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  3. Digital Isolation Technology
  4. Isolated RS-485
  5. ADM2795E

View All Data Sheets (3)
Data Sheet Rev. B
JP Rev. B
User Guides
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IBIS Models
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Overview

Features and Benefits

  • 5 kV rms isolated RS-485/RS-422 transceiver
  • ±42 V 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 (±4 kV)
    • IEC 61000-4-4 electrical fast transient (EFT) protection (±2 kV)
    • IEC 61000-4-2 electrostatic discharge (ESD) protection
      • ±8 kV contact discharge
      • ±15 kV air discharge
    • IEC 61000-4-6 conducted radio frequency (RF) immunity (10 V/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: >±30 kV
  • Safety and regulatory approvals (pending)
    • CSA Component Acceptance Notice 5A, DIN V VDE V 0884-10, UL 1577, CQC11-471543-2012
  • TIA/EIA RS-485/RS-422 compliant over full supply range
    • 3 V to 5.5 V operating voltage range on VDD2
    • 1.7 V to 5.5 V operating voltage range on VDD1 logic supply
  • Common-mode input range of −25 V to +25 V
  • High common-mode transient immunity: >75 kV/μs
  • Robust noise immunity (tested to the IEC 62132-4 standard)
  • Passes EN55022 Class B radiated emissions by 6 dBμV/m margin
  • Receiver short-circuit, open-circuit, and floating input fail-safe
  • Supports 256 bus nodes (96 kΩ receiver input impedance)
  • −40°C to +125°C temperature option
  • Glitch free power-up/power-down (hot swap)
ADM2795E-EP supports defense and aerospace applications (AQEC standard)
  • Download ADM2795E-EP data sheet (pdf)
  • Military −55°C to +125°C temperature range
  • Controlled manufacturing baseline
  • 1 assembly/test site
  • Enhanced product change notification
  • Qualification data available on request
  • V62/17611 DSCC Drawing Number

Product Details

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

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At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Documentation & Resources

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  • 3rd Party Solutions (1)
  • Data Sheets (3)
  • Application Notes (2)
  • User Guides (2)
  • Safety and Regulatory Compliance (1)
  • Informational (1)
  • Product Selection Guide (1)
  • Videos (2)
  • Press Releases (1)
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  • Technical Articles (1)
    • Document Type

    Tools & Simulations

    IBIS Models

    Design Resources

    ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    ADM2795EARWZ Material Declaration Reliability Data 16 ld SOIC
    ADM2795EARWZ-RL7 Material Declaration Reliability Data 16-Lead SOIC Wide
    ADM2795EBRWZ Material Declaration Reliability Data 16-Lead SOIC Wide
    ADM2795EBRWZ-RL7 Material Declaration Reliability Data 16 ld SOIC
    ADM2795ETRWZ-EP Material Declaration Reliability Data 16-Lead SOIC Wide
    ADM2795ETRWZ-EP-R7 Material Declaration Reliability Data 16-Lead SOIC Wide
    Wafer Fabrication Data

    Support & Discussions

    ADM2795E Discussions

    RE: ADM2795EARWZ and ADM2795EBRWZ Differences
    RE: ADUM5020 and ADUM5028 for RS-485 Circuit
    All ADM2795E Discussions
    ADM2795E Contact ADI Technical Support »
    ADM2795E Ask your question »
    ADM2795E Contact ADI Technical Support » ADM2795E Ask your question »

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