Overview
The ADM2483BRW is a half-duplex, iCoupler isolated RS-485 transceiver designed by Analog Devices Inc. This integrated component is tailored for bidirectional data communication on balanced, multipoint bus transmission lines. It complies with ANSI TIA/EIA RS-485-A and ISO 8482:1987(E) standards, ensuring reliable and standardized communication.
The device utilizes Analog Devices' iCoupler technology, which combines a 3-channel isolator, a three-state differential line driver, and a differential input receiver into a single package. This isolation technology provides electrical isolation between the logic and bus sides, enhancing safety and reliability in industrial and other harsh environments.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VDD1) | 2.7 | 5.0 | 5.5 | V |
| Supply Voltage (VDD2) | 4.75 | 5.0 | 5.25 | V |
| Data Rate | 500 | kbps | ||
| Input Impedance | 96 kΩ | |||
| Operating Temperature Range | -40 | 85 | °C | |
| Package Type | 16-Lead Wide Body SOIC | |||
| ESD Rating (Human Body Model) | ±2 kV |
Key Features
- Electrical Isolation: The ADM2483BRW uses iCoupler technology to provide electrical isolation between the logic and bus sides, ensuring safety and reliability.
- Compliance with Standards: Complies with ANSI TIA/EIA RS-485-A and ISO 8482:1987(E) standards.
- Slew Rate-Limited Driver Outputs: Reduces reflections with improperly terminated transmission lines, limiting the data rate to 500 kbps.
- Low Power Operation: Maximum current consumption of 2.5 mA.
- Active-High Enable and Disable Features: For both the driver and receiver, allowing for controlled operation.
- True Fail-Safe Receiver Inputs: Ensures a logic-high receiver output when inputs are open or shorted.
- Current Limiting and Thermal Shutdown: Protects against output short circuits and bus contention situations.
- Magnetic Field Immunity: Resistant to external magnetic fields.
Applications
- Industrial Automation: Suitable for use in industrial control systems, sensors, and actuators.
- Building Automation: Used in building management systems for controlling lighting, HVAC, and security systems.
- Medical Devices: Can be used in medical equipment where electrical isolation is crucial for safety.
- Aerospace and Defense: Applicable in various military and aerospace communication systems.
- Transportation Systems: Used in vehicle networks and other transportation-related communication systems.
Q & A
- What is the primary function of the ADM2483BRW?
The ADM2483BRW is a half-duplex, iCoupler isolated RS-485 transceiver designed for bidirectional data communication on balanced, multipoint bus transmission lines.
- What standards does the ADM2483BRW comply with?
The ADM2483BRW complies with ANSI TIA/EIA RS-485-A and ISO 8482:1987(E) standards.
- What is the maximum data rate of the ADM2483BRW?
The maximum data rate is 500 kbps due to the slew rate-limited driver outputs.
- What type of package is the ADM2483BRW available in?
The ADM2483BRW is available in a 16-Lead Wide Body SOIC package.
- What is the operating temperature range of the ADM2483BRW?
The operating temperature range is -40°C to +85°C.
- Does the ADM2483BRW have any protection features against short circuits?
- What is the significance of the iCoupler technology in the ADM2483BRW?
The iCoupler technology provides electrical isolation between the logic and bus sides, enhancing safety and reliability.
- How does the true fail-safe feature work in the ADM2483BRW?
The true fail-safe feature ensures a logic-high receiver output when the inputs are open or shorted, guaranteeing a known state before and after communication.
- Is the ADM2483BRW immune to external magnetic fields?
- What are some common applications of the ADM2483BRW?
