EVAL-ADM3066EEBZ/EVAL-ADM3066EEB1Z User Guide UG-1131 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 Evaluating the ADM3066E 3.0 V to 5.5 V, 12 kV IEC ESD Protected, 50 Mbps RS-485 Transceiver EVALUATION BOARD PHOTOGRAPHS Easy evaluation of ADM3066E 50 Mbps RS-485 transceiver Board layouts for standard half-duplex RS-485 footprints 10-lead MSOP, ADM3066EBRMZ (EVAL-ADM3066EEBZ) 10-lead LFCSP, ADM3066EBCPZ (EVAL-ADM3066EEB1Z) Power/ground connections through screw terminal block 3.0 V to 5.5 V operating voltage range on VCC 1.62 V to 5.5 V VIO logic supply IEC ESD protection on the RS-485 A and B bus pins 12 kV contact discharge and 12 kV air gap discharge Screw terminal blocks for logic input/output and RS-485 signals Jumper-selectable enable/disable for RE and DE Test points for measuring all signals Resistors and footprints for termination and biasing networks 15761-001 FEATURES Figure 1. EVAL-ADM3066EEBZ Evaluation Board EVALUATION KIT CONTENTS EVAL-ADM3066EEBZ or EVAL-ADM3066EEB1Z ADDITIONAL EQUIPMENT NEEDED Oscilloscope Signal generator or universal asynchronous receiver/transmitter (UART) 3 V to 5 V supply The EVAL-ADM3066EEBZ and EVAL-ADM3066EEB1Z allow quick and easy evaluation of the ADM3066E 50 Mbps RS-485 transceiver with standard MSOP and LFCSP footprints, respectively. The evaluation boards allow the input and output functions to be exercised without external components. Screw terminal blocks provide convenient connections for power and ground, digital input and output, and RS-485 signals. The evaluation boards can be powered by a standard configurable bench power supply within a 3.0 V to 5.5 V range. The EVAL-ADM3066EEBZ evaluation board has a footprint for the ADM3066EBRMZ half-duplex RS-485 transceiver in a 10-lead MSOP package. The EVAL-ADM3066EEB1Z evaluation board has a footprint for a half-duplex RS-485 transceiver in a 10-lead LFCSP package. Complete specifications for the ADM3066E are provided in the ADM3066E data sheet and must be consulted in conjunction with this user guide when using the evaluation board. PLEASE SEE THE LAST PAGE FOR AN IMPORTANT WARNING AND LEGAL TERMS AND CONDITIONS. Rev. 0 | Page 1 of 9 15761-002 GENERAL DESCRIPTION Figure 2. EVAL-ADM3066EEB1Z Evaluation Board UG-1131 EVAL-ADM3066EEBZ/EVAL-ADM3066EEB1Z User Guide TABLE OF CONTENTS Features .............................................................................................. 1 Other Board Components............................................................3 Evaluation Kit Contents ................................................................... 1 Half-Duplex RS-485 Transceivers Point to Point Test..............4 Additional Equipment Needed ....................................................... 1 General Description ......................................................................... 1 IEC 61000-4-2 ESD Protection to 12 kV (Contact) and 12 kV (Air Gap) ..........................................................................4 Evaluation Board Photographs ....................................................... 1 Evaluation Board Schematics and Artwork ...................................5 Revision History ............................................................................... 2 Ordering Information .......................................................................8 Evaluation Board Hardware ............................................................ 