ADM2795E

PRODUCTION

Robust 5 kV RMS Isolated RS-485/RS-422 Transceiver with Level 4 EMC and Full ±42 V Protection

Data Sheet (Rev. D) Product Selection Table
Viewing:

Overview

  • 5kV rms isolated RS-485/RS-422 transceiver
  • ±42V AC/DC peak fault protection on RS-485 bus pins
  • Certified Level 4 EMC protection on RS-485 A, B bus pins
    • IEC 61000-4-5 surge protection (±4kV)
    • IEC 61000-4-4 electrical fast transient (EFT) protection (±2kV)
    • IEC 61000-4-2 electrostatic discharge (ESD) protection
      • ±8kV contact discharge
      • ±15kV air discharge
    • IEC 61000-4-6 conducted radio frequency (RF) immunity (10V/m rms)
  • Certified IEC 61000-4-x immunity across isolation barrier
    • IEC 61000-4-2 ESD, IEC 61000-4-4 EFT, IEC 61000-4-5 surge, IEC 61000-4-6 conducted RF immunity, IEC 61000-4-3 radiated immunity, IEC 61000-4-8 magnetic immunity
  • RS-485 A, B pins human body model (HBM) ESD protection: >±30kV
  • Safety and regulatory approvals
    • DIN EN IEC 60747-17 (VDE 0884-17)
      • VIORM = 849V peak
    • UL 1577
      • VISO = 5000V rms for 1 minute
    • IEC/EN/CSA 60950-1
    • IEC/CSA 60601-1
    • IEC/CSA 61010-1
    • CQC GB4943.1
  • TIA/EIA RS-485/RS-422 compliant over full supply range
    • 3V to 5.5V operating voltage range on VDD2
    • 1.7V to 5.5V operating voltage range on VDD1 logic supply
  • Common-mode input range of −25V to +25V
  • High common-mode transient immunity: >75kV/μs
  • Robust noise immunity (tested to the IEC 62132-4 standard)
  • Passes EN55022 Class B radiated emissions by 6dBμV/m margin
  • Receiver short-circuit, open-circuit, and floating input fail-safe
  • Supports 256 bus nodes (96kΩ receiver input impedance)
  • −40°C to +125°C temperature option
  • Glitch free power-up/power-down (hot swap)

The ADM2795E is a 5 kV rms signal isolated RS-485 transceiver that features up to ±42 V of ac/dc peak bus overvoltage fault protection on the RS-485 bus pins. The device integrates Analog Devices, Inc., iCoupler® technology to combine a 3-channel isolator, RS-485 transceiver, and IEC electromagnetic compatibility (EMC) transient protection in a single package. The ADM2795E is a RS-485/RS-422 transceiver that integrates IEC 61000-4-5 Level 4 surge protection, allowing up to ±4 kV protection on the RS-485 bus pins (A and B). The device has IEC 61000-4-4 Level 4 EFT protection up to ±2 kV and IEC 61000-4-2 Level 4 ESD protection on the bus pins, allowing this device to withstand up to ±15 kV on the transceiver interface pins without latching up. This device has an extended common-mode input range of ±25 V to improve data communication reliability in noisy environments. The ADM2795E is capable of operating over wide power supply ranges, with a 1.7 V to 5.5 V VDD1 power supply range, allowing interfacing to low voltage logic supplies. The ADM2795E is also fully TIA/EIA RS-485/RS-422 compliant when operated over a 3 V to 5.5 V VDD2 power supply. The device is fully characterized over an extended operating temperature range of −40°C to +125°C, and is available in a 16-lead, wide-body SOIC package.

Applications

  • Heating, ventilation, and air conditioning (HVAC) networks
  • Industrial field buses
  • Building automation
  • Utility networks
ADM2795E

Robust 5 kV RMS Isolated RS-485/RS-422 Transceiver with Level 4 EMC and Full ±42 V Protection

ADM2795E Functional Block Diagram ADM2795E Pin Configuration
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project
Ask a Question

Documentation

Data Sheet 3

User Guide 2

Application Note 3

Informational 1

Safety and Regulatory Compliance 1

Learn More
Add to myAnalog

Add media to the Resources section of myAnalog, to an existing project or to a new project.

Create New Project

Tools & Simulations

IBIS Model 1

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
schematic 4
EVAL-ADM2795E

ADM2795E/ADM2795E-EP Evaluation Board

Buy Now View Details

Features and Benefits

  • 5 kV rms signal isolated RS-485/RS-422 transceiver
  • Convenient connections for power supplies and signals through screw terminal blocks and jumper connections
  • 1.7 V to 5.5 V operating voltage range on VDD1 logic supply
  • 3 V to 5.5 V operating voltage range on VDD2
  • −55°C to +125°C temperature range use EVAL-ADM2795EEPBZ
  • See user guide UG-997 and UG-1120 for additional features

Product Details

Use the EVAL-ADM2795EEBZ to easily evaluate the ADM2795E 5 kV rms signal isolated RS-485/RS-422 transceiver with Level 4 IEC EMC and 24 V supply fault protection. The EVAL-ADM2795EEBZ evaluation board is easily configured through jumper connections and screw terminal blocks for signal and power connections. The EVAL-ADM2795EEBZ can be powered with either a 9 V battery or a standard configurable bench top power supply. An on-board trimmer potentiometer and an on- board regulator circuit on both VDD1 and VDD2 allow easy power configuration when connected to a 9 V battery.


For −55°C to +125°C temperature ranges, use the EVAL-ADM2795EEPBZ. EVAL-ADM2795EEPBZ shares the same evaluation platform features and to support defense and aerospace applications (AQEC standard and DO-160G ESD & EMC).
EVAL-ADM2795E
ADM2795E/ADM2795E-EP Evaluation Board
EVAL-ADM2795EEBZANGLE-web EVAL-ADM2795EEBZBOTTOM-web EVAL-ADM2795EEBZTOP-web EVAL-ADM2795EEPBZ Image

Latest Discussions

1 Years Ago
Signal loss on differential bus
1 Years Ago
ADM2795E in RS422 mode, DO0160G protection
3 Years Ago
Interceptor update - NQ
View related discussion on EngineerZone®

Recently Viewed