ADUM2281
PRODUCTION5 kV RMS Dual Channel Digital Isolators
- Part Models
- 6
- 1ku List Price
- Starting From $2.14
Overview
- High isolation voltage: 5000 VRMS
- Up to 100 Mbps data rate
- Low propagation delay: 24 ns maximum
- Low dynamic power consumption
- Bidirectional communication
- 3 V to 5 V level translation
- High temperature operation: 125°C
- High common-mode transient immunity: >25 kV/μs
- Default high output: ADuM2280/ADuM2281
- Default low output: ADuM2285/ADuM2286
- 16-lead SOIC wide body enhanced creepage package
- Safety and regulatory approvals
- UL 1577
- VISO = 5000 VRMS for 1 minute
- IEC / CSA 62368-1
- IEC / CSA 60601-1
- IEC / CSA 61010-1
- CQC GB 4943.1
- DIN EN IEC 60747-17 (VDE 0884-17)
- VIORM = 645 VPEAK
- UL 1577
- Pin-compatible with ADuM220x and ADuM221x families
TheADuM2280 / ADuM2281 / ADuM2285 / ADuM2286 (also referred to as ADuM228x in this data sheet) are 5 kV rms dual-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 and other integrated couplers.
With propagation delay at 24 ns maximum, pulse width distortion is less than 2 ns for C grade. Channel-to-channel matching is tight at 5 ns for C grade. The ADuM228x are available in two channel configurations with three different data rates up to 100 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 a voltage translation functionality across the isolation barrier. Unlike other optocoupler alternatives, the ADuM228x isolators have a patented refresh feature that ensures dc correctness in the absence of input logic transitions. When power is first applied or is not yet applied to the input side, the ADuM2280 and ADuM2281 have a default high output and the ADuM2285 and ADuM2286 have a default low output.
APPLICATIONS
- General-purpose, high voltage, multichannel isolation
- Medical equipment
- Power supplies
- RS-232/RS-422/RS-485 transceiver isolation
Documentation
Data Sheet 1
Informational 1
Safety and Regulatory Compliance 1
Video 1
Solutions Bulletin & Brochure 1
Safety and Regulatory Compliance 1
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. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| ADUM2281ARIZ | 16-Lead SOIC (Increased Creepage) | ||
| ADUM2281ARIZ-RL | 16-Lead SOIC (Increased Creepage) | ||
| ADUM2281BRIZ | 16-Lead SOIC (Increased Creepage) | ||
| ADUM2281BRIZ-RL | 16-Lead SOIC (Increased Creepage) | ||
| ADUM2281CRIZ | 16-Lead SOIC (Increased Creepage) | ||
| ADUM2281CRIZ-RL | 16-Lead SOIC (Increased Creepage) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
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Oct 29, 2025 - 25_0067 Update Data Sheet Regulatory Information for Select Data Isolator Products |
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Jun 13, 2023 - 23_0137 ADuM2280/ADuM2281/ADuM2285/ADuM2286 Data Sheet Revision |
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Sep 22, 2015 - 15_0135 Alternate Assembly Site of Select Isolator Products in 8L/16L SOIC_N, 16L/20L SOIC_W and 16L/20L SOIC_IC at ASE Chungli |
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Nov 6, 2013 - 13_0283 Change of Moisture Sensitivity Level Rating for iCoupler Products Assembled in an RI-16 Package from MSL 1 to MSL 3 |
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This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| ADUM321N | RECOMMENDED FOR NEW DESIGNS | 5.7 kV RMS/3.0 kV RMS Dual Digital Isolators |