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ADM3252E:  Isolated, Dual Channel RS-232 Line Driver/Receiver

Product Details

Product Status:Recommended for New Designs

The ADM3252E is a high speed, 2.5 kV fully isolated, dual-channel RS-232/V.28 transceiver device that is operational from a single 3.3 V or 5 V power supply. Because of high ESD protection on the RIN1, RIN2, TOUT1, and TOUT2 pins, the ADM3252E is ideally suited for operation in electrically harsh environments or where RS-232 cables are frequently plugged and unplugged.

The ADM3252E provides four independent isolation channels using the integrated and isolated power of isoPower. There is no requirement to use a separate isolated dc-to-dc converter. Chip scale transformer iCoupler® technology from Analog Devices, Inc., is used for both the isolation of the logic signals and the integrated dc-to-dc converter. The result is a total isolation solution.

isoPower technology in the ADM3252E uses high frequency switching elements to transfer power through its transformer. Special care must be taken during printed circuit board (PCB) layout to meet emissions standards. Refer to Application Note AN-0971, Recommendations for Control of Radiated Emissions with isoPower Devices, for details on board layout considerations.

The ADM3252E conforms to the EIA/TIA-232E and ITU-T V.28 specifications and operates at data rates of up to 460 kbps. Four external 0.1 μF charge pump capacitors are used for the voltage doubler/inverter, permitting operation from a single 3.3 V or 5 V supply. The ADM3252E is available in a 44-ball, chip scale package ball grid array (CSP_BGA) and is specified over the −40°C to +85°C temperature range.

APPLICATIONS

  • Isolated RS-232 interface
  • High noise data communications
  • Industrial communications
  • Industrial/telecommunications diagnostic ports
  • Medical equipment

FEATURES and BENEFITS

  • 2.5 kV fully isolated (power and data) RS-232 transceiver
  • isoPower integrated, isolated dc-to-dc converter
  • Operational from single 3.3 V or 5 V supply
  • 460 kbps data rate
  • 2 × Tx and 2 × Rx channels
  • Meets EIA/TIA-232E specifications
  • ESD protection on RINx and TOUTx pins
    -- Contact discharge: ±8 kV
    -- Air gap discharge: ±15 kV
  • 0.1 μF charge pump capacitors
  • High common-mode transient immunity: >25 kV/μs
  • Operating temperature range: −40°C to +85°C
  • 44-ball chip scale package ball grid array (CSP_BGA)
  • See data sheet for additional features

Functional Block Diagram for ADM3252E

Documentation

Title Content Type File Type
ADM3252E: Isolated, Dual Channel, RS-232 Line Driver/Receiver Data Sheet (Rev A, 01/2013) (pdf, 345 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-461: ezLINX iCoupler Isolated Interface Development Environment  (pdf, 1915 kB) User Guides PDF
UG-400: ezLINX™ iCoupler® Isolated Interface Development Environment  (pdf, 393 kB) User Guides PDF
UG-440: Evaluating the ADM3252E Isolated, Dual Channel, RS-232 Line Driver/Receiver  (pdf, 457 kB) User Guides PDF
Designing Robust Isolated RS-232 Data Interfaces for Harsh Industrial Applications
(Analog Dialogue, Maurice O'Brien)
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
Glossary of EE Terms Glossary HTML

Evaluation Kits & Symbols & Footprints

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Price, packaging, availability

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.

ADM3252E Evaluation board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-ADM3252EEBZ Status: Production Evaluation Board $75.00 Yes -
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 -

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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