ADUM3442 Quad Channel, High Speed Digital Isolators _ BDTIC a Leading Distributor in China

ADUM3442 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.

Applications

High speed multichannel isolation
SPI interface/data converter isolation
Instrumentation

Features and Benefits

Low power operation
Bidirectional communication
3.3 V/5 V level translation
High temperature operation: 105°C
High data rate: dc to 150 Mbps (NRZ)

Precise timing characteristics
High common-mode transient immunity: >25 kV/μs
See Data Sheet for Additional Information

Data Sheets

Document	note
ADuM3440/ADuM3441/ADuM3442: Quad Channel, High Speed Digital Isolators Data Sheet (Rev. D)	PDF 542 kB

Application Notes

Document	note
AN-0971: Recommendations for Control of Radiated Emissions with isoPower Devices (Rev. C)	PDF 406 kB
AN-913: Isolating I2C Interfaces (Rev. 0)	PDF 280 kB
AN-727: iCoupler® Isolation in RS-485 Applications (Rev. 0)	PDF 282 kB
AN-740: iCoupler® Isolation in RS-232 Applications (Rev. 0)	PDF 716 kB
AN-770: iCoupler® Isolation in CAN Bus Applications (Rev. 0)	PDF 234 kB
AN-793: ESD/Latch-Up Considerations with iCoupler® Isolation Products (Rev. A)	PDF 246 kB
AN-825: Power Supply Considerations in iCoupler® Isolation Products (Rev. 0)	PDF 181 kB

User Guides

Document	note
UG-400: ezLINX iCoupler Isolated Interface Development Environment Hardware User Guide	PDF 393 kB
UG-042: Evaluating 16-Lead SOIC and 16-Lead QSOP Digital Isolators	PDF 504 kB