Overview
The ADUM3211ARZ is a dual-channel digital isolator produced by Analog Devices Inc., utilizing the company's proprietary iCoupler® technology. This component combines high-speed CMOS and monolithic transformer technology to provide superior performance compared to traditional optocoupler devices. It eliminates the need for LEDs and photodiodes, thereby avoiding issues such as uncertain current transfer ratios, nonlinear transfer functions, and temperature and lifetime effects. The ADUM3211ARZ is designed to operate with 3.3 V or 5 V supply voltages on either side, enabling voltage translation across the isolation barrier and compatibility with lower voltage systems.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Comments |
|---|---|---|---|---|---|---|
| Data Rate | 1 | 10 | 25 | Mbps | Within PWD limit | |
| Propagation Delay (tPHL, tPLH) | 15 | 55 | 55 | ns | 50% input to 50% output | |
| Pulse Width Distortion (PWD) | 5 | 3 | ns | |tPLH − tPHL| | ||
| Pulse Width (PW) | 1000 | 33 | ns | Within PWD limit | ||
| Propagation Delay Skew (tPSK) | 29 | 20 | ns | Between any two units | ||
| Channel Matching Codirectional (tPSKCD) | 15 | 3 | ns | |||
| Channel Matching Opposing Directional (tPSKOD) | 29 | 22 | ns | |||
| Output Rise/Fall Time (tR/tF) | 2.5 | 2.5 | ns | 10% to 90% | ||
| Supply Current (IDD1, IDD2) | 1.1, 0.8 | 1.5, 1.6 | 2.9, 2.5 | mA | For ADUM3211 at 3.3V and 5V respectively | |
| Common-Mode Transient Immunity | |CM| | 25 | 35 | kV/µs | VCM = 1000 V, transient magnitude = 800 V |
Key Features
- High-Speed Data Transfer: Supports data rates up to 25 Mbps.
- Dual-Channel Isolation: Provides two independent isolation channels.
- Voltage Compatibility: Operates with 3.3 V or 5 V supply voltages on either side, enabling voltage translation.
- Low Power Consumption: Consumes significantly less power compared to optocouplers.
- High Common-Mode Transient Immunity: Up to 35 kV/µs, ensuring robust performance against transient voltages.
- Automotive Grade Versions: Available models (ADUM3210W and ADUM3211W) are qualified for 125°C operation.
- Improved System-Level ESD, Burst, and Surge Capability: Enhanced circuit and layout changes for better performance in system-level IEC 61000-4-x testing.
Applications
- Industrial Automation: Used in control systems, sensors, and actuators where isolation is critical.
- Automotive Systems: Suitable for automotive interfaces such as CAN, audio, and Ethernet due to its high temperature rating and robust transient immunity.
- Medical Devices: Applied in medical equipment where electrical isolation is essential for safety.
- Power Supplies and DC-DC Converters: Used to isolate feedback signals and control circuits.
- Test and Measurement Equipment: Utilized in various test and measurement devices requiring high-speed data transfer and isolation.
Q & A
- What is the ADUM3211ARZ and what technology does it use?
The ADUM3211ARZ is a dual-channel digital isolator that uses Analog Devices' iCoupler® technology, combining high-speed CMOS and monolithic transformer technology. - What are the key advantages of the ADUM3211ARZ over optocouplers?
The ADUM3211ARZ avoids the use of LEDs and photodiodes, eliminating issues like uncertain current transfer ratios, nonlinear transfer functions, and temperature and lifetime effects. It also consumes less power and does not require external drivers. - What are the supported data rates for the ADUM3211ARZ?
The ADUM3211ARZ supports data rates up to 25 Mbps. - What supply voltages does the ADUM3211ARZ support?
The ADUM3211ARZ operates with 3.3 V or 5 V supply voltages on either side. - What is the propagation delay of the ADUM3211ARZ?
The propagation delay (tPHL, tPLH) is typically 15 to 55 ns. - Does the ADUM3211ARZ have automotive grade versions?
Yes, the ADUM3210W and ADUM3211W models are automotive grade versions qualified for 125°C operation. - What is the common-mode transient immunity of the ADUM3211ARZ?
The common-mode transient immunity is up to 35 kV/µs. - How does the ADUM3211ARZ improve system-level ESD, burst, and surge capability?
The ADUM3211ARZ contains enhanced circuit and layout changes that improve its performance in system-level IEC 61000-4-x testing. - What are some typical applications of the ADUM3211ARZ?
Typical applications include industrial automation, automotive systems, medical devices, power supplies, and test and measurement equipment. - What is the output rise/fall time of the ADUM3211ARZ?
The output rise/fall time (tR/tF) is typically 2.5 ns from 10% to 90%.
