ADM2490E 5 kV Signal Isolated, High Speed (16 Mbps), ESD Protected, Full Duplex RS-485 Transceiver

The ADM2490E is an isolated data transceiver with ±8 kV ESD protection that is suitable for high speed, full-duplex communication on multipoint transmission lines. It is designed for balanced transmission lines and complies with ANSI TIA/EIA-485-A-1998 and ISO 8482: 1987(E). The device employs Analog Devices, Inc., iCoupler® technology to combine a 2-channel isolator, a three-state differential line driver, and a differential input receiver into a single package.

The differential transmitter outputs and receiver inputs feature electrostatic discharge circuitry that provides protection to ±8 kV using the human body model (HBM). The logic side of the device can be powered with either a 5 V or a 3 V supply, whereas the bus side requires an isolated 5 V supply.

The device has current-limiting and thermal shutdown features to protect against output short circuits and situations where bus contention could cause excessive power dissipation.

The ADM2490E is available in a wide body, 16-lead SOIC package and operates over the −40°C to +105°C temperature range.

Applications

Features and Benefits
  • Isolated, full-duplex RS-485/RS-422 transceiver
  • ±8 kV ESD protection on RS-485 input/output pins
  • 16 Mbps data rate
  • Complies with ANSI TIA/EIA-485-A-1998 and ISO 8482: 1987(E)
  • Suitable for 5 V or 3 V operation (VDD1)
  • High common-mode transient immunity: >25 kV/μs
  • Receiver has open-circuit, fail-safe design
  • 32 nodes on the bus
  • Thermal shutdown protection
  • Safety and regulatory approvals
    • UL recognition: 5000 V rms isolation voltage for 1 minute per UL 1577
    • VDE certificate of conformity DIN EN 60747-5-2 (VDE 0884-10 Part 2): 2003-01 DIN EN 60950 (VDE 0805): 2001-12; EN 60950: 2000 VIORM = 848 V peak
  • UL recognition: 5000 V rms isolation voltage for 1 minute per UL 1577
  • VDE certificate of conformity
    • DIN EN 60747-5-2 (VDE 0884-10 Part 2): 2003-01
    • DIN EN 60950 (VDE 0805): 2001-12; EN 60950: 2000
    • VIORM = 848 V peak
  • DIN EN 60747-5-2 (VDE 0884-10 Part 2): 2003-01
  • DIN EN 60950 (VDE 0805): 2001-12; EN 60950: 2000
  • VIORM = 848 V peak
  • Operating temperature range: −40°C to +105°C
  • Wide body, 16-lead SOIC package
    • Interface & Isolation
    Data Sheets
    Documentnote
    ADM2490E: High Speed ESD Protected Full-Duplex iCoupler™ Isolated RS-485 Transceiver Data Sheet (Rev. A)PDF 552 kB
    Application Notes
    Documentnote
    AN-1179: Junction Temperature Calculation for Analog Devices RS-485/RS-422, CAN, and LVDS/M-LVDS Transceivers (Rev. A)PDF 156.87 K
    AN-0971: Recommendations for Control of Radiated Emissions with isoPower Devices (Rev. C)PDF 406 kB
    AN-1176: Component Footprints and Symbols in the Binary .Bxl File Format (Rev. 0)PDF 671 kB
    AN-960: RS-485/RS-422 Circuit Implementation Guide (Rev. 0)PDF 245 kB
    AN-727: iCoupler® Isolation in RS-485 Applications (Rev. 0)PDF 282 kB
    AN-740: iCoupler® Isolation in RS-232 Applications (Rev. 0)PDF 716 kB
    AN-793: ESD/Latch-Up Considerations with iCoupler® Isolation Products (Rev. A)PDF 246 kB
    AN-825: Power Supply Considerations in iCoupler® Isolation Products (Rev. 0)PDF 181 kB
    User Guides
    Documentnote
    UG-496: Evaluating the ADM2490E—5 kV, Signal Isolated, High Speed, 16 Mbps, ESD Protected, Full Duplex, iCoupler, Isolated RS-485 TransceiverPDF 176 kB
    Frequently Asked Questions
    Documentnote
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    ADM2490EBRWZ Production16 ld SOIC - WideOTH 47-40 to 105C5.014.55Y
    ADM2490EBRWZ-REEL7 Production16 ld SOIC - WideREEL 400-40 to 105C5.014.55Y
    Evaluation Boards
    Part NumberDescriptionPriceRoHS
    EVAL-ADM2490EEBZEvaluation Board75Y
    Reference Materials
    ADM2490E: High Speed ESD Protected Full-Duplex iCoupler™ Isolated RS-485 Transceiver Data Sheet (Rev. A) adm2490e
    AN-1179: Junction Temperature Calculation for Analog Devices RS-485/RS-422, CAN, and LVDS/M-LVDS Transceivers (Rev. A) adn4670
    AN-0971: isoPower器件的辐射控制建议 (Rev. C) adum1233
    AN-0971: Recommendations for Control of Radiated Emissions with isoPower Devices (Rev. C) ad7400
    AN-1176：二进制.Bxl文件格式的元件尺寸和符号 (Rev. 0) adn4670
    AN-1176: Component Footprints and Symbols in the Binary .Bxl File Format (Rev. 0) adn4670
    AN-793: iCoupler®隔离产品的ESD/闩锁考虑因素 (Rev. A) adum1233
    AN-740: RS-232应用中的Coupler® 隔离 (Rev. 0) adum1233
    AN-960: RS-485/RS-422电路实施指南 (Rev. 0) adm2486
    AN-727: RS-485应用中的iCoupler®隔离 (Rev. 0) adum1233
    AN-960: RS-485/RS-422 Circuit Implementation Guide (Rev. 0) adm2486
    AN-727: iCoupler® Isolation in RS-485 Applications (Rev. 0) ad7400
    AN-740: iCoupler® Isolation in RS-232 Applications (Rev. 0) ad7400
    AN-793: ESD/Latch-Up Considerations with iCoupler® Isolation Products (Rev. A) ad7400
    AN-825: iCoupler®隔离产品的电源考虑因素 (Rev. 0) adum1233
    AN-825: Power Supply Considerations in iCoupler® Isolation Products (Rev. 0) ad7400
    UG-496: Evaluating the ADM2490E—5 kV, Signal Isolated, High Speed, 16 Mbps, ESD Protected, Full Duplex, iCoupler, Isolated RS-48 adm2490e
    数字隔离器产品选型与资源指南 adum1233
    Emerging Energy Applications Solutions Bulletin, Volume 10, Issue 4 ad7656
    Test & Instrumentation Solutions Bulletin, Volume 10, Issue 3 ad7780
    ADI RS-485/RS-422 Cross Reference Guide adm2486
    Inside iCoupler® Technology:ADuM347x PWM Controller and Transformer Driver with ad7400
    NAppkin Note: Lowering the Power of the ADuM524x ad7400
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