Quad Channel, High Speed Digital Isolators
The ADuM344x are four channel, digital isolators based on the Analog Devices, Inc., iCoupler® technology supporting data rates up to 150 Mbps. 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 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 ADuM344x isolators provide four independent isolation channels in a variety of channel configurations (see the Ordering Guide). The ADuM344x operates with the supply voltage on either side ranging from 3.0 V to 5.5 V, providing compatibility with lower voltage systems as well as enabling voltage translation functionality across the isolation barrier. In addition, the ADuM344x provides low pulse width distortion and tight channel-to-channel matching. Unlike other opto-coupler alternatives, the ADuM344x isolators have a patented refresh feature that ensures dc correctness in the absence of input logic transitions and during the power-up/power-down condition.
- High speed multichannel isolation
- SPI interface/data converter isolation
Comparable Parts Click to see all in Parametric Search
This designates products ADI does not recommend broadly for new designs.
Supported iCoupler® Products
Product Selection Guide
Digital Isolator Product Selection and Resource Guide
Safety and Regulatory Compliance Information
The iCoupler® family of digital isolation products have been tested and approved by various regulatory agencies,...
Inside iCoupler® Technology:ADuM347x PWM Controller and Transformer Driver with
By Flow Zhao, Design Engineer
NAppkin Note: Lowering the Power of the ADuM524x
By Mark Cantrell, Senior Applications Engineer
Micro-Transformers Provide Signal and Power Isolation for Hybrid Electric...
By Baoxing Chen, Sr. Staff Engineer, Analog Devices, Inc.
High Speed Digital Isolators Using Microscale On-Chip Transformers
By Baoxing Chen, John Wynne, and Ronn Kliger
iCoupler® Products with isoPower™ Technology: Signal and Power Transfer...
By Baoxing Chen
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Didn't find what you were looking for?
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.