daw
Romanian

Chinese Simplified
Hungarian
Russian

Chinese Traditional
Indonesian
Slovak

Czech
Italian
Slovenian

Danish
Japanese
Spanish

Dutch
Klingon
Swedish

English
Korean
Thai

Estonian
Latvian
Turkish

Finnish
Lithuanian
Ukrainian

French
Malay
Urdu

German
Maltese
Vietnamese

Greek
Norwegian
Welsh

Haitian Creole
Persian

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