Overview
The ADM2795EBRWZ is a robust, isolated RS-485/RS-422 transceiver produced by Analog Devices Inc. This device is designed to provide high reliability and robustness in industrial and harsh environments. It integrates Analog Devices' iCoupler® technology, combining a 3-channel isolator, RS-485 transceiver, and IEC electromagnetic compatibility (EMC) transient protection in a single package. The transceiver is fully compliant with TIA/EIA RS-485/RS-422 standards when operated over a 3 V to 5.5 V VDD2 power supply and offers glitch-free power-up/power-down (hot swap) capabilities.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Number of Drivers/Receivers | 1 Driver, 1 Receiver | - | - |
| Data Rate | 2.5 Mbps | - | - |
| Operating Voltage Range (VDD1) | 1.7 V to 5.5 V | V | - |
| Operating Voltage Range (VDD2) | 3 V to 5.5 V | V | - |
| Temperature Range | -40°C to +125°C | °C | - |
| Common-Mode Input Range | -25 V to +25 V | V | - |
| Bus Nodes Supported | 256 | - | 96 kΩ receiver input impedance |
| EMC Protection | IEC 61000-4-5 Level 4 surge protection (±4 kV), IEC 61000-4-4 Level 4 EFT protection (±2 kV), IEC 61000-4-2 Level 4 ESD protection (±15 kV) | - | - |
| Package Type | 16-lead WSOIC | - | - |
Key Features
- Fully TIA/EIA RS-485/RS-422 compliant when operated over a 3 V to 5.5 V VDD2 power supply.
- Robust noise immunity tested to the IEC 62132-4 standard.
- Passes EN55022 Class B radiated emissions by a 6 dBµV/m margin.
- Receiver short-circuit, open-circuit, and floating input fail-safe.
- Supports 256 bus nodes with 96 kΩ receiver input impedance.
- Glitch-free power-up/power-down (hot swap) capabilities.
- High common-mode transient immunity: >75 kV/μs.
- Up to ±42 V of ac/dc peak bus overvoltage fault protection on the RS-485 bus pins.
Applications
- Heating, ventilation, and air conditioning (HVAC) networks.
- Industrial field buses.
- Building automation.
- Utility networks.
Q & A
- What is the data rate of the ADM2795EBRWZ transceiver?
The data rate of the ADM2795EBRWZ transceiver is up to 2.5 Mbps.
- What is the operating voltage range for the ADM2795EBRWZ?
The operating voltage range for VDD1 is 1.7 V to 5.5 V, and for VDD2 it is 3 V to 5.5 V.
- What is the temperature range of the ADM2795EBRWZ?
The temperature range of the ADM2795EBRWZ is -40°C to +125°C.
- How many bus nodes can the ADM2795EBRWZ support?
The ADM2795EBRWZ can support up to 256 bus nodes with 96 kΩ receiver input impedance.
- What kind of EMC protection does the ADM2795EBRWZ offer?
The ADM2795EBRWZ offers IEC 61000-4-5 Level 4 surge protection (±4 kV), IEC 61000-4-4 Level 4 EFT protection (±2 kV), and IEC 61000-4-2 Level 4 ESD protection (±15 kV).
- Is the ADM2795EBRWZ compliant with RS-485/RS-422 standards?
Yes, the ADM2795EBRWZ is fully compliant with TIA/EIA RS-485/RS-422 standards when operated over a 3 V to 5.5 V VDD2 power supply.
- What is the common-mode input range of the ADM2795EBRWZ?
The common-mode input range of the ADM2795EBRWZ is -25 V to +25 V.
- Does the ADM2795EBRWZ have glitch-free power-up/power-down capabilities?
Yes, the ADM2795EBRWZ has glitch-free power-up/power-down (hot swap) capabilities.
- What are some typical applications of the ADM2795EBRWZ?
The ADM2795EBRWZ is typically used in HVAC networks, industrial field buses, building automation, and utility networks.
- What is the package type of the ADM2795EBRWZ?
The ADM2795EBRWZ comes in a 16-lead WSOIC package.
