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# Susceptibility Issues

## More I/Os, less noise margin

Susceptibility of integrated circuits to external perturbations is a key problem. The technology scale down offers the design of more complex integrated circuits, with more input/outputs. This means that the external interfacing is increased, leading to more possibilities for external signals to interfere with the circuit. Moreover, the supply voltage is continuously increased, for reliability and low power requirements, which tends to reduce the noise margin of the IC and increase its susceptibility to external electromagnetic waves.

## More complex Ics, more levels in susceptibility

An external electromagnetic wave may couple to the input/output interfaces of the integrated circuit, and possibly generate a hardware fault. In some cases, the fault may induce a software failure, leading to a function loss. If the system dependability is not properly handled, the function loss may cause a system failure.

EMC for ICs > EMC Issues > Susceptibility Issues |