The ADuM1440 is a micropower, quad-channel digital isolator which has a default high and 4/0 channel directionality based on the Analog Devices, Inc., iCoupler® technology. ( Dual-channel products available.) Combining high speed, complementary metal oxide semiconductor (CMOS) and monolithic air core transformer technologies, these isolation components provide outstanding performance characteristics superior to the alternatives, such as optocoupler devices, while requiring the lowest power of any available isolation product. The ENX signals can be used to disable the internal refresh, which lowers the total quiescent current to less than 1 µA.
The ADuM1440/ADuM1441/ADuM1442/ADuM1445/ ADuM1446/ADuM1447 family of quad 2.5 kV digital isolation devices are packaged in a small 16-lead QSOP and 20-lead SSOP. While most 4-channel isolators come in 16-lead wide SOIC packages, the ADuM1440/ ADuM1441/ADuM1442/ADuM1445/ADuM1446/ADuM1447 frees almost 70% of board space and yet can still withstand high isolation voltages and meet regulatory requirements, such as UL and CSA standards (pending). In addition to the space savings, the ADuM1440/ADuM1441/ADuM1442/ADuM1445/ ADuM1446/ADuM1447 operates with supplies as low as 2.25 V.
Despite the low power consumption, all models of the ADuM1440/ ADuM1441/ADuM1442/ADuM1445/ADuM1446/ADuM1447 provide low, pulse width distortion <8 ns. In addition, every model has an input glitch filter to protect against extraneous noise disturbances.
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|ADuM1440/ADuM1441/ADuM1442/ADuM1445/ADuM1446/ADuM1447: Micropower Quad-Channel Digital Isolators Data Sheet (Rev A, 03/2014) (pdf, 426 kB)||Data Sheets|
Industry's Lowest Power Digital Isolators
The ADuM144x family of digital isolators is the industry's lowest power isolators. Capable of up to 2500V of isolation in an ultra-small QSOP package, check out how a common potato can drive these devices.
|UG-630: Evaluating the iCoupler ADuM1440ARQZ/ADuM1441ARQZ/ ADuM1442ARQZ/ADuM1445ARQZ/ADuM1446ARQZ/ADuM1447ARQZ with the EVAL-ADuM144xQSOP16-EBZ Evaluation System (pdf, 321 kB)||User Guides|
|MS-2644: Ultralow Power Opening Applications to High Speed Isolation (pdf, 1747 kB)||Technical Articles|
|Analog Devices Introduces the Industry’s Lowest Power Digital Isolators (13 Nov 2013)||Press Releases||HTML|
|Glossary of EE Terms||Glossary||HTML|
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.