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ADM3251E:  Isolated Single Channel RS-232 Line Driver/Receiver

Product Details


The ADM3251E is a high speed, 2.5 kV fully isolated, single- channel RS-232/V.28 transceiver device that operates from a single 5 V power supply. Due to the high ESD protection on the RIN and TOUT pins, the device is ideally suited for operation in electrically harsh environments or where RS-232 cables are frequently being plugged and unplugged.

The ADM3251E incorporates dual-channel digital isolators with isoPower™ integrated, isolated power. There is no requirement to use a separate isolated dc-to-dc converter. Chip-scale transformer iCoupler® technology from Analog Devices, Inc., is used both for the isolation of the logic signals as well as for the inte- grated dc-to-dc converter. The result is a total isolation solution.

The ADM3251E contains isoPower technology that uses high frequency switching elements to transfer power through thetransformer. Special care must be taken during printed circuit board (PCB) layout to meet emissions standards. Refer to Application Note AN-0971, Control of Radiated Emissions with isoPower Devices, for details on board layout considerations. The ADM3251E conforms to the EIA/TIA-232E and ITU-T V. 28 specifications and operates at data rates up to 460 kbps. Four external 0.1 μF charge pump capacitors are used for the voltage doubler/inverter, permitting operation from a single 5 V supply.

The ADM3251E is available in a 20-lead, wide body SOIC package and is specified over the −40°C to +85°C temperature range.

Applications

  • High noise data communications
  • Industrial communications
  • General-purpose RS-232 data links
  • Industrial/telecommunications diagnostic ports
  • Medical equipment

FEATURES and BENEFITS

  • Chinese data sheet available
  • 2.5 kV fully isolated (power and data) RS-232 transceiver
  • isoPower integrated, isolated dc-to-dc converter
  • 460 kbps data rate
  • 1 Tx and 1 Rx
  • Meets EIA/TIA-232E specifications
  • ESD protection on RIN and TOUT pins
    ±8 kV: contact discharge
    ±15 kV: air gap discharge
  • 0.1 μF charge pump capacitors
  • High common-mode transient immunity: >25 kV/μs
  • Safety and regulatory approvals
    UL recognition
    2500 V rms for 1 minute per UL 1577
    VDE Certificate of Conformity (pending)
    DIN EN 60747-5-2 (VDE 0884 Teil 2): 2003-01
    CSA Component Acceptance Notice #5A (pending)
  • Operating temperature range: −40°C to +85°C
  • Wide body, 20-lead SOIC package

