EVAL-ADM2587EEBZ

Evaluation Board User Guide UG-044 One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com Evaluation Board for the ADM2582E/ADM2587E 2.5 kV rms Signal and Power Isolated RS-485 Transceivers with ±15 kV ESD Protection FEATURES EVALUATION BOARD Power and signal isolated RS-485/RS-422 transceiver Convenient connections for power and signal through screw terminal blocks Configurable as half duplex or full duplex 5 V or 3.3 V operation Easily configurable through jumper connections Test points for measuring all signals Layout optimized for emissions according to the AN-0971 Application Note Passed EN 55022(2001) Class B emissions standard Passed IEC 61000-4-5 surge testing up to 2 kV EVALUATION KIT CONTENTS 08420-001 EVAL-ADM2582EEBZ or EVAL-ADM2587EEBZ Figure 1. GENERAL DESCRIPTION RADIATED EMISSIONS The ADM2582E/ADM2587E evaluation board can be used for easy evaluation of the ADM2582E and ADM2587E power and signal isolated RS-485 transceivers. Screw terminal blocks provide convenient connections for the power and signal connections. The ADM2582E/ADM2587E 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 layout of the evaluation board was generated using the guidelines provided in the AN-0971 Application Note, Recommendations for Control of Radiated Emissions with isoPower Devices. The emissions of the evaluation board were measured by an independent test facility and passed the EN 55022(2001) Class B emissions standard. The evaluation board is easily configured through jumper connections. The board can be used in half-duplex or full-duplex configurations and has a 120 Ω termination resistor fitted on the receiver input. The evaluation board can be used with either the 16 Mbps ADM2582E or the 500 kbps ADM2587E. The driver and receiver are enabled and disabled by jumper connections. Test points are included on the power and signal lines on both sides of the isolation barrier. PLEASE SEE THE LAST PAGE FOR AN IMPORTANT WARNING AND LEGAL TERMS AND CONDITIONS. IEC 61000-4-5 SURGE TEST The ADM2582E/ADM2587E evaluation board was tested at an independent test facility using the circuit shown in Figure 2. The evaluation board passed the IEC 61000-4-5 surge testing up to 2 kV. The test pulses used and results of the testing are shown in Table 1. Rev. B | Page 1 of 12 UG-044 Evaluation Board User Guide TABLE OF CONTENTS Features .............................................................................................. 1  Jumper Settings ..............................................................................4  Evaluation Kit Contents ................................................................... 1  Termination and Pull-Up/Pull-Down Resistors .......................5  General Description ......................................................................... 1  Decoupling and Reservoir Capacitors ........................................5  Evaluation Board .............................................................................. 1  Board Internal Layer Thickness ..................................................5  Radiated Emissions .......................................................................... 1  Evaluation Board Schematics...........................................................6  IEC 61000-4-5 Surge Test ................................................................ 1  Assembly Drawings and Board Layout ..........................................7  Revision History ............................................................................... 2  Ordering Information .................................................................... 10  IEC 61000-4-5 Surge Test Circuit and Results.............................. 3  Bill of Materials ........................................................................... 10  Evaluation Board Hardware Configuration .................................. 4  Related Links ............................................................................... 10  REVISION HISTORY 5/12—Rev. A to Rev. B Changes to User Guide Title, Features Section, and IEC 61000-4-5 Surge Test Section .................................................. 1 Changes to Table 1 ............................................................................ 3 Changes to Jumper Settings Section and Table 2 ......................... 4 Changes to Decoupling and Reservoir Capacitors Section ........ 5 Moved Evaluation Board Schematics Section .............................. 6 Changes to Figure 3 .......................................................................... 6 Moved Assembly Drawings and Board Layout Section .............. 7 Changes to Related Links Section ................................................ 