2.5 kV Signal and Power Isolated, ±15 kV ESD Protected, Full/Half Duplex RS-485 Transceiver (16Mbps)
The ADM2582E/ADM2587E are fully integrated signal and power isolated data transceivers with ±15 kV ESD protection and are suitable for high speed communication on multipoint transmission lines. The ADM2582E/ADM2587E include an
integrated isolated dc-to-dc power supply, which 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 ADM2582E/ADM2587E driver has 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, 20-lead, wide-body SOIC package.
The ADM2582E/ADM2587E 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 the AN-0971 Application Note, Control of Radiated Emissions with isoPower Devices, for details on board layout considerations.
- Isolated RS-485/RS-422 interfaces
- Industrial field networks
- Multipoint data transmission systems
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.
The ADM2582E power and signal isolated RS-485 transceivers have two options for easy evaluation: the EVAL-ADM2582EEBZ 6-Layer EN55022 Class B Radiated Emissions Compliant Evaluation Board or the EVAL-ADM2582EEMIZ 2-Layer EN55022 Class A Radiated Emissions Compliant Evaluation Board. Both evaluation boards options are populated with an ADM2582E 20-lead wide-body SOIC component.
The EVAL-ADM2582EEBZ evaluation board is designed to reduce emissions generated by the high frequency switching elements used by the isoPower® technology to transfer power through its transformer. The 6 layer board layout was generated using the guidelines provided in the AN-0971 Application Note, Recommendations for Control of Radiated Emissions with isoPower Devices. The EVAL-ADM2582EEBZ evaluation board was tested at an independent test facility. The evaluation board passed the IEC 61000-4-5 surge testing up to 2 kV.
The EVAL-ADM2582EEMIZ is designed to reduce emissions generated by the high frequency switching elements used by the isoPower® technology to transfer power through the ADM2582E/ADM2587E integrated transformer. The 2 layer board layout is generated using the guidelines provided in the AN-1349 Application Note, PCB Implementation Guidelines to Minimize Radiated Emissions on the ADM2582E/ADM2587E RS-485/RS-422 Transceivers. The EVAL-ADM2582EEMIZ evaluation boards are tested and certified to pass EN55022 Class A.
Safety and Regulatory Compliance
Safety and Regulatory Compliance Information
The iCoupler® family of digital isolation products have been tested and approved by various regulatory agencies,...
Product Selection Guide
Digital Isolator Product Selection and Resource Guide
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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.