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• ADuM440x Series, 5kV rms Quad Channel Digital Isolators, Analog Devices. The ADuM440x series from Analog Devices is a range of quad channel digital isolators incorporating Analog Devices ‘ iCoupler® technology. Superior performance over optocouplers and other integrated coupler devices is offered through the combination of high speed CMOS and monolithic air core transformer technology in these isolation components. Features. High isolation voltage; 5000 Vrms Enhanced system-level ESD performance per IEC 61000-4-x Low power operation Bidirectional communication 3V to 5V level translation Precise timing characteristics High common-mode transient immunity: >25kV/μs Output enable function Precise timing characteristics. Typical Applications. General purpose, high voltage, multi-channel isolation Medical equipment Power supplies Motor drives