Understanding Electromagnetic Compliance Tests in Digital Isolators
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Understanding Electromagnetic Compliance Tests in Digital Isolators
This white paper explains the importance of evaluating electromagnetic compliance when selecting digital isolators for industrial systems. It highlights how harsh conditions like electrostatic discharge, radiated fields, and fast transients affect isolator performance, and emphasizes using realistic test setups instead of artificially optimized boards. Key EMC tests include ESD immunity, radiated and conducted susceptibility, EFT, and emissions, based on IEC standards such as IEC 61000‑4‑2/3/4/6 and CISPR22. The paper also discusses common-mode transient immunity (CMTI) and pass‑fail criteria, stressing accurate assessment of true device capability to ensure reliable system performance in noisy environments.
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