Op amp output short circuit protection method circuit diagram

Published:2011/8/4 21:01:00 Author:Rebekka | Keyword: Op amp, output short circuit, protection method | From:SeekIC

The protection method of the op amp's output short circuit is simple. It only needs to connect a small resistor R in series at the op amp output, the output short-circuit failure can be avoided. It is shown as above. If the resistor is connected to the internal feedback loop, it will have no influence on any performance but the voltage will decrease obviously(When the load is 2kΩ, the value is shown in the figure, Vo can be decreased by 10%). Another advantage of this circuit is: The circuit is also very stable for the external capacitive load. Even if the integrated operational amplifier has been added within the current limiting resistor, a small resistor should also be added at the external op amp output end.



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