Overview
The ADUM1285ARZ is a dual-channel digital isolator produced by Analog Devices Inc., utilizing the iCoupler® technology. This component combines high-speed CMOS and monolithic air core transformer technology to provide superior performance characteristics compared to optocouplers and other integrated couplers. It is designed for high-speed data transfer with low propagation delay and dynamic power consumption, making it suitable for a variety of industrial and communication applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|
| Supply Voltage | 2.7 | 5.5 | V | ||
| Data Rate | Up to 100 | Mbps | |||
| Propagation Delay | 23 | ns | |||
| Output Rise/Fall Time | 2.5 | ns | 10% to 90% | ||
| Common-Mode Transient Immunity | 25 | 35 | kV/μs | VIx = VDDx, VCM = 1000 V, transient magnitude = 800 V | |
| Quiescent Input Supply Current | 0.4 | 0.75 | mA | ||
| Quiescent Output Supply Current | 1.6 | 2.0 | mA | ||
| Dynamic Input Supply Current | 0.08 | mA/Mbps | |||
| Dynamic Output Supply Current | 0.03 | mA/Mbps |
Key Features
- Up to 100 Mbps data rate (NRZ)
- Low propagation delay: 23 ns typical
- Low dynamic power consumption
- Bidirectional communication
- 3.3 V to 5 V level translation
- High temperature operation: up to 125°C
- High common-mode transient immunity: >25 kV/μs
Applications
- Industrial I/O and control systems
- Automotive interfaces (CAN, Audio, Ethernet)
- RS-232 / RS-422 / RS-485 communication
- IO-Link and other industrial communication protocols
- Signal integrity and signal line protection
Q & A
- What is the ADUM1285ARZ used for?
The ADUM1285ARZ is used as a dual-channel digital isolator for high-speed data transfer in various industrial and communication applications. - What is the maximum data rate of the ADUM1285ARZ?
The maximum data rate is up to 100 Mbps. - What is the typical propagation delay of the ADUM1285ARZ?
The typical propagation delay is 23 ns. - What is the common-mode transient immunity of the ADUM1285ARZ?
The common-mode transient immunity is greater than 25 kV/μs. - What are the supply voltage ranges for the ADUM1285ARZ?
The supply voltage ranges from 2.7 V to 5.5 V. - Does the ADUM1285ARZ support bidirectional communication?
Yes, it supports bidirectional communication. - What is the operating temperature range of the ADUM1285ARZ?
The operating temperature range is up to 125°C. - What kind of technology does the ADUM1285ARZ use?
The ADUM1285ARZ uses iCoupler® technology, combining high-speed CMOS and monolithic air core transformer technology. - What are some common applications of the ADUM1285ARZ?
Common applications include industrial I/O, automotive interfaces, RS-232 / RS-422 / RS-485 communication, and IO-Link. - How does the ADUM1285ARZ handle dynamic power consumption?
The ADUM1285ARZ has low dynamic power consumption, with dynamic input and output supply currents specified in the datasheet.
