Features and Benefits
- Bidirectional communication
- 3 V/5 V level translation
- Schmitt trigger inputs
- High temperature operation: 105°C
- Up to 10 Mbps data rate (NRZ)
Low power operation
- 5 V operation
1.7 mA per channel maximum @
0 Mbps to 2 Mbps
4.0 mA per channel maximum @
2 Mbps to 10 Mbps
- 3 V operation
1.0 mA per channel maximum @ 0 Mbps to 2 Mbps
2.1 mA per channel maximum @ 2 Mbps to 10 Mbps
- Programmable default output state
- High common-mode transient immunity: >25 kV/µs
- 16-lead, RoHS-compliant, SOIC wide body package
- 8.1 mm external creepage
Safety and regulatory approvals
- UL recognition: 2500 V rms for 1 minute per UL 1577
- CSA Component Acceptance Notice #5A
- VDE certificate of conformity
DIN V VDE V 0884-10
(VDE V 0884-10): 2006-12
VIORM = 560 V peak working voltage
The ADuM131x are 3-channel digital isolators 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 optocouplers. The typical optocoupler concerns regarding uncertain current transfer ratios, maximum operating 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 iCoupler also offers higher channel densities and more options for channel directionality.
The ADuM131x isolators provide three independent isolation channels in a variety of channel configurations and data rates up to 10 Mbps (see the Ordering Guide). 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 voltage translation functionality across the isolation barrier. All products allow the user to predetermine the default output state in the absence of input VDD1 power with a simple control pin. Unlike other optocoupler alternatives, the ADuM131x isolators have a patented refresh feature that ensures dc correctness in the absence of input logic transitions and during power-up/power-down conditions.
- General-purpose multichannel isolation
- SPI interface/data converter isolation
- RS-232/RS-422/RS-485 transceiver
- Industrial field bus isolation
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
EVAL-ADuMQSEBZ can be used with most iCoupler® and isoPower(R) isolation products in the 16-lead, wide-body SOIC and QSOP packages. The evaluation board supports the common pad positions for power, ground, and I/O pins.
Supported iCoupler® Products
Features & Benefits
- Convenient connections for power through screw terminal blocks
- Add-on BNC connector for 50 Ω signal sources
- On-board signal routing
- Support for signal wrap back
- Simple signal paths to reduce transmission line effects
- Pull-up and pull-down provided for control lines
- Support for isoPower
- Project area that supports surface-mount and through-hole devices
Documentation & Resources
AN-0971: Recommendations for Control of Radiated Emissions with isoPower Devices (Rev. C)2/14/2015
AN-913: Isolating I2C Interfaces (Rev. 0)6/20/2007
AN-727: iCoupler® Isolation in RS-485 Applications (Rev. 0)11/1/2006
AN-740: iCoupler® Isolation in RS-232 Applications (Rev. A)11/1/2006
AN-770: iCoupler® Isolation in CAN Bus Applications (Rev. 0)11/1/2006
AN-793: ESD/Latch-Up Considerations with iCoupler® Isolation Products (Rev. A)11/1/2006
AN-825: Power Supply Considerations in iCoupler® Isolation Products (Rev. 0)11/1/2006
Digital Isolation for AC Voltage Motor Drives9/1/2013
Digital Isolators Offer Performance Advantages in Industrial Motor Drive Applications4/1/2012
Inside iCoupler® Technology:ADuM347x PWM Controller and Transformer Driver with Quad-Channel Isolators Design Summary12/10/2010
NAppkin Note: Lowering the Power of the ADuM524x12/10/2010
Medical Devices Demand Stringent Isolation Techniques9/28/2006
High Speed Digital Isolators Using Microscale On-Chip Transformers9/1/2003
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.
Sample & Buy
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.