3 Bill of Materials ..............................................................................8 Setting Up the Evaluation Board ................................................ 3 Related Links ..................................................................................9 Input and Output Connections .................................................. 3 REVISION HISTORY 5/2017--Revision 0: Initial Version Rev. 0 | Page 2 of 9 EVAL-ADM3066EEBZ/EVAL-ADM3066EEB1Z User Guide UG-1131 EVALUATION BOARD HARDWARE SETTING UP THE EVALUATION BOARD The EVAL-ADM3066EEBZ and EVAL-ADM3066EEB1Z evaluation boards are powered by connecting a 3.0 V or 5.5 V power supply to the J1 screw terminals for VCC and GND at the top of the evaluation board. A 10 F decoupling capacitor, C3, is fitted at the connector between VCC and GND. The VCC pin of the RS-485 transceiver is fitted with a 100 nF decoupling capacitor, C1, with a second footprint for an optional additional capacitor, C2. VIO can be connected with VCC or a separate 1.8 V power supply. Corresponding labeled test points allow monitoring of the power supply to the evaluation board and the probe reference to ground. INPUT AND OUTPUT CONNECTIONS Digital input and output signals are connected via the J3 screw terminal block, allowing wire connections from the evaluation boards to a signal generator or UART. The EVAL-ADM3066EEBZ and EVAL-ADM3066EEB1Z include connections for data input (DI), receiver output (RO), receiver enable (RE), and driver enable (DE). Alternatively, jumper connections can drive these inputs and/or connect them to VCC and GND (see Table 1). The EVAL-ADM3066EEBZ and EVAL-ADM3066EEB1Z evaluation boards also have an SMA right angle jack (DI), which is the preferred option for delivering a high speed 50 Mbps signal to the evaluation boards. Connections to an RS-485 bus are made via a screw terminal block, J5. For the EVAL-ADM3066EEBZ or EVAL-ADM3066EEB1Z half-duplex boards, there are two bus input/output signals, A and B, for noninverting and inverting signals, respectively. The bus cable can also include a common ground connection or shield and can also be connected to the J5 screw terminal block of the evaluation boards. Test points are available on the evaluation boards and are appropriately labeled for all digital and bus input/output signals. OTHER BOARD COMPONENTS The EVAL-ADM3066EEBZ and EVAL-ADM3066EEB1Z evaluation boards include footprints for termination resistors, RT1 and RT2, as well as pull-up and pull-down resistors, R1 and R2. Termination resistors of 120 are fitted to the evaluation board; these resistors can be removed or replaced with a different value resistor as needed. Inserting both LK3 and LK4 adds a 60 load to the RS-485 driver. Biasing Resistors for Bus Idle Fail-Safe Although the ADM3066E has a built-in receiver fail-safe for the bus idle condition, there are footprints on the evaluation boards for fitting the R2 pull-up resistor to VCC on A, as well as the R1 pull-down resistor to GND on B. These resistors can be fitted if the user is connecting to other devices 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 for 3.3 V and 1440 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. Table 1. Jumper Configurations Link LK1 Connection A B C D LK2 A B C Inserted Not inserted Inserted Not inserted Inserted Not inserted LK3 LK4 LK6 Description Connects the receiver enable (RE) input of the ADM3066E to VCC. This setting disables the receiver. Connects the RE input of the ADM3066E to GND. This setting enables the