Overview
The ADM2867EBRNZ-RL7 is a 5.7 kV RMS full duplex RS-485/RS-422 transceiver manufactured by Analog Devices Inc. This device is designed to provide high signal and power isolation, making it suitable for applications requiring robust communication in noisy environments. It features an integrated, low electromagnetic interference (EMI) isolated dc-to-dc converter, which eliminates the need for an external isolated power supply. The transceiver operates with a single 3V to 5.5V power supply and supports data rates up to 25 Mbps, making it versatile for various industrial and commercial applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Isolation Voltage | - | - | 5.7 kV RMS | - | - |
| Data Rate | - | - | 25 Mbps | - | For ADM2865E/ADM2867E models |
| ESD Protection | - | - | ±15 kV IEC61000-4-2 air discharge | - | - |
| Operating Temperature | -40°C | - | 105°C | - | - |
| Input Voltage (VCC) | 3 V | - | 5.5 V | - | - |
| Logic Input/Output Voltage (VIO) | 1.7 V | - | 5.5 V | - | - |
| Isolated DC-to-DC Converter Output Voltage (VISO) | 3 V | - | 5.25 V | - | Depending on VSEL pin configuration |
| Isolated DC-to-DC Converter Output Current (IISOOUT) | 10 mA | - | 90 mA | - | Depending on VCC and VSEL configuration |
Key Features
- 5.7 kV RMS signal and power isolated RS-485/RS-422 transceiver
- Integrated, low EMI isolated dc-to-dc converter
- Passes EN 55032 Class B with margin on a 2-layer PCB
- Cable invert smart feature to correct reversed cable connections
- ESD protection on RS-485 A, B, Y, and Z pins (≥±12 kV IEC61000-4-2 contact discharge, ≥±15 kV IEC61000-4-2 air discharge)
- High speed data rate of up to 25 Mbps (ADM2865E/ADM2867E) and low speed of 500 kbps for EMI control (ADM2861E/ADM2863E)
- Flexible power supplies with input VCC supply of 3 V to 5.5 V and logic VIO supply of 1.7 V to 5.5 V
- VSEL pin to select VISO supply of 5 V or 3.3 V
- Wide operating temperature range: -40°C to +105°C
- High common-mode transient immunity: 250 kV/µs
- Short-circuit, open-circuit, and floating input receiver fail-safe
- Supports up to 192 bus nodes (72 kΩ receiver input impedance)
Applications
- Industrial Automation: Suitable for communication bus systems in industrial automation where isolated communication and high noise immunity are critical. It can be used for connecting and controlling various sensors and actuators across a factory floor.
- Healthcare: Due to its high isolation voltage and ESD protection, it is a potential choice for medical devices that require robust data transmission capabilities, such as patient monitoring systems.
- Computing and Data Storage: Can be used in data centers to manage data flow between servers and storage units, enhancing data integrity and speed.
- Heating, Ventilation, and Air Conditioning (HVAC) Networks: Suitable for HVAC systems that require reliable and isolated communication.
- Industrial Field Buses: Ideal for use in industrial field buses where high noise immunity and isolation are necessary.
- Building Automation: Can be used in building automation systems to ensure reliable and isolated communication.
- Utility Networks and Energy Meters: Suitable for utility networks and energy meters that require robust and isolated communication.
Q & A
- What is the isolation voltage of the ADM2867EBRNZ-RL7?
The isolation voltage of the ADM2867EBRNZ-RL7 is 5.7 kV RMS.
- What are the supported data rates for the ADM2867EBRNZ-RL7?
The ADM2867EBRNZ-RL7 supports data rates up to 25 Mbps for the ADM2865E/ADM2867E models and 500 kbps for the ADM2861E/ADM2863E models.
- What is the operating temperature range of the ADM2867EBRNZ-RL7?
The operating temperature range is from -40°C to +105°C.
- What kind of ESD protection does the ADM2867EBRNZ-RL7 offer?
The ADM2867EBRNZ-RL7 offers 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 in the ADM2867EBRNZ-RL7?
The integrated dc-to-dc converter eliminates the need for an external isolated power supply and reduces electromagnetic interference (EMI).
- How does the cable invert smart feature work?
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 is the maximum number of bus nodes supported by the ADM2867EBRNZ-RL7?
The ADM2867EBRNZ-RL7 supports up to 192 bus nodes with 72 kΩ receiver input impedance.
- Is the ADM2867EBRNZ-RL7 RoHS compliant?
Yes, the ADM2867EBRNZ-RL7 is RoHS compliant.
- What package type is the ADM2867EBRNZ-RL7 available in?
The ADM2867EBRNZ-RL7 is available in a 28-lead SOIC package.
- Where can I purchase the ADM2867EBRNZ-RL7?
The ADM2867EBRNZ-RL7 can be purchased from distributors such as Mouser Electronics, DigiKey, and Newark. It is also recommended to check findchips.com for real-time pricing and availability.
