Signal Isolation Technology

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Signal Isolation Technology [Copy link]

Signal isolation allows digital or analog signals to be transmitted without a galvanic connection across the barrier between the transmitter and receiver. This allows the difference between the ground or reference levels outside the transmitter and receiver to be as high as several thousand volts, and prevents loop currents between different ground potentials that could damage the signal. Noise on the signal ground can cause signal corruption. Isolation can separate the signal to a clean signal subsystem ground. In another application, an electrical connection between reference levels can create a current path that is unsafe for operators or patients. The nature of the signal can indicate to the circuit designer the correct ICs to consider for the system.