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How to reduce crosstalk between modules in an intelligent low-voltage monitoring unit?

Time：2025-12-19 Views：510次

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Inter-module crosstalk is reduced through independent power supply and interface isolation.

Independent power supply: Each module uses an independent DC-DC converter.

Interface isolation: Inter-module communication uses an ADUM1410 digital isolator (3kVrms).

PCB design: Modules are isolated using a 1.5mm wide grounded guard ring. Interface signal lines use differential transmission. Metal partitions are added between modules within the chassis. This design reduces inter-module crosstalk by more than 25dB, meeting the IEC 61000-4-6 conducted immunity 10V test requirements.

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