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The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
Please note that this cross reference is based on TOSHIBA's estimate of compatibility with other manufacturers' products, based on other manufacturers' published data, at the time the data was collected.
TOSHIBA is not responsible for any incorrect or incomplete information. Information is subject to change at any time without notice.
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不同类型的电流隔离有哪些优缺点？
电流隔离是指对在不同电位下运行的系统实施电气隔离的方法。有多种方法可实现此目的，例如光学隔离、电容隔离、磁隔离和机械隔离。
下表显示了各种隔离方法的比较。数字隔离器在外部磁场或CMTI方面存在一些弱点。然而，东芝通过利用独特的隔离变压器电路，为产品提供了抵抗外部磁场的强大性能。
| 光耦 | 数字隔离器 | ||
|---|---|---|---|
| 耦合 | 光耦合  |
磁耦合
|
电容耦合  |
| 优点 | 可靠隔离 多通道，高EMC |
使用寿命长、传输速率快、 多通道，高CMTI |
使用寿命长、传输速度快 |
| 缺点 | 传输速率限制（最大值50Mbps） | 对抗外部磁场方面的缺点*（EMC） | CMTI的缺点 |
*：采用我们专有方法来防止外部磁场产生的噪音。
关于标准数字隔离器产品，请参考以下链接。
