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Description: Dual-Channel, Digital Isolators, Enhanced System-Level ESD Reliability
Manufacturer:Analog Devices
Datasheet:PDF (525K).
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The ADuM320x 1 are dual-channel, digital isolators based on Analog Devices' iCoupler technology. Combining high speed CMOS and monolithic transformer technology, these isolation components provide outstanding performance characteristics superior to alternatives such as optocoupler devices. By avoiding the use of LEDs and photodiodes, iCoupler devices remove the design difficulties commonly associated with optocouplers. The typical optocoupler concerns regarding uncertain current transfer ratios, nonlinear transfer functions, and temperature and lifetime effects are eliminated with the simple iCoupler digital interfaces and stable performance characteristics. The need for external drivers and other discrete components is eliminated with these iCoupler products. Furthermore, iCoupler devices consume one-tenth to one-sixth the power of optocouplers at comparable signal data rates. The ADuM320x isolators provide two independent isolation channels in a variety of channel configurations and data rates (see the Ordering Guide). Both parts operate with the supply voltage on either side ranging from 2.7 V to 5.5 V, providing compatibility with lower voltage systems as well as enabling a voltage translation functionality across the isolation barrier. The ADuM320x isolators have a patented refresh feature that ensures dc correctness in the absence of input logic transitions and during power-up/power-down conditions. In comparison to the ADuM120x isolators, the ADuM320x isolators contain various circuit and layout changes to provide increased capability relative to system-level IEC 61000-4-x testing (ESD, burst, surge). The precise capability in these tests for either the ADuM120x or ADuM320x products is strongly determined by the design and layout of the user's board or module. For more information, see Application Note AN-793, ESD/Latch-Up Considerations with iCoupler Isolation Products.

Click here to download ADUM3201CRZ Datasheet
Click here to download ADUM3201CRZ Datasheet
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