Overview
The ADM2867EBRNZ from Analog Devices Inc. is a 5.7 kV rms signal and power isolated RS-485 transceiver designed for high-speed and reliable communication in harsh environments. This device integrates an isolated dc-to-dc converter, eliminating the need for an external isolated power supply. It is compliant with various industrial standards, including EN55032 Class B for radiated emissions, and offers high common-mode transient immunity and ESD protection. The ADM2867EBRNZ operates over a wide temperature range from -40°C to +105°C, making it suitable for a variety of industrial and commercial applications.
Key Specifications
| Parameter | Value |
|---|---|
| Isolation Voltage | 5.7 kV rms |
| Data Rate | 25 Mbps (ADM2867E) |
| Operating Temperature | -40°C to +105°C |
| Common-Mode Transient Immunity | 250 kV/μs |
| ESD Protection | ≥±12 kV IEC61000-4-2 contact discharge, ≥±15 kV IEC61000-4-2 air discharge |
| Power Supply | VCC = 3.0 V to 5.5 V, VISO = 3.0 V to 3.465 V |
| Output Current (VISOOUT) | Up to 90 mA |
| Package Type | 28-SOIC-W-FP |
Key Features
- Integrated, low EMI isolated dc-to-dc converter
- Passes EN55032 Class B radiated emissions testing with margin on a 2-layer PCB
- Cable invert smart feature to correct reversed cable connections
- Full receiver fail-safe feature
- High-speed data rate of 25 Mbps (ADM2867E) and low-speed option of 500 kbps (ADM2861E/ADM2863E)
- High common-mode transient immunity of 250 kV/μs
- Short-circuit protection and robust ESD protection on RS-485 A, B, Y, and Z pins
Applications
- Heating, ventilation, and air conditioning (HVAC) networks
- Industrial field buses
- Building automation
- Utility networks and energy meters
Q & A
- What is the isolation voltage of the ADM2867EBRNZ?
The isolation voltage is 5.7 kV rms. - What is the maximum data rate of the ADM2867EBRNZ?
The maximum data rate is 25 Mbps. - What is the operating temperature range of the ADM2867EBRNZ?
The operating temperature range is from -40°C to +105°C. - Does the ADM2867EBRNZ have ESD protection?
Yes, it has ESD protection of ≥±12 kV IEC61000-4-2 contact discharge and ≥±15 kV IEC61000-4-2 air discharge. - What is the purpose of the integrated dc-to-dc converter?
The integrated dc-to-dc converter eliminates the need for an external isolated power supply. - Is the ADM2867EBRNZ compliant with any specific emissions standards?
Yes, it passes EN55032 Class B radiated emissions testing with margin on a 2-layer PCB. - What is the cable invert smart feature?
The cable invert smart feature corrects reversed cable connections on A, B, Y, and Z bus pins while maintaining full receiver fail-safe functionality. - What are some common applications of the ADM2867EBRNZ?
Common applications include HVAC networks, industrial field buses, building automation, and utility networks. - What is the package type of the ADM2867EBRNZ?
The package type is 28-SOIC-W-FP. - What is the output current capability of the VISOOUT supply pin?
The output current capability is up to 90 mA.
