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ADM2491E:  高速,ESD保护,半/全双工,iCoupler隔离RS-485收发器

产品详情

ADM2491E是一款隔离的数据收发器,具有±8 kV ESD保护功能,适合多点传输线路的高速半双工或全双工通信。对于半双工工作,发送器输出与接收器输入共用相同的传输线路。发送器输出引脚Y与接收器输入引脚A在外部连接,发送器输出引脚Z与接收器输入引脚B在外部连接。ADM2491E针对均衡的传输线路而设计,符合ANSI TIA/EIA RS-485-A-1998与ISO 8482: 1987(E)标准。这款器件采用ADI公司的iCoupler®技术,在单芯片内集成了三通道隔离器、三态差分线路驱动器以及差分输入接收器。

差分收发器输出与接收器输入具有静电放电电路,可为人体模型(HBM)提供±8 kV的保护。ADM2491E的逻辑端采用5 V或3.3 V电源供电,总线端则需要隔离的5 V电源。这款器件具有限流和过热关断特性,能够防止输出短路,并防止出现由于总线争用而引起功耗过大的情况。ADM2491E采用宽体16引脚SOIC封装,工作温度范围为-40°C ~ +85°C。

特点和优势

  • 隔离的RS-485/RS-422收发器,可配置为半双工或全双工模式
  • 在RS-485输入/输出引脚上提供±8 kV ESD保护功能
  • 数据速率:16 Mbps
  • 符合ANSI TIA/EIA RS-485-A-1998与ISO 8482:1987(E)标准
  • 工作电压:5 V或3.3 V(VDD1
  • 高共模瞬态抑制:>25 kV/@s
  • 接收器具有开路、故障安全设计
  • 总线上拥有32个节点
  • 过热关断保护功能
  • 安全与管理认证(审批中)
    UL认证:隔离电压5000V rms/min,符合UL 1577
    VDE符合证书
    DIN V VDE V 0884-10(VDE V 0884-10):2006-12
    强化绝缘,IORM = 848 V peak

ADM2491E功能框图


输入参数值,然后点击 PowerMe 查找适合此IC的电源解决方案。 PowerMe launch of ADIsimPower Voltage Regulator Design Tool
(标称值) 目标IC
可用系统电压 V 工作电压轨 V 负载电流 A

