Overview
The Analog Devices Inc. ADM2485BRWZ-REEL7 is a high-speed, isolated RS-485 transceiver designed for bidirectional data communication on multipoint bus transmission lines. This device employs Analog Devices' iCoupler® technology, combining a 3-channel isolator, a three-state differential line driver, and a differential input receiver into a single package. It is fully compliant with ANSI/TIA/EIA RS-485-A-98 and ISO 8482:1987(E) standards, making it suitable for balanced transmission lines. The ADM2485 is available in a 16-lead, wide-body SOIC package and operates over the industrial temperature range.
Key Specifications
| Attribute | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Part Number | ADM2485BRWZ-REEL7 |
| Package | SOIC-16-300mil |
| Protocol Supported | RS-485, RS-422 |
| Data Rate | Up to 16 Mbps |
| Galvanic Isolation | 2500 Vrms |
| Operating Supply Voltage | 2.7 V to 5.5 V (Logic Side), 4.75 V to 5.25 V (Bus Side) |
| Temperature Range | -40°C to +85°C |
| Current Limiting and Thermal Shutdown | Yes |
| Receiver Disable | Active High |
| Driver Enable | Active High |
Key Features
- High-speed data transmission up to 16 Mbps.
- Galvanic isolation of 2500 Vrms for enhanced safety and noise immunity.
- Compliance with ANSI/TIA/EIA RS-485-A-98 and ISO 8482:1987(E) standards.
- Dual supply voltage operation: 2.7 V to 5.5 V (logic side) and 4.75 V to 5.25 V (bus side).
- Current-limiting and thermal shutdown features for protection against output short circuits and excessive power dissipation.
- Active high receiver and driver enable/disable functions.
- Integrated transformer driver for isolated power supply.
Applications
- Industrial automation and control systems.
- Building automation and HVAC systems.
- Medical devices requiring high isolation and reliability.
- Aerospace and defense applications where robust communication is critical.
- Automotive systems, especially those requiring high-speed data transmission and isolation.
Q & A
- What is the primary function of the ADM2485BRWZ-REEL7?
The primary function of the ADM2485BRWZ-REEL7 is to provide high-speed, isolated RS-485 and RS-422 data communication on multipoint bus transmission lines.
- What are the operating supply voltage ranges for the ADM2485BRWZ-REEL7?
The device operates with supply voltages ranging from 2.7 V to 5.5 V on the logic side and 4.75 V to 5.25 V on the bus side.
- What is the maximum data rate supported by the ADM2485BRWZ-REEL7?
The ADM2485BRWZ-REEL7 supports data rates up to 16 Mbps.
- Does the ADM2485BRWZ-REEL7 have built-in protection features?
Yes, it includes current-limiting and thermal shutdown features to protect against output short circuits and excessive power dissipation.
- What is the galvanic isolation rating of the ADM2485BRWZ-REEL7?
The device provides galvanic isolation of 2500 Vrms.
- What package type is the ADM2485BRWZ-REEL7 available in?
The ADM2485BRWZ-REEL7 is available in a 16-lead, wide-body SOIC package.
- Is the ADM2485BRWZ-REEL7 compliant with any industry standards?
Yes, it complies with ANSI/TIA/EIA RS-485-A-98 and ISO 8482:1987(E) standards.
- What is the temperature range for the ADM2485BRWZ-REEL7?
The device operates over the industrial temperature range of -40°C to +85°C.
- Does the ADM2485BRWZ-REEL7 have an integrated transformer driver?
Yes, it includes an integrated transformer driver for isolated power supply.
- How does the receiver and driver enable/disable function work on the ADM2485BRWZ-REEL7?
The receiver and driver enable/disable functions are controlled by active high signals.
