Sensor Input

Circuit Protection of Sensor Input

Solutions:

Protection Application:: The sensor input provides an interface between the patient and the measurement circuits. The electrical threat will be ESD.
Solution Description:: As shown at the left, a single multilayer varistor is used to protect the sensor input.
Companion Solutions:: Higher-voltage ratings are available. For ultra-low leakage current requirements, the PulseGuard technology can be used.
Regulatory Issues:: The IEC 61000-4-2 will be the most appropriate standard that applies for this circuit. It supplies a test method for verifying that the end product is not susceptible to ESD events.
Unique Features:: Does not apply.
Application Warnings:: Does not apply.