Overview
The ADUM2251ARWZ-RL, produced by Analog Devices Inc., is a digital isolator designed for bidirectional and unidirectional communication channels compatible with I2C interfaces. This component utilizes iCoupler® chip scale transformer technology, offering advantages in performance, size, power consumption, and functionality compared to traditional optocouplers. The ADUM2251ARWZ-RL is particularly suited for applications requiring hot swap capabilities and high isolation voltage.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Supply/Logic Levels | 3.0 V to 5.5 V | V | |
| Operation Frequency | 1000 kHz | kHz | |
| Current Sink Capability | 30 mA | mA | |
| Package Type | 16-lead SOIC wide body | ||
| Maximum Operating Temperature | 105°C | °C | |
| Isolation Voltage | 5000 V rms (UL 1577) | V rms | UL recognition for 1 minute |
| Input to Output Resistance | 1012 Ω | Ω | |
| Input to Output Capacitance | 2.2 pF | pF | f = 1 MHz |
| Input Capacitance | 4.0 pF | pF |
Key Features
- Bidirectional I2C communication
- Open-drain interfaces
- Suitable for hot swap applications
- 30 mA current sink capability
- 1000 kHz operation frequency
- 3.0 V to 5.5 V supply/logic levels
- High temperature operation up to 105°C
- UL, CSA, IEC, and VDE safety and regulatory approvals
- Qualified for automotive applications
Applications
- Isolated I2C, SMBus, or PMBus interfaces
- Multilevel I2C interfaces
- Power supplies
- Networking
- Power over Ethernet
Q & A
- What is the primary function of the ADUM2251ARWZ-RL?
The ADUM2251ARWZ-RL is a digital isolator that provides bidirectional and unidirectional communication channels compatible with I2C interfaces. - What technology does the ADUM2251ARWZ-RL use for isolation?
The ADUM2251ARWZ-RL uses iCoupler® chip scale transformer technology. - What are the supply/logic levels supported by the ADUM2251ARWZ-RL?
The component supports supply/logic levels from 3.0 V to 5.5 V. - What is the maximum operating frequency of the ADUM2251ARWZ-RL?
The maximum operating frequency is 1000 kHz. - Is the ADUM2251ARWZ-RL suitable for hot swap applications?
Yes, it is designed for hot swap applications. - What is the current sink capability of the ADUM2251ARWZ-RL?
The current sink capability is 30 mA. - What are the safety and regulatory approvals for the ADUM2251ARWZ-RL?
The component has UL, CSA, IEC, and VDE safety and regulatory approvals. - What is the maximum operating temperature of the ADUM2251ARWZ-RL?
The maximum operating temperature is 105°C. - Is the ADUM2251ARWZ-RL qualified for automotive applications?
Yes, it is qualified for automotive applications. - What are some common applications of the ADUM2251ARWZ-RL?
Common applications include isolated I2C, SMBus, or PMBus interfaces, multilevel I2C interfaces, power supplies, networking, and Power over Ethernet.
