Input current protection circuit diagram using INA321/322

Published:2012/10/17 21:14:00 Author:Ecco | Keyword: Input current , protection | From:SeekIC

INA321/322 input end's interior has electrostatic discharge (ESD) protection diode, and the protection diode will get conduction when the input voltage exceeds the supply voltage 500mV, then RLIM will limit the input current ( 10mA ) to play a role in the protection circuit. Many input signals have limited streaming capabilities, at the time, the current limiting resistor RLIM can be ignored.



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