10 10/11—Rev. 0 to Rev. A Changes to User Guide Title, Features Section, and Figure 1 .....1 Added Evaluation Kit Contents Section and IEC61000-4-5 Surge Test Section ..............................................................................1 Added IEC61000-4-5 Surge Test Circuit and Results Section, Figure 2, and Table 1; Renumbered Sequentially ..........................3 Changes to Figure 3 ...........................................................................4 Changes to LK14 Description and Image Columns, Table 2 .......8 Added Termination and Pull-Up/Pull-Down Resistors Section ...9 Changes to Decoupling and Reservoir Capacitors Section .........9 Added Ordering Guide Section, Bill of Materials Section, Table 4, and Related Links Section ............................................... 10 11/09—Revision 0: Initial Version Rev. B | Page 2 of 12 Evaluation Board User Guide UG-044 IEC 61000-4-5 SURGE TEST CIRCUIT AND RESULTS VCC VISOOUT isoPower DC-TO-DC CONVERTER OSCILLATOR RECTIFIER VISOIN REGULATOR CDN DIGITAL ISOLATION iCoupler TxD DE TRANSCEIVER ENCODE DECODE ENCODE DECODE DECODE ENCODE D R 42Ω Y SURGE GENERATOR Z CONNECTOR GND1 A RxD RE R B RT 120Ω GND1 ISOLATION BARRIER 08420-026 ADM2582E/ADM2587E GND2 Figure 2. Block Diagram of the IEC 61000-4-5 Surge Test on the ADM2582E/ADM2587E Evaluation Board Table 1. Results of Surge Test to EN 61000-4-5, Passed Up to 2 kV (Test Report Available on Request at transceivers@analog.com) Voltage (V) 260 2000 Polarity + + Number of Pulses 1 1 Result Passed Passed Rev. B | Page 3 of 12 UG-044 Evaluation Board User Guide EVALUATION BOARD HARDWARE CONFIGURATION JUMPER SETTINGS The inputs to the ADM2582E/ADM2587E can be configured using the jumpers on the evaluation board (see Table 2). Note that multiple jumper blocks should not be placed on LK1 to LK4 because the input sources may be shorted together. For each link, a single jumper block can be moved from one position to another, as specified in Table 2. In addition, if LK14 is closed to connect DE and RE, either LK2 or LK3 should be free of any jumpers to avoid shorting two input sources together. Table 2. Jumper Configuration Link LK1 Connection A Description Connects the receiver output (RxD) of the ADM2582E/ADM2587E to the J3 connector. B Connects the receiver output (RxD) of the ADM2582E/ADM2587E to the J8-1 terminal block connector. A B A Connects the receiver enable input (RE) of the ADM2582E/ADM2587E to VCC. This setting disables the receiver. Connects the receiver enable input (RE) of the ADM2582E/ADM2587E to GND1. This setting enables the receiver. Connects the receiver enable input (RE) of the ADM2582E/ADM2587E to the J8-2 terminal block connector. A B C A Connects the driver enable input (DE) of the ADM2582E/ADM2587E to VCC. This setting enables the driver. A B C B Connects the driver enable input (DE) of the ADM2582E/ADM2587E to GND1. This setting disables the driver. A B C C Connects the driver enable input (DE) of the ADM2582E/ADM2587E to the J8-3 terminal block connector. A B C A Connects the driver input (TxD) of the ADM2582E/ADM2587E to the J8-4 terminal block connector. A B B Connects the driver input (TxD) of the ADM2582E/ADM2587E to the J2 connector. A B LK5 Closed LK5 LK6 Open Closed LK14 Open Closed Connects the ADM2582E/ADM2587E Receiver Input A to Driver Output Y. When LK5 and LK6 are both closed, the evaluation board is configured for half-duplex operation. When LK5 and LK6 are both open, the evaluation board is configured for full-duplex operation. Connects the ADM2582E/ADM2587E Receiver Input B to Driver Output Z. When LK5 and LK6 are both closed, the evaluation board is configured for half-duplex operation. When LK5 and LK6 are both open, the evaluation board is configured for full-duplex operation. Connects the driver enable input (DE) of the ADM2582E/ADM2587E to the receiver enable input (RE); that is, the input for both DE and RE is set by LK3 (when LK2 is left open). This setting ensures that when the driver is enabled, the receiver is disabled, or that when the driver is disabled, the receiver is enabled. Note: leave either LK2 or LK3 open in all positions to avoid shorting two input sources together. Disconnects the driver enable input (DE) of the ADM2582E/ADM2587E from the receiver enable input (RE) of the ADM2582E/ADM2587E. LK2 B C LK3 LK4 Open Rev. B | Page 4 of 12 Image A B A B C A B C LK5 LK6 LK6 LK14 A LK2 B C LK14 Evaluation Board User Guide UG-044 TERMINATION AND PULL-UP/PULL-DOWN RESISTORS DECOUPLING AND RESERVOIR CAPACITORS The evaluation board includes the RT and RT1 footprints for fitting termination resistors between the A and B receiver inputs and the Y and Z driver outputs. By default, the board is fitted with a 120 Ω resistor, RT, between A and B. This resistor