ADM2682E 16Mbps, 5 kV rms Signal & Power Isolated RS-485 Transceiver with ±15 kV ESD Protection

Isolated RS-485/RS-422 interfaces Industrial field networks Multipoint data transmission systems

The ADM2682E/ADM2687E are fully integrated 5 kV rms signal and power isolated data transceivers with ±15 kV ESD protection and are suitable for high speed communication on multipoint transmission lines. The ADM2682E / ADM2687E include an integrated 5 kV rms isolated dc-to-dc power supply that eliminates the need for an external dc-to-dc isolation block.

They are designed for balanced transmission lines and comply with ANSI/TIA/EIA-485-A-98 and ISO 8482:1987(E).

The devices integrate Analog Devices, Inc., iCoupler® technology to combine a 3-channel isolator, a three-state differential line driver, a differential input receiver, and Analog Devices isoPower® dc-to-dc converter into a single package. The devices are powered by a single 5 V or 3.3 V supply, realizing a fully integrated signal and power isolated RS-485 solution.

The ADM2682E/ADM2687E drivers have an active high enable. An active low receiver enable is also provided, which causes the receiver output to enter a high impedance state when disabled.

The devices have current limiting and thermal shutdown features to protect against output short circuits and situations where bus contention may cause excessive power dissipation. The parts are fully specified over the industrial temperature range and are available in a highly integrated, 16-lead, wide- body SOIC package with >8 mm creepage and clearance.

The ADM2682E/ADM2687E contain isoPower technology that uses high frequency switching elements to transfer power through the transformer. Special care must be taken during printed circuit board (PCB) layout to meet emissions standards. Refer to AN-0971 Application Note, Recommendations for Control of Radiated Emissions with isoPower Devices, for details on board layout considerations.

Applications

Features and Benefits
  • 5 kV rms isolated RS-485/RS-422 transceiver, configurable as half or full duplex
  • isoPower® integrated isolated dc-to-dc converter
  • ±15 kV ESD protection on RS-485 input/output pins
  • Complies with ANSI/TIA/EIA-485-A-98 and ISO 8482:1987(E)
  • Data rate: 16 Mbps
  • 5 V or 3.3 V operation
  • Connect up to 256 nodes on one bus
  • Open- and short-circuit, fail-safe receiver inputs
  • High common-mode transient immunity: >25 kV/μs
  • See data sheet for additional features
  • Interface & Isolation
    Data Sheets
    Documentnote
    ADM2682E/ADM2687E: 5 kV rms Signal and Power Isolated RS-485 Transceiver with ±15 kV ESD Protection Data Sheet (Rev. C)PDF 1030 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
    User Guides
    Documentnote
    UG-317: Evaluation Board for the ADM2682E/ADM2687E 5 kV rms Signal and Power Isolated RS-485 Transceivers with ±15 kV ESD ProtectionPDF 562 kB
    Frequently Asked Questions
    Documentnote
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    ADM2682EBRIZ Production16 ld SOIC (increased Creepage)OTH 37-40 to 85C8.827.5Y
    ADM2682EBRIZ-RL7 Production16 ld SOIC (increased Creepage)REEL 400-40 to 85C8.827.5Y
    Evaluation Boards
    Part NumberDescriptionPriceRoHS
    EVAL-ADM2682EEBZEvaluation Board75Y
    Reference Materials
    ADM2682E/ADM2687E: 5 kV rms Signal and Power Isolated RS-485 Transceiver with ±15 kV ESD Protection Data Sheet (Rev. C) adm2682e
    ADM2682E/ADM2687E: 5 kV rms信号和电源隔离RS-485收发器,提供±15 kV ESD保护 (Rev. 0) adm2682e
    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
    UG-317: Evaluation Board for the ADM2682E/ADM2687E 5 kV rms Signal and Power Isolated RS-485 Transceivers with ±15 kV ESD Protec adm2682e
    数字隔离器产品选型与资源指南 adum1233
    Creepage Requirements for Medical Applications adm2682e