文档

快讯名称 内容类型 文件类型
ADM2491E: High Speed, ESD-Protected, Half-/Full-Duplex, iCoupler Isolated RS-485 Transceiver Data Sheet (Rev B, 12/2010) (pdf, 518 kB) 产品数据手册 PDF
AN-960: RS-485/RS-422电路实施指南  (pdf, 380 kB) 应用笔记 PDF
AN-960: RS-485/RS-422 Circuit Implementation Guide  (pdf, 245 kB) 应用笔记 PDF
AN-1176: Component Footprints and Symbols in the Binary .Bxl File Format  (pdf, 671 kB) 应用笔记 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.
在线研讨会 WEBCAST
Solving Isolation Challenges in Industrial Automation
This webcast will discuss the role isolation plays in providing protection and reducing the system bit-error-rate, using the specific design challenges of an RS-485 network. Topics to be covered in this presentation will include: Why and when one should isolate, Types of isolation and their advantages, Design Considerations for an RS-485 node (and how this translates to design considerations for signal isolation) as well as many other topics.
在线研讨会 WEBCAST
UG-302:±8 kV信号隔离、高速(16 Mbps)、ESD保护、全/半双工RS-485收发器ADM2491E的评估板  (pdf, 198 kB) 用户指导 PDF
使用同步采样ADC进行高性能多通道电力线监控[中文版]
作者:Colm Slattery,ADI公司 (模拟对话, 第41卷, 2007年1月)
《模拟对话》杂志 HTML
Inside iCoupler® Technology:ADuM347x PWM Controller and Transformer Driver with Quad-Channel Isolators Design Summary  (pdf, 291 kB)
By Flow Zhao, Design Engineer
技术文章 PDF
NAppkin Note: Lowering the Power of the ADuM524x  (pdf, 223 kB)
By Mark Cantrell, Senior Applications Engineer
技术文章 PDF
数字隔离器产品选型与资源指南  (pdf, 935 kB) 产品选型指南 PDF
2008 Medical Solution Profile  (pdf, 126 kB)
High Performance ICs for Medical Imaging, Patient Monitoring, and Instrumentation
概况 PDF
Industrial Automation Solutions  (pdf, 6110 kB) 概况 PDF
Emerging Energy Applications Solutions Bulletin, Volume 10, Issue 4  (pdf, 1496 kB) 解决方案通报 PDF
Test & Instrumentation Solutions Bulletin, Volume 10, Issue 3  (pdf, 1334 kB) 解决方案通报 PDF
How do I learn about new iCoupler products? 常见问题解答 HTML
Are iCoupler products Pb-free? 常见问题解答 HTML
Can I replace an optocoupler with an iCoupler product in an existing design? 常见问题解答 HTML
What are some of the distinguishing features of the iCoupler products? 常见问题解答 HTML
What communications protocols are supported by iCoupler products? 常见问题解答 HTML
What are the different types of iCoupler products? 常见问题解答 HTML
Do iCoupler products have VDE certification for reinforced insulation? 常见问题解答 HTML
With which regulatory standards do iCoupler products comply? 常见问题解答 HTML
How much isolation can iCoupler products provide? 常见问题解答 HTML
What are the benefits of iCoupler technology? 常见问题解答 HTML
What is iCoupler technology? 常见问题解答 HTML
What types of technologies have been used to provide isolation? 常见问题解答 HTML
What are optocouplers? What is optical isolation? 常见问题解答 HTML
What is capacitive isolation? 常见问题解答 HTML
What regulatory standards address isolation products? 常见问题解答 HTML
What is isolation? Why is it needed? 常见问题解答 HTML
What are common applications that use isolation? 常见问题解答 HTML
How is isolation specified? 常见问题解答 HTML
What is isolation rating? 常见问题解答 HTML
What is the relationship between working voltage and isolation rating? 常见问题解答 HTML
What is the difference between basic and double (or reinforced) insulation levels? 常见问题解答 HTML
What are transient immunity and common-mode rejection? 常见问题解答 HTML
What other parameters are important when considering an isolation device? 常见问题解答 HTML
RAQs index 非常见问题解答 HTML
术语表 专业词汇表 HTML

评估套件,原理图符号和PCB封装

评估板和开发套件查看评估板和套件页面以了解文档和采购信息

原理图符号和PCB封装— ADI公司提供与当今众多CAD系统兼容的原理图符号和PCB封装(Symbols & Footprints),以便更广泛、更轻松地使用。

Sample样片申请及购买

价格,封装及供货状态

ADM2491E 型号选项
产品型号 封装 引脚 温度范围 包装和数量 报价*(100-499) 报价*1000 pcs RoHS 查看PCN/PDN 查看库存/
购买/样片
ADM2491EBRWZ 产品状态: 量产 16 ld SOIC - Wide 16 工业 Tube, 47 $ 5.21 $ 4.76 Y  材料信息 查看PCN 订购 样片
ADM2491EBRWZ-REEL7 产品状态: 量产 16 ld SOIC - Wide 16 工业 Reel, 400 $ 5.21 $ 4.76 Y  材料信息 查看PCN 订购
帮助

这里所列出的美国报价单仅供预算参考,指美元报价(规定订量的每片美元,美国离岸价),如有修改不再另行通知。由于地区关税、商业税、汇率及手续费原因,国际报价可能不同。对于特殊批量报价,请与您当地的ADI公司办事处或代理商联络。对于评估板和套件的报价是指一个单位价格。

EZLINX™ ICOUPLER®隔离式接口开发环境
产品型号 描述 报价 RoHS 查看PCN/PDN 查看库存/
购买/样片
EZLINX-IIIDE-EBZ 产品状态: 量产 iCoupler® Isolated Interface Development Environment Evaluation Board $ 149.00 -
ADM2491E 评估板
产品型号 描述 报价 RoHS 查看PCN/PDN 查看库存/
购买/样片
EVAL-ADM2491EEBZ 产品状态: 量产 Evaluation Board $ 75.00 -

所示报价为单片价格。所列的美国报价单仅供预算参考,指美元报价(每片美国离岸价),如有修改,恕不另行通知。由于地区关税、商业税、汇率及手续费原因,国际报价可能不同。

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