Overview
The ADuM3211BRZ-RL7 is a dual-channel digital isolator produced by Analog Devices Inc. This component utilizes Analog Devices' iCoupler® technology, which combines high-speed CMOS and monolithic transformer technology to provide superior performance compared to traditional optocouplers. The ADuM3211BRZ-RL7 offers two independent isolation channels, supporting data rates up to 25 Mbps. It operates with 3.3 V or 5 V supply voltages on either side, enabling compatibility with lower voltage systems and voltage translation across the isolation barrier. This isolator is known for its stable performance characteristics, low power consumption, and enhanced system-level ESD reliability.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|---|
| Supply Voltage | VDDx | 3.0 | - | 5.5 | 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 | IOx = -20 µA, VIx = VIxH |
| Logic Low Output Voltages | VOL | 0.0 | - | 0.1 | V | IOx = 20 µA, VIx = VIxL |
| Propagation Delay | tPHL, tPLH | 15 | 55 | - | ns | 50% input to 50% output |
| Pulse Width Distortion | PWD | 5 | - | 3 | ns | - |
| Supply Current per Channel | IDD1, IDD2 | 0.7 | 1.3 | 2.1 | mA | - |
| Operating Temperature | - | -55 | - | 125 | °C | - |
Key Features
- High-Speed Data Transfer: Supports data rates up to 25 Mbps.
- Dual-Channel Isolation: Provides two independent isolation channels.
- Low Power Consumption: Consumes one-tenth to one-sixth the power of optocouplers at comparable signal data rates.
- Enhanced ESD Reliability: Designed for enhanced system-level ESD reliability, including ESD, burst, and surge protection.
- Voltage Translation: Operates with 3.3 V or 5 V supply voltages on either side, enabling voltage translation across the isolation barrier.
- Default Output Low Characteristic: The ADuM3211 has a default output low characteristic, distinguishing it from other models like the ADuM3200/ADuM3201.
- Automotive Grade Versions: Models like ADuM3211W are qualified for 125°C operation, making them suitable for automotive applications.
Applications
- Industrial Control Systems: Used in industrial control systems where high-speed data transfer and isolation are critical.
- Medical Devices: Suitable for medical devices requiring high isolation and low power consumption.
- Automotive Systems: Qualified for automotive applications due to its high temperature operation and ESD reliability.
- Power Supplies and DC-DC Converters: Used in power supplies and DC-DC converters to ensure isolation and safety.
- Communication Systems: Applied in communication systems where data integrity and isolation are essential.
Q & A
- What is the maximum data rate supported by the ADuM3211BRZ-RL7?
The ADuM3211BRZ-RL7 supports data rates up to 25 Mbps.
- What are the supply voltage options for the ADuM3211BRZ-RL7?
The component operates with 3.3 V or 5 V supply voltages on either side.
- How does the ADuM3211BRZ-RL7 differ from optocouplers?
The ADuM3211BRZ-RL7 uses iCoupler technology, avoiding LEDs and photodiodes, which eliminates issues like uncertain current transfer ratios, nonlinear transfer functions, and temperature and lifetime effects associated with optocouplers.
- What is the default output characteristic of the ADuM3211BRZ-RL7?
The ADuM3211BRZ-RL7 has a default output low characteristic.
- Is the ADuM3211BRZ-RL7 suitable for automotive applications?
Yes, the automotive grade versions of the ADuM3211, such as the ADuM3211W, are qualified for 125°C operation, making them suitable for automotive applications.
- What is the typical supply current for the ADuM3211BRZ-RL7?
The typical supply current for the ADuM3211BRZ-RL7 is around 1.3 mA per channel.
- How does the ADuM3211BRZ-RL7 enhance ESD reliability?
The ADuM3211BRZ-RL7 is designed for enhanced system-level ESD reliability, including protection against ESD, burst, and surge.
- What is the operating temperature range of the ADuM3211BRZ-RL7?
The operating temperature range is from -55°C to 125°C.
- Can the ADuM3211BRZ-RL7 be used for voltage translation?
Yes, the component can operate with different supply voltages on either side, enabling voltage translation across the isolation barrier.
- What are some common applications of the ADuM3211BRZ-RL7?
Common applications include industrial control systems, medical devices, automotive systems, power supplies, and communication systems.
