ADUM1401ARWZ-RL

四通道数字隔离器 Quad-Channel Digital Isolators

Product Details

The ADuM1401 is a quad-channel digital isolator with 3/1 channel directionality 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.

By avoiding the use of LEDs and photodiodes, _i_Coupler devices remove the design difficulties commonly associated with opto-couplers. The typical optocoupler concerns regarding uncertain current transfer ratios, nonlinear transfer functions, and temperature and lifetime effects are eliminated with the simple _i_Coupler digital interfaces and stable performance characteristics.

The need for external drivers and other discrete components is eliminated with these _i_Coupler products. Furthermore, iCoupler devices consume one-tenth to one-sixth of the power of optocouplers at comparable signal data rates.

The ADuM1400/ADuM1401/ADuM1402 isolators provide four independent isolation channels in a variety of channel configurations and data rates see the Ordering Guide in the data sheet. 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. In addition, the ADuM1400/ADuM1401/ADuM1402 provide low pulse width distortion <2 ns for CRW grade and tight channel-to-channel matching <2 ns for CRW grade. Unlike other optocoupler alternatives, the ADuM1400/ADuM1401/ADuM1402 isolators have a patented refresh feature that ensures dc correctness in the absence of input logic transitions and when power is not applied to one of the supplies.

**Applications**

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General-purpose multichannel isolation

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SPI interface/data converter isolation

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RS-232/RS-422/RS-485 transceivers

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Industrial field bus isolation

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Automotive systems

### Features and Benefits

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Qualified for automotive applications

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Low power operation

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Bidirectional communication

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3 V/5 V level translation

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High temperature operation: 125°C

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High data rate: dc to 90 Mbps NRZ

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Precise timing characteristics

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High common-mode transient immunity:

>25 kV/μs

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See data sheet for additional features