Overview
The ADuM3211TRZ-RL7 is a dual-channel digital isolator produced by Analog Devices Inc., utilizing the company's iCoupler® technology. This component combines high-speed CMOS and monolithic transformer technology to provide superior performance characteristics compared to traditional optocoupler devices. The ADuM3211 eliminates the design difficulties associated with optocouplers, such as uncertain current transfer ratios, nonlinear transfer functions, and temperature and lifetime effects. It offers stable performance, low power consumption, and the elimination of the need for external drivers and discrete components.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|---|
| Supply Current (IDD1) | IDD1 | 1.1 | 1.5 | 2.9 | mA | VDD1 = VDD2 = 3.3 V, TA = 25°C |
| Supply Current (IDD2) | IDD2 | 0.8 | 1.6 | 1.9 | mA | VDD1 = VDD2 = 3.3 V, TA = 25°C |
| Propagation Delay (tPHL, tPLH) | tPHL, tPLH | 15 | 55 | 55 | ns | 50% input to 50% output |
| Pulse Width Distortion (PWD) | PWD | 5 | 3 | - | ns | Within PWD limit |
| Output Rise/Fall Time (tR/tF) | tR/tF | 2.5 | 2.5 | - | ns | 10% to 90% |
| Common-Mode Transient Immunity | |CM| | 25 | 35 | - | kV/µs | VCM = 1000 V, transient magnitude = 800 V |
| Ambient Operating Temperature (TA) | TA | -55 | - | 125 | °C | - |
| Supply Voltages (VDD1, VDD2) | VDD1, VDD2 | -0.5 | - | 7.0 | V | - |
Key Features
- High-Speed Data Transfer: Supports data rates up to 10 Mbps, ensuring high-speed communication between isolated channels.
- Low Power Consumption: Consumes significantly less power compared to optocouplers, with dynamic input and output supply currents as low as 0.19 mA/Mbps and 0.05 mA/Mbps, respectively.
- High Common-Mode Transient Immunity: Offers immunity to common-mode transients up to 35 kV/µs, ensuring robust performance in noisy environments.
- Stable Performance: Eliminates the uncertainties associated with optocouplers, such as nonlinear transfer functions and temperature effects, providing stable and reliable operation.
- Compact Package: Available in an 8-lead SOIC package, making it suitable for space-constrained applications.
Applications
- Industrial Control Systems: Ideal for isolating control signals in industrial automation and control systems to ensure safety and reliability.
- Medical Devices: Used in medical devices where high isolation and low power consumption are critical, such as in patient monitoring systems and diagnostic equipment.
- Automotive Systems: Suitable for automotive applications requiring high-speed data transfer and robust isolation, such as in vehicle control units and safety systems.
- Power Supplies and DC-DC Converters: Used to isolate feedback signals in power supplies and DC-DC converters, enhancing overall system reliability and efficiency.
Q & A
- What is the ADuM3211TRZ-RL7 used for?
The ADuM3211TRZ-RL7 is a dual-channel digital isolator used to isolate digital signals in various applications, ensuring high-speed data transfer and robust isolation.
- What is the maximum data rate supported by the ADuM3211TRZ-RL7?
The ADuM3211TRZ-RL7 supports data rates up to 10 Mbps.
- What is the typical supply current for the ADuM3211TRZ-RL7?
The typical supply current for IDD1 is 1.5 mA and for IDD2 is 1.6 mA at VDD1 = VDD2 = 3.3 V and TA = 25°C.
- What is the common-mode transient immunity of the ADuM3211TRZ-RL7?
The ADuM3211TRZ-RL7 offers common-mode transient immunity up to 35 kV/µs.
- What is the operating temperature range for the ADuM3211TRZ-RL7?
The operating temperature range is from -55°C to +125°C.
- What package type is the ADuM3211TRZ-RL7 available in?
The ADuM3211TRZ-RL7 is available in an 8-lead SOIC package.
- How does the ADuM3211TRZ-RL7 compare to optocouplers in terms of power consumption?
The ADuM3211TRZ-RL7 consumes significantly less power than optocouplers, making it more energy-efficient.
- What are some common applications for the ADuM3211TRZ-RL7?
Common applications include industrial control systems, medical devices, automotive systems, and power supplies.
- Does the ADuM3211TRZ-RL7 require external drivers or discrete components?
No, the ADuM3211TRZ-RL7 does not require external drivers or discrete components, simplifying the design process.
- What is the typical output rise and fall time for the ADuM3211TRZ-RL7?
The typical output rise and fall time is 2.5 ns from 10% to 90%.
