Quad-Channel Digital Isolator (4/0 Channel Directionality)
The ADuM1400 is a quad-channel digital isolator with 4/0 channel directionality, based on Analog Devices, Inc., iCoupler® 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, iCoupler 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 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 of the power of optocouplers at comparable signal data rates.
The ADuM140x family of 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 ADuM140x provides 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 ADuM140x 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.
- General-purpose multichannel isolation
- SPI interface/data converter isolation
- RS-232/RS-422/RS-485 transceivers
- Industrial field bus isolation
- Automotive systems
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Supported iCoupler® Products
Product Selection Guide
Digital Isolator Product Selection and Resource Guide
Product Selection Guide
Automotive Grade Digital Isolators - ADuM120xW/ADuM130xW/ADuM140xW (2008)
Solutions Bulletins & Brochures
Emerging Energy Applications Solutions Bulletin, Volume 10, Issue 4
iCoupler® Digital Isolators Protect RS-232, RS-485, and CAN Buses in...
(Analog Dialogue, Vol. 39, October 2005)
Safety and Regulatory Compliance Information
The iCoupler® family of digital isolation products have been tested and approved by various regulatory agencies,...