Functional Block Diagram for ADM3251E

Documentation

Title Content Type File Type
ADM3251E: Isolated, Single-Channel RS-232 Line Driver/Receiver Data Sheet (Rev G, 10/2013) (pdf, 266 kB) Data Sheets PDF
Solving Isolation Challenges in Power Conversion Applications
This webcast will present solutions to isolation challenges in power conversion applications. Among the topics to be discussed are the limitations of traditional methods of isolation (such as utilization of optocouplers and pulse transformers) vs. more efficient and cost effective solutions that utilize digital isolators. If you are currently using optocouplers and pulse transformers, this is a webcast you should attend.
Webcasts WEBCAST
UG-181: PLC Demo System User Guide  (pdf, 541 kB) User Guides PDF
UG-124: EMI optimized evaluation kit user guide for the ADM3251E  (pdf, 191 kB)
Learn more about the EMI optimized 6-layer ADM3251E evaluation board that can be used for easy evaluation of the ADM3251E RS-232 transceiver with isolated power and signal.
User Guides PDF
UG-120: Standard Evaluation Kit User Guide for the ADM3251E  (pdf, 158 kB)
Learn more about the simple, 2-layer ADM3251E evaluation board that can be used for easy evaluation of the ADM3251E RS-232 transceiver with isolated power and signal.
User Guides PDF
PLC Evaluation Board Simplifies Design of Industrial Process Control Systems
(Analog Dialogue, Vol. 43, April 2009)
Analog Dialogue HTML
Designing Robust Isolated RS-232 Data Interfaces for Harsh Industrial Applications
(Analog Dialogue, Maurice O'Brien)
Technical Articles HTML
Inside iCoupler® Technology:ADuM347x PWM Controller and Transformer Driver with Quad-Channel Isolators Design Summary  (pdf, 291 kB)
By Flow Zhao, Design Engineer
Technical Articles PDF
NAppkin Note: Lowering the Power of the ADuM524x  (pdf, 223 kB)
By Mark Cantrell, Senior Applications Engineer
Technical Articles PDF
Simplifying Design of Industrial Process-Control Systems with PLC Evaluation Boards
PLC evaluation board applications for industrial process-control systems are diverse, ranging from simple traffic control to complex electrical power grids, from environmental control systems to oil-refinery process control.
(Industrial Control DesignLine, 8/24/09 - Part 1 and 9/3/09 - Part 1)
Technical Articles HTML
Simplifying Design of Industrial Process-Control Systems with PLC Evaluation Boards (Part 1 of 2)
PLC evaluation board applications for industrial process-control systems are diverse, ranging from simple traffic control to complex electrical power grids, from environmental control systems to oil-refinery process control.
(Industrial Control DesignLine, 8/24/09)
Technical Articles HTML
PLC Evaluation Board Simplifies Design of Industrial Process Control Systems
(Analog Dialogue, Vol. 43, April 2009)
Technical Articles HTML
Digital Isolator Product Selection and Resource Guide  (pdf, 640 kB) Product Selection Guide PDF
Analog Devices Achieves Major Milestone by Shipping 1 Billionth Channel of iCoupler Digital Isolation (19 Sep 2013) Press Releases HTML
2008 Medical Solution Profile  (pdf, 126 kB)
High Performance ICs for Medical Imaging, Patient Monitoring, and Instrumentation
Overview PDF
RS-232 Transceivers Applications Bulletin (Summer 2008)  (pdf, 196 kB) Solutions Bulletins PDF
How do I learn about new iCoupler products? FAQs/RAQs HTML
Are iCoupler products Pb-free? FAQs/RAQs HTML
Can I replace an optocoupler with an iCoupler product in an existing design? FAQs/RAQs HTML
What are some of the distinguishing features of the iCoupler products? FAQs/RAQs HTML
What communications protocols are supported by iCoupler products? FAQs/RAQs HTML
What are the different types of iCoupler products? FAQs/RAQs HTML
Do iCoupler products have VDE certification for reinforced insulation? FAQs/RAQs HTML
With which regulatory standards do iCoupler products comply? FAQs/RAQs HTML
How much isolation can iCoupler products provide? FAQs/RAQs HTML
What are the benefits of iCoupler technology? FAQs/RAQs HTML
What is iCoupler technology? FAQs/RAQs HTML
What types of technologies have been used to provide isolation? FAQs/RAQs HTML
What are optocouplers? What is optical isolation? FAQs/RAQs HTML
What is capacitive isolation? FAQs/RAQs HTML
What regulatory standards address isolation products? FAQs/RAQs HTML
What is isolation? Why is it needed? FAQs/RAQs HTML
What are common applications that use isolation? FAQs/RAQs HTML
How is isolation specified? FAQs/RAQs HTML
What is isolation rating? FAQs/RAQs HTML
What is the relationship between working voltage and isolation rating? FAQs/RAQs HTML
What is the difference between basic and double (or reinforced) insulation levels? FAQs/RAQs HTML
What are transient immunity and common-mode rejection? FAQs/RAQs HTML
What other parameters are important when considering an isolation device? FAQs/RAQs HTML
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

SampleSample & Buy

Price, packaging, availability

ADM3251E Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADM3251EARWZ Status: Production 20 ld SOIC - Wide 20 Ind Tube, 37 $3.50 $2.99 Y  Material Info PCN Purchase Sample
ADM3251EARWZ-REEL Status: Production 20 ld SOIC - Wide 20 Ind Reel, 1000 - $2.99 Y  Material Info PCN Purchase
Price Table Help

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.

ezLINX™ iCoupler® Isolated Interface Development Environment
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EZLINX-IIIDE-EBZ Status: Production iCoupler® Isolated Interface Development Environment Evaluation Board $149.00 Yes -
ADM3251E Evaluation board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-ADM3251EEB1Z Status: Production Evaluation Board - EMI optimized 6-layer $45.00 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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