receiver. Connects the RE input of the ADM3066E to the J3-2 terminal block connector. Connects the RE input of the ADM3066E to the J3-3 terminal block connector; that is, the input for both RE and DE is set by LK1. This setting ensures that when the driver is enabled, the receiver is disabled, or when the driver is disabled, the receiver is enabled. Connects the DE input of the ADM3066E to VCC. This setting enables the driver. Connects the DE input of the ADM3066E to GND. This setting disables the driver. Connects the DE input of the ADM3066E to the J3-2 terminal block connector. Connects the 120 RT1 termination resistor across the RS-485 A and B pins. Disconnects the 120 RT1 termination resistor across the RS-485 A and B pins. Connects the 120 RT2 termination resistor across the RS-485 A and B pins. Disconnects the 120 RT2 termination resistor across the RS-485 A and B pins. Connects VCC with VIO. Disconnects VCC with VIO. Rev. 0 | Page 3 of 9 EVAL-ADM3066EEBZ/EVAL-ADM3066EEB1Z User Guide During testing, the EVAL-ADM3066EEBZ and EVALADM3066EEB1Z A and B pins are subjected to at least 10 positive and 10 negative single discharges with a 1 sec interval between each pulse. The highest specified IEC 61000-4-2 ESD test is Level 4, which defines a contact discharge voltage of 8 kV and an air discharge voltage of 15 kV. HALF-DUPLEX RS-485 TRANSCEIVERS POINT TO POINT TEST A point to point test can be set up with either two EVALADM3066EEBZ evaluation boards or two EVAL-ADM3066EEB1Z evaluation boards. Figure 4 shows two half-duplex evaluation boards in this configuration. Note the positions of LK1 and LK2 on each evaluation board that enable the driver on one evaluation board and the receiver on the other evaluation board. Remove LK4 from the EVAL-ADM3066EEBZ or EVAL-ADM3066EEB1Z evaluation board to ensure both ends of the bus have only a 120 load. Differential signals on the bus are monitored with an oscilloscope, as well as the DI pin and RO pin of the ADM3066E Figure 3 shows the 8 kV contact discharge current waveform as described in the ADM3066E data sheet. Some key IEC 61000-4-2 waveform parameters are rise times of less than 1 ns and pulse widths of approximately 60 ns. IPEAK 30A 90% IEC 61000-4-2 ESD PROTECTION TO 12 kV (CONTACT) AND 12 kV (AIR GAP) The EVAL-ADM3066EEBZ and EVAL-ADM3066EEB1Z evaluation boards are tested to achieve protection against IEC 61000-4-2 ESD to 12 kV (contact), and 12 kV (air gap) on the RS-485 A and B bus pins. I30ns 16A I60ns 8A IEC 61000-4-2 ESD standard describes testing using two coupling methods known as contact discharge and air gap discharge. Contact discharge implies a direct contact between the discharge gun and the equipment under test (EUT). 10% tR = 0.7ns TO 1ns 30ns t 60ns Figure 3. IEC 61000-4-2 ESD Waveform (8 kV) During air discharge testing, the charged electrode of the discharge gun is moved toward the EUT until a discharge occurs as an arc across the air gap. The discharge gun does not make direct contact with the EUT. SIGNAL GENERATOR 3.3V OR 5V SUPPLY RO VIO LK2 A B C D A B C RE DE DI DI 3.3V OR 5V SUPPLY A B C D A B C RE DE DI DI LK1 B DE DI J5 B A A GND GND OSCILLOSCOPE RO VCC LK6 RE B DE DI A J5 B A GND GND 15761-004 VIO LK2 LK4 LK3 RO RE EVAL-ADM3066EEBZ J1 J3 LK1 RO VCC LK6 LK4 LK3 EVAL-ADM3066EEBZ J1 J3 Figure 4. Half-Duplex RS-485 Two Board Point to Point Test Rev. 0 | Page 4 of 9 15761-003 UG-1131 EVAL-ADM3066EEBZ/EVAL-ADM3066EEB1Z User Guide UG-1131 15761-005 EVALUATION BOARD SCHEMATICS