SMF05C SOT363 ESD electrostatic protection tube 5V
The following is the circuit diagram of [input current protection circuit designed by INA321/322] As shown in the figure, the input current protection circuit consists of INA321/322. The input of the INA321/322 has an electrostatic discharge (ESD) protection diode. When the input voltage exceeds the supply voltage of 500mV, the protection diode will be turned on. At this time, the RLIM will limit the input current (maximum 10mA) to protect the circuit. Many input signals have a finite current function, and the current limiting resistor RLIM can be used.
(Editor: Circuit Diagram)
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