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UG-543 

Evaluation Board User Guide 

 

Rev. 0 | Page 16 of 16 

RELATED LINKS 

Resource 

Description 

AN-960 

RS-485/RS-422 Circuit Implementation Guide 

RS-485/RS-422 Products 

RS-485/RS-422 Product Selection 

 

 

 

ESD Caution  
ESD (electrostatic discharge) sensitive device

. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection 

circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality. 

 

ESD Caution  
ESD (electrostatic discharge) sensitive device

. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection 

circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality. 

Legal Terms and Conditions 

By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions 

set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you 
have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement.  This Agreement is made by and between you (“Customer”) and Analog Devices, Inc. 

(“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal, 

temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY. Customer understands and agrees that the Evaluation Board is provided 

for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Furthermore, the license granted is expressly made subject to the following additional 
limitations: Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the Evaluation Board; and (ii) permit any Third Party to access the Evaluation Board. As used herein, the term 

“Third Party” includes any entity other than ADI, Customer, their employees, affiliates and in-house consultants. The Evaluation Board is NOT sold to Customer; all rights not expressly granted herein, including 

ownership of the Evaluation Board, are reserved by ADI. CONFIDENTIALITY. This Agreement and the Evaluation Board shall all be considered the confidential and proprietary information of ADI. Customer may 
not disclose or transfer any portion of the Evaluation Board to any other party for any reason. Upon discontinuation of use of the Evaluation Board or termination of this Agreement, Customer agrees to 

promptly return the Evaluation Board to ADI. ADDITIONAL RESTRICTIONS. Customer may not disassemble, decompile or reverse engineer chips on the Evaluation Board. Customer shall inform ADI of any 

occurred damages or any modifications or alterations it makes to the Evaluation Board, including but not limited to soldering or any other activity that affects the material content of the Evaluation Board. 

Modifications to the Evaluation Board must comply with applicable law, including but not limited to the RoHS Directive. TERMINATION. ADI may terminate this Agreement at any time upon giving written notice 
to Customer. Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF LIABILITY. THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED “AS IS” AND ADI MAKES NO 

WARRANTIES OR REPRESENTATIONS OF ANY KIND WITH RESPECT TO IT. ADI SPECIFICALLY DISCLAIMS ANY REPRESENTATIONS, ENDORSEMENTS, GUARANTEES, OR WARRANTIES, EXPRESS OR IMPLIED, RELATED 

TO THE EVALUATION BOARD INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, TITLE, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL 

PROPERTY RIGHTS. IN NO EVENT WILL ADI AND ITS LICENSORS BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES RESULTING FROM CUSTOMER’S POSSESSION OR USE OF 
THE EVALUATION BOARD, INCLUDING BUT NOT LIMITED TO LOST PROFITS, DELAY COSTS, LABOR COSTS OR LOSS OF GOODWILL. ADI’S TOTAL LIABILITY FROM ANY AND ALL CAUSES SHALL BE LIMITED TO THE 

AMOUNT OF ONE HUNDRED US DOLLARS ($100.00). EXPORT. Customer agrees that it will not directly or indirectly export the Evaluation Board to another country, and that it will comply with all applicable 

United States federal laws and regulations relating to exports. GOVERNING  LAW. This Agreement shall be governed by and construed in accordance with the substantive laws of the Commonwealth of 

Massachusetts (excluding conflict of law rules). Any legal action regarding this Agreement will be heard in the state or federal courts having jurisdiction in Suffolk County, Massachusetts, and Customer hereby 
submits to the personal jurisdiction and venue of such courts. The United Nations Convention on Contracts for the International Sale of Goods shall not apply to this Agreement and is expressly disclaimed.

 

©2013  Analog Devices, Inc. All rights reserved. Trademarks and  
 registered trademarks are the property of their respective owners. 
  

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Summary of Contents for EVAL-RS485FD8EBZ

Page 1: ...ing networks APPLICATIONS Full and half duplex RS 485 transceiver evaluation EVALUATION KIT CONTENTS 1 EVAL RS485HDEBZ or 1 EVAL RS485FD8EBZ or 1 EVAL RS485FDEBZ Main device available separately when ordering GENERAL DESCRIPTION The EVAL RS485HDEBZ EVAL RS485FD8EBZ and EVAL RS485FDEBZ allow quick and easy evaluation of RS 485 transceivers with standard SOIC footprints The evaluation board allows a...

Page 2: ...rd Configuration 3 Setting Up the Evaluation Board 3 Input Output Connections 3 Other Board Components 4 Evaluation with Applications 4 Evaluation Board Schematics and Layouts 7 EVAL RS485HDEBZ 7 EVAL RS485FD8EBZ 9 EVAL RS485FDEBZ 11 Ordering Information 13 EVAL RS485HDEBZ Bill of Materials 13 EVAL RS485FD8EBZ Bill of Materials 14 EVAL RS485FDEBZ Bill of Materials 15 Related Links 16 REVISION HIST...

Page 3: ...owing wire connections to equipment or a UART All boards include connections for data input DI and receiver output RO The half duplex and 14 lead SOIC full duplex evaluation boards also have connections for receiver enable RE and driver enable DE Alternatively these inputs can be driven by jumper connections to VCC and GND and or connected together see Table 2 Connections to an RS 485 bus are made...

