The Role of Digital Isolators

Digital isolators are designed to reduce ground loop noise, and galvanic isolation ensures that data transmission is not through electrical connections or leakage paths, thereby avoiding safety risks.

A digital isolator is a chip that has high resistance isolation characteristics when digital signals and analog signals are transmitted in an electronic system to achieve isolation between the electronic system and the user. Designers introduce isolation to, for example, meet safety regulations or reduce noise from ground loops. Galvanic isolation ensures that data transmission is not via electrical connections or leakage paths, thereby avoiding safety risks. However, isolation imposes limitations in latency, power consumption, cost, and size. The goal of a digital isolator is to meet safety requirements while minimizing adverse effects.