AND ARTWORK Figure 5. EVAL-ADM3066EEBZ Schematic Rev. 0 | Page 5 of 9 EVAL-ADM3066EEBZ/EVAL-ADM3066EEB1Z User Guide 15761-006 UG-1131 Figure 6. EVAL-ADM3066EEB1Z Schematic Rev. 0 | Page 6 of 9 UG-1131 15761-007 EVAL-ADM3066EEBZ/EVAL-ADM3066EEB1Z User Guide 15761-008 Figure 7. EVAL-ADM3066EEBZ/EVAL-ADM3066EEB1Z Silkscreen 15761-009 Figure 8. EVAL-ADM3066EEBZ/EVAL-ADM3066EEB1Z Component Side/Layer 1 15761-010 Figure 9. EVAL-ADM3066EEBZ/EVAL-ADM3066EEB1Z Layer 2 15761-011 Figure 10. EVAL-ADM3066EEBZ/EVAL-ADM3066EEB1Z Layer 3 Figure 11. EVAL-ADM3066EEBZ/EVAL-ADM3066EEB1Z Layer 4 Rev. 0 | Page 7 of 9 UG-1131 EVAL-ADM3066EEBZ/EVAL-ADM3066EEB1Z User Guide ORDERING INFORMATION BILL OF MATERIALS Table 2. EVAL-ADM3066EEBZ Qty 2 3 2 8 2 1 1 1 2 1 Reference Designator C1, C6 C2, C4, C5 C3, C7 A, B, DI, RO, A_GND, B_GND, DI_GND, RO_GND DE, RE GND DI_ J1 J3, J5 LK1 1 LK2 3 2 1 2 1 2 LK3, LK4, LK6 R1, R2 R3 RT1, RT2 U1 VCC, VIO Description Capacitor, 100 nF, 0805 Capacitor, not placed/optional Capacitor, 10 F, Case B High speed test point, silver pin Supplier Multicomp Not applicable Kemet Not applicable Part Number MCCA000274 Not applicable B45196H3106K209 040/30P/LA/KP2 SILVER Test point, yellow Test point, black SMA right angle jack Two-way terminal block Four-way terminal block 8-pin (4 x 2), 0.1" header and shorting block 6-pin (3 x 2), 0.1" header and shorting block Jumper block, 2-pin, 0.1" spacing Resistor, not placed/optional Resistor, 0 , 0805 Resistor, 120 , 0805 10-lead MSOP Test point, red Vero Technologies Vero Technologies Not applicable Lumberg Lumberg Harwin 20-313140 20-2137 5-1814400-1 KRM 02 KRM 04 M20-9953646 and M7566-05 Harwin M20-9953646 and M7566-05 Harwin M20-9990246 and M7566-05 Not applicable CRCW08050000Z0EA MC 0.1W 0805 1% 120R ADM3066EBRMZ 20-313137 Vishay Draloric Multicomp Analog Devices, Inc. Vero Technologies Table 3. EVAL-ADM3066EEB1Z Qty 2 3 2 8 2 1 1 1 2 1 Reference Designator C1, C6 C2, C4, C5 C3, C7 A, B, DI, RO, A_GND, B_GND, DI_GND, RO_GND DE, RE GND DI_ J1 J3, J5 LK1 1 LK2 3 2 1 2 1 2 LK3, LK4, LK6 R1, R2 R3 RT1, RT2 U1 VCC, VIO Description Capacitor, 100 nF, 0805 Capacitor, not placed/optional Capacitor, 10 F, Case B High speed test point, silver pin Supplier Multicomp Not applicable Kemet Not applicable Part Number MCCA000274 Not applicable B45196H3106K209 040/30P/LA/KP2 SILVER Test point, yellow Test point, black SMA right angle jack Two-way terminal block Four-way terminal block 8-pin (4 x 2), 0.1" header and shorting block 6-pin (3 x 2), 0.1" header and shorting block Jumper block, 2-pin, 0.1" spacing Resistor, not placed/optional Resistor, 0 , 0805 Resistor, 120 , 0805 10-lead LFCSP Test point, red Vero Technologies Vero Technologies Not applicable Lumberg Lumberg Harwin 20-313140 20-2137 5-1814400-1 KRM 02 KRM 04 M20-9953646 and M7566-05 Harwin M20-9953646 and M7566-05 Harwin M20-9990246 and M7566-05 Not applicable CRCW08050000Z0EA MC 0.1W 0805 1% 120R ADM3066EBCPZ 20-313137 Vishay Draloric Multicomp Analog Devices, Inc. Vero Technologies Rev. 0 | Page 8 of 9 EVAL-ADM3066EEBZ/EVAL-ADM3066EEB1Z User Guide UG-1131 RELATED LINKS Resource ADM3066E AN-960 Interface RS-485 and RS-422 Description 3.0 V to 5.5 V, 12 kV IEC ESD Protected, 50 Mbps RS-485 Transceiver RS-485/RS-422 Circuit Implementation Guide 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. 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. (c)2017 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. UG15761-5/17(0) Rev. 0 | Page 9 of 9