should be removed if the board is connected to a bus that is already terminated at both ends. For more information about proper termination, see the AN-960 Application Note, RS-485/RS-422 Circuit Implementation Guide. Although the ADM2582E/ADM2587E have a built-in receiver fail-safe for the bus idle condition, there are footprints on the evaluation board for fitting the R3 and R1 pull-up resistors to VISO on A and Y, as well as the R4 and R2 pull-down resistors to GND2 on B and Z. These resistors can be fitted if the user is connecting to other parts that require such external biasing resistors on the bus. The exact value required for a 200 mV minimum differential voltage in the bus idle condition depends on the supply voltage (for example, 960 Ω for 3.3 V and 1440 Ω for 5 V). For more information about the bus idle fail-safe, see the AN-960 Application Note, RS-485/RS-422 Circuit Implementation Guide. The evaluation board uses the following decoupling and reservoir capacitors: • • On the logic side of the board, the C1 and C2 capacitors should be 100 nF and 10 µF ceramic capacitors, respectively, and the C4 and C6 capacitors should be 10 nF and 100 nF ceramic capacitors, respectively. On the bus side of the board, the C5 and C8 capacitors should be 100 nF and 10 µF ceramic capacitors, respectively, and the C7 and C9 capacitors should be 100 nF and 10 nF ceramic capacitors, respectively. BOARD INTERNAL LAYER THICKNESS The ADM2582E/ADM2587E evaluation board consists of six layers with four internal layers. The spacing between the internal board layers was chosen as specified in Table 3 to maximize the stitching capacitance on the board. Table 3. Spacing Between Layers of the Evaluation Board Layers 1 to 2 2 to 3 3 to 4 4 to 5 5 to 6 Rev. B | Page 5 of 12 Space Between Layers (mm) 0.1016 0.2032 0.2032 0.2032 0.1016 UG-044 Evaluation Board User Guide EVALUATION BOARD SCHEMATICS GND1 GND2 VCC VISOIN GND1 A RxD B GND2 RE DE Z TxD GND2 VCC Y GND1 VISOOUT GND1 GND2 08420-002 Figure 3. Schematics of the ADM2582E/ADM2587E Evaluation Board Rev. B | Page 6 of 12 Evaluation Board User Guide UG-044 08420-003 ASSEMBLY DRAWINGS AND BOARD LAYOUT 08420-004 Figure 4. Top Layer 08420-005 Figure 5. Silkscreen Figure 6. Internal Layer 2 Rev. B | Page 7 of 12 Evaluation Board User Guide 08420-006 UG-044 08420-007 Figure 7. Internal Layer 3 08420-008 Figure 8. Internal Layer 4 Figure 9. Internal Layer 5 Rev. B | Page 8 of 12 UG-044 08420-009 Evaluation Board User Guide Figure 10. Bottom Solder Layer Rev. B | Page 9 of 12 UG-044 Evaluation Board User Guide ORDERING INFORMATION BILL OF MATERIALS Table 4. Quantity 4 1 1 1 4 2 1 2 1 2 1 1 2 Reference Designator R1, R2, R3, R4 R6 RT RT1 C1, C5, C6, C7 C2, C8 C3 C4, C9 J1 J2, J3 J4 J8 LK1, LK4 Description Resistor, size 0805 (not inserted) Resistor, 0 Ω, size 0805 Resistor, 120 Ω, size 0805 Resistor, size 0805 (not inserted) Capacitor, size 0805, 100 nF Capacitor, size 0805, 10 µF Capacitor, tantalum, Case C, 22 µF Capacitor, size 0805, 10 nF CON\POWER2, 2-pin terminal block (5 mm pitch) PCB SMB jack (square) CON\POWER6, 6-pin terminal block CON\POWER4, 4-pin terminal block 4-pin (2 × 2), 2.54 mm header and shorting block Supplier Not inserted Vishay Draloric Multicomp Not inserted Multicomp AVX AVX AVX Camden Electronics Multicomp Camden Electronics Camden Electronics Harwin 2 LK2, LK3 6-pin (3 × 2), 2.54 mm header and shorting block Harwin 3 LK5, LK6, LK14 2-pin (1 × 2), 2.54 mm header and shorting block Harwin 1 U1 20-lead, wide-body SOIC Analog Devices, Inc. 2 2 8 GND1, GND2 VCC, VISO RXD, RE, DE, TXD, A, B, Y, Z Test point, black Test point, red Test point, yellow Vero Technologies Vero Technologies Vero Technologies RELATED LINKS Resource ADM2582E ADM2587E AN-960 AN-0971 Description 16 Mbps, 2.5 kV rms Signal and Power Isolated RS-485 Transceiver with ±15 kV ESD Protection 500 kbps, 2.5 kV rms Signal and Power Isolated RS-485 Transceiver with ±15 kV ESD Protection RS-485/RS-422 Circuit Implementation Guide Recommendations for Control of Radiated Emissions with isoPower Devices Rev. B | Page 10 of 12 Part No. Not inserted CRCW08050000Z0EA MC 0.1W 0805 1% Not inserted MCCA000274 0805ZD106KAT2A TAJC226K016RNJ 08053C103KAT2A CTB5000/2 24-14-2-TGG CTB5000/6 CTB5000/4 M20-9953646 and M7566-05 M20-9953646 and M7566-05 M20-9953646 and M7566-05 ADM2582EBRWZ or ADM2587EBRWZ 20-2137 20-313137 20-313140 Evaluation Board User Guide UG-044 NOTES Rev. B | Page 11 of 12 UG-044 Evaluation Board User Guide NOTES 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. 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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. ©2009–2012 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. UG08420-0-5/12(B) Rev. B | Page 12 of 12