Evaluation Board User Guide UG-382 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 FSK AD5700/AD5700-1 HART Modem FEATURES GENERAL DESCRIPTION Convenient connections for power through screw Terminal block Use of on-chip RC oscillator or an external crystal Various link options This user guide describes the evaluation board for the AD5700/ AD5700-1 Highway Addressable Remote Transducer (HART®) modem. This board can be used to evaluate either the AD5700 or the AD5700-1 part. Both can operate from a single 1.71 V to 5.5 V supply, with the AD5700-1 having the added feature of an integrated oscillator. EQUIPMENT NEEDED Host controller with UART interface Complete specifications for both products can be found in the AD5700/AD5700-1 data sheet available from Analog Devices, Inc., which should be consulted in conjunction with this user guide when using the evaluation board. 10565-001 EVALUATION BOARD Figure 1. PLEASE SEE THE LAST PAGE FOR AN IMPORTANT WARNING AND LEGAL TERMS AND CONDITIONS. Rev. A | Page 1 of 8 UG-382 Evaluation Board User Guide TABLE OF CONTENTS Features .............................................................................................. 1 Power Supplies ...............................................................................3 Equipment Needed ........................................................................... 1 Link Options ..................................................................................3 General Description ......................................................................... 1 Evaluation Board Schematics and Artwork ...................................4 Evaluation Board .............................................................................. 1 Ordering Information .......................................................................7 Revision History ............................................................................... 2 Bill of Materials ..............................................................................7 Evaluation Board Hardware ............................................................ 3 REVISION HISTORY 5/13—Rev. 0 to Rev. A Changed Supply Min from 2 V to 1.71 V ...................................... 1 2/12—Revision 0: Initial Version Rev. A | Page 2 of 8 Evaluation Board User Guide UG-382 EVALUATION BOARD HARDWARE Table 1. Default Link Options POWER SUPPLIES AGND and DGND are connected together on the board to provide a single GND signal. To power the EVAL-AD5700-1EBZ, supply 3.3 V between the VCC and GND inputs for the analog supply of the AD5700/AD5700-1. With L5 inserted (default), this also provides power to IOVCC. LINK OPTIONS A number of links on the evaluation board must be set for the required operating setup before using the board. The functions of these link options are described in detail in Table 2. The default setup is using the on-chip reference, the crystal oscillator, and the internal receive filter (see Table 1). Link No. CLK_CFG1 CLK_CFG0 XTAL_EN FILTER_SEL L1 L2 REF_EN DUPLEX L5 L6 L8 Option A A A B A A B A Inserted Not inserted Inserted Table 2. Link Functions Link No. CLK_CFG1, CLK_CFG0, XTAL_EN FILTER_SEL, L1, L2 REF_EN DUPLEX L5 L6 L8 Function The AD5700/AD5700-1 support numerous clocking configurations to allow a simple, low cost solution. The AD5700/AD5700-1 can use an external crystal or ceramic resonator, a CMOS input, or an internal RC oscillator (AD5700-1 only). The CLK_CFG0, CLK_CFG1, and XTAL_EN links configure the clock generation as follows: XTAL_EN CLK_CFG1 CLK_CFG0 CLKOUT Description B A A No output 3.6864 MHz