ADUM2281BRIZ

ANALOG DEVICES  ADUM2281BRIZ  数字隔离器, 2通道, 39 ns, 2.7 V, 5.5 V, WSOIC, 16 引脚

Product Details

TheADuM2280/ADuM2281/ADuM2285/ADuM2286 also referred to as ADuM228x in this data sheet are 5 kV rms dual-channel digital isolators based on Analog Devices, Inc., _i_Coupler® technology. Combining high speed CMOS and monolithic air core transformer technology, these isolation components provide outstanding performance characteristics superior to alternatives, such as optocoupler devices and other integrated couplers.

With propagation delay at 24 ns maximum, pulse width distortion is less than 2 ns for C grade. Channel-to-channel matching is tight at 5 ns for C grade. ADuM228x are available in two channel configurations with three different data rates up to 100 Mbps see the Ordering Guide. All models 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. Unlike other optocoupler altern-atives, the ADuM228x isolators have a patented refresh feature that ensures dc correctness in the absence of input logic transitions. When power is first applied or is not yet applied to the input side, the ADuM2280 and ADuM2281 have a default high output and the ADuM2285 and ADuM2286 have a default low output.

**Applications**

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General-purpose, high voltage, multichannel isolation

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Medical equipment

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Power supplies

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RS-232/RS-422/RS-485 transceiver isolation

### Features and Benefits

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High isolation voltage: 5000 V rms

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Up to 100 Mbps data rate

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Low propagation delay: 24 ns maximum

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Low dynamic power consumption

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Bidirectional communication

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3 V to 5 V level translation

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High temperature operation: 125°C

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High common-mode transient immunity: >25 kV/μs

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Default high output: ADuM2280/ADuM2281

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Default low output: ADuM2285/ADuM2286

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16-lead SOIC wide body enhanced creepage package

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See data sheet for additional features