Page 4: ...nimum differential input voltage VID between A and B of 200 mV Different resistor values are required depending on whether a 3 3 V or 5 V supply is used and how much noise margin is required that is VID 200 mV ADM3070E to ADM3078E and ADM4850 to ADM4857 have built in failsafe for the bus idle condition For guidelines refer to AN 960 Application Note RS 485 RS 422 Circuit Implementation Guide EVALU...

Page 5: ... Z connections should only be connected to other RS 485 receiver inputs as shown in Figure 6 for a multinode bus These full duplex parts without driver or receiver enable inputs can also typically be used in point to point four wire RS 485 bus connections OSCILLOSCOPE A LK2 LK3 B C D A B C SHIELD A RO RE DE DI B Z Y GND RO RE DE DI LK5 LK6 A B Z Y GND J1 J3 J2 VCC EVAL RS485FDEBZ 3 3V OR 5V SUPPLY...

Page 6: ...SUPPLY NOTES 1 REMOVE 50Ω TERMINATION RESISTORS FROM EVALUATION BOARD 2 MAXIMUM NUMBER OF NODES 32 3 RT IS EQUAL TO THE CHARACTERISTIC IMPEDANCE OF THE CABLE USED RT RT RT RT MASTER NODE SLAVE SLAVE SLAVE A Y Z B NODE N A Y Z B NODE 2 A Y Z B NODE 1 MICROCONTROLLER PROCESSOR 11390 006 J3 Figure 6 Full Duplex 8 Lead SOIC RS 485 Board Connected to Bus and Control Board ...

Page 7: ...Evaluation Board User Guide UG 543 Rev 0 Page 7 of 16 EVALUATION BOARD SCHEMATICS AND LAYOUTS EVAL RS485HDEBZ 11390 007 Figure 7 EVAL RS485HDEBZ Schematic ...

Page 8: ...UG 543 Evaluation Board User Guide Rev 0 Page 8 of 16 11390 008 Figure 8 EVAL RS485HDEBZ Silkscreen 11390 009 Figure 9 EVAL RS485HDEBZ Component Side 11390 010 Figure 10 EVAL RS485HDEBZ Solder Side ...

Page 9: ...Evaluation Board User Guide UG 543 Rev 0 Page 9 of 16 EVAL RS485FD8EBZ 11390 011 Figure 11 EVAL RS485FD8EBZ Schematic ...

Page 10: ...G 543 Evaluation Board User Guide Rev 0 Page 10 of 16 11390 012 Figure 12 EVAL RS485FD8EBZ Silkscreen 11390 013 Figure 13 EVAL RS485FD8EBZ Component Side 11390 014 Figure 14 EVAL RS485FD8EBZ Solder Side ...

Page 11: ...Evaluation Board User Guide UG 543 Rev 0 Page 11 of 16 EVAL RS485FDEBZ 11390 015 Figure 15 EVAL RS485FDEBZ Schematic ...

Page 12: ...UG 543 Evaluation Board User Guide Rev 0 Page 12 of 16 11390 016 Figure 16 EVAL RS485FDEBZ Silkscreen 11390 017 Figure 17 EVAL RS485FDEBZ Component Side 11390 018 Figure 18 EVAL RS485FDEBZ Solder Side ...

Page 13: ...win M7566 05 2 LK3 LK4 Jumper Block 2 pin 0 1 spacing Harwin M20 9990246 and Harwin M7566 05 2 R1 R2 Not placed optional Not applicable 1 R3 Resistor 0 Ω 0805 Vishay Draloric CRCW08050000Z0EA 2 RT1 RT2 Resistor 120 Ω 0805 Multicomp MC 0 1W 0805 1 120R 1 U1 8 lead SOIC not placed Analog Devices Inc see Table 4 1 VCC Test point red Vero Technologies 20 313137 Table 4 EVAL RS485HDEBZ Options for U1 H...

Page 14: ...d Harwin M7566 05 2 R1 R2 Not placed optional Not applicable 1 R3 Resistor 0 Ω 0805 Vishay Draloric CRCW08050000Z0EA 2 RT1 RT2 Resistor 120 Ω 0805 Multicomp MC 0 1W 0805 1 120R 1 U1 8 lead SOIC not placed Analog Devices see Table 6 1 VCC Test point red Vero Technologies 20 313137 Table 6 EVAL RS485FD8EBZ Options for U1 Full Duplex RS 485 Transceivers 8 Lead SOIC Enhanced ESD 3 3 V Supply Enhanced ...

Page 15: ...0 1 header and shorting block Harwin M20 9953646 and Harwin M7566 05 2 LK5 LK6 Jumper Block 2 pin 0 1 spacing Harwin M20 9990246 and Harwin M7566 05 2 R1 R2 Not placed optional Not applicable 1 R3 Resistor 0 Ω 0805 Vishay Draloric CRCW08050000Z0EA 2 RT1 RT2 Resistor 120 Ω 0805 Multicomp MC 0 1W 0805 1 120R 1 U1 14 lead SOIC not placed Analog Devices see Table 8 1 VCC Test point red Vero Technologi...

Page 16: ...he Evaluation Board are reserved by ADI CONFIDENTIALITY This Agreement and the Evaluation Board shall all be considered the confidential and proprietary information of ADI Customer may not disclose or transfer any portion of the Evaluation Board to any other party for any reason Upon discontinuation of use of the Evaluation Board or termination of this Agreement Customer agrees to promptly return ...

Page 17: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Analog Devices Inc EVAL RS485HDEBZ EVAL RS485FDEBZ EVAL RS485FD8EBZ ...

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