CMOS clock connected at XTAL1 pin B A B No output 1.2288 MHz CMOS clock connected at XTAL1 pin B B A No output Internal oscillator enabled B B B 1.2288 MHz output Internal oscillator enabled, CLKOUT enabled A A A No output Crystal oscillator enabled A A B 3.6864 MHz output Crystal oscillator enabled, CLKOUT enabled A B A 1.8432 MHz output Crystal oscillator enabled, CLKOUT enabled A B B 1.2288 MHz output Crystal oscillator enabled, CLKOUT enabled These link options set whether the internal or external receive band-pass filter is used at the HART input. Setting FILTER_SEL to Position B and L1 and L2 to Position A sets the board to use the internal receive band-pass filter. Setting FILTER_SEL to Position A and L1 and L2 to Position B sets the board to use the external receive band-pass filter. This sets whether the internal or an external reference is used. Position A—disables the internal reference, and a buffered external 2.5 V reference source must be applied at REF. Position B—enables the internal 1.5 V reference and buffer. Allows the modulator and demodulator of the AD5700/AD5700-1 to be enabled at the same time. Position A—the AD5700/AD5700-1 operate in half-duplex operation (controlled by RTS). Position B—the AD5700/AD5700-1 operate in full duplex operation, with the modulator and demodulator of the AD5700/AD5700-1 enabled at the same time. Allows VCC to be connected directly to IOVCC. Inserted—VCC is connected to IOVCC. Not inserted—VCC is disconnected from IOVCC. Do not insert this link. This link must be inserted. Rev. A | Page 3 of 8 UG-382 Evaluation Board User Guide EVALUATION BOARD SCHEMATIC AND ARTWORK 10565-002 Figure 2. Schematic of Controller Circuitry Rev. A | Page 4 of 8 UG-382 10565-003 Evaluation Board User Guide 10565-004 Figure 3. Component Placement Drawing Figure 4. Component Side PCB Drawing Rev. A | Page 5 of 8 Evaluation Board User Guide 10565-005 UG-382 Figure 5. Solder Side PCB Drawing Rev. A | Page 6 of 8 Evaluation Board User Guide UG-382 ORDERING INFORMATION BILL OF MATERIALS Table 3. Quantity 1 2 2 2 1 1 1 1 1 1 1 10 1 3 Reference Designator U2 C1, C2 C3, C4 C5, C10 C6 C7 C8 C12 C14 C17 C19 CLK_CFG0, CLK_CFG1, DUPLEX, FILTER_SEL, REF_EN, XTAL_EN, J2, J3, L1, L2 J1 L5, L6, L8 1 2 1 1 13 1 R1 R2, R3 R4 R6 TP1 to TP13 Y1 Description HART modem 36 pF, C0G capacitor (0603) 1 µF, X7R capacitor (0603) 100 nF, X7R capacitor (0603) 300 pF, C0G capacitor (0603) 150 pF, C0G capacitor (0603) 680 pF, C0G capacitor (0603) 22 nF, X7R capacitor (0603) 2.2 µF, X7R capacitor (0603) 2.2 nF, C0G capacitor (0603) 10 µF, tantalum capacitor (Case A) Headers Part Number AD5700-1BCPZ C0603C360J5GACTU C0603C105K4RACTU MCCA000159 GRM1885C1H301JA01D 06031A151JAT2A MCCA000221 06035C223KAT2A GRM188R71A225KE15D C0603C222J5GACTU TCJA106M010R0300 M20-9990345 Supplier/Number Analog Devices FEC 1865478 FEC 1828826 FEC 1759016 Digi-Key 490-1438-1-ND FEC 1740606 FEC 1759084 FEC 1658869 FEC 1797012 FEC 1535565 FEC 1135234 FEC 1022248 2-pin terminal block 2-pin (0.1" pitch) header and shorting shunt 1 MΩ (0603) 1.2 MΩ (0603) 150 kΩ (0603) 0 Ω (0603) Test point Quartz crystal SMD CTB5000/2 M20-9990246 FEC 151789 FEC 1022247 MC 0.063W 0603 5% 1M RC0603FR-071M2L MC 0.063W 0603 1% 150K CRCW06030000Z0EA 20-313137 ABLS-3.6864MHZ-L4Q-T FEC 9331727 FEC 9238859 FEC 9330623 FEC 1469739 FEC 8731144 Digi-Key 535-9893-1-ND Rev. A | Page 7 of 8 UG-382 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. 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. ©2012–2013 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. UG10565-0-5/13(A) Rev. A | Page 8 of 8