ADuM2280/ADuM2281/ADuM2285/ADuM2286（本数据手册中亦称为ADuM228x）均为5 kV rms双通道数字隔离器，采用ADI的
iCoupler®技术。这些隔离器件将高速CMOS与单芯片空芯变压器技术融为一体，具有优于光耦合器件和其它集成式耦合器等替代器件的出色性能特征。
These devices have a maximum propagation delay of 24 ns and a Class C pulse width distortion of less than 2 ns. The C class also features a tight channel-to-channel matching of 5 ns. The ADuM228x is available in two channel configurations with 3 different data rates up to 100 Mbps (see ordering guide). All models operate from a 2.7 V to 5.5 V supply voltage, are compatible with low-voltage systems, and are capable of voltage conversion across isolation barriers. Unlike other optocouplers, the ADuM228x isolator has a patented refresh feature that ensures DC correctness in the absence of input logic conversion. When powering up for the first time or when power has not yet been applied to the input, the ADuM2280 and ADuM2281 output high by default, and the ADuM2285 and ADuM2286 output low by default.
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