Overview
The ADUM2281ARIZ-RL, produced by Analog Devices Inc., is a 5 kV rms dual-channel digital isolator. This component utilizes Analog Devices' iCoupler technology, combining high-speed CMOS and monolithic air core transformer technology to provide superior performance characteristics compared to optocoupler devices and other integrated couplers. It is designed for high isolation voltage applications, offering up to 100 Mbps data rate and low propagation delay of 24 ns maximum. The device operates with supply voltages ranging from 3.0 V to 5.5 V, enabling voltage translation across the isolation barrier and compatibility with lower voltage systems.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Isolation Voltage | - | - | 5000 | V rms | - | |
| Data Rate | - | - | 100 | Mbps | - | |
| Propagation Delay | - | - | 24 | ns | - | |
| Quiescent Input Supply Current | IDDI(Q) | 0.54 | 0.8 | - | mA | - |
| Quiescent Output Supply Current | IDDO(Q) | 1.6 | 2.0 | - | mA | - |
| Dynamic Input Supply Current | IDDI(D) | - | 0.09 | - | mA/Mbps | - |
| Dynamic Output Supply Current | IDDO(D) | - | 0.04 | - | mA/Mbps | - |
| Undervoltage Lockout Positive VDDx Threshold | VDDxUV+ | 2.6 | - | - | V | - |
| Undervoltage Lockout Negative VDDx Threshold | VDDxUV- | 2.4 | - | - | V | - |
| VDDx Hysteresis | VDDxUVH | 0.2 | - | - | V | - |
| Logic High Input Threshold | VIH | 0.7 VDDx | - | - | V | - |
| Logic Low Input Threshold | VIL | 0.3 VDDx | - | - | V | - |
| Logic High Output Voltages | VOH | VDDx - 0.1 | - | - | V | - |
| Package | - | - | - | - | SOIC-16-300mil |
Key Features
- High isolation voltage: 5000 V rms
- 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: up to 125°C
- High common-mode transient immunity: >25 kV/μs
- Default high output for ADuM2280/ADuM2281 and default low output for ADuM2285/ADuM2286
- 16-lead SOIC wide body enhanced creepage package
- Safety and regulatory approvals including UL recognition, CSA certification, VDE Certificate of Conformity, and more
Applications
- General-purpose, high voltage, multichannel isolation
- Medical equipment
- Power supplies
- RS-232/RS-422/RS-485 transceiver isolation
- Industrial controls
- Automotive systems
- Servers and information communications
- Power meters
Q & A
- What is the isolation voltage of the ADUM2281ARIZ-RL?
The isolation voltage is 5000 V rms. - What are the possible data rates for this isolator?
The data rates can be up to 100 Mbps, with specific models supporting 1 Mbps, 25 Mbps, and 100 Mbps. - What is the propagation delay of the ADUM2281ARIZ-RL?
The propagation delay is 24 ns maximum. - What is the operating temperature range of this component?
The component can operate up to 125°C. - Does the ADUM2281ARIZ-RL support bidirectional communication?
Yes, it supports bidirectional communication. - What are the supply voltage ranges for this isolator?
The supply voltage ranges from 3.0 V to 5.5 V on either side. - What is the package type of the ADUM2281ARIZ-RL?
The package type is SOIC-16-300mil. - Does the ADUM2281ARIZ-RL have any safety and regulatory approvals?
Yes, it has UL recognition, CSA certification, VDE Certificate of Conformity, and other regulatory approvals. - What are some common applications of the ADUM2281ARIZ-RL?
Common applications include medical equipment, power supplies, RS-232/RS-422/RS-485 transceiver isolation, and industrial controls. - How does the ADUM2281ARIZ-RL handle common-mode transient immunity?
The component has high common-mode transient immunity of >25 kV/μs.
