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Evaluation Board User Guide UG-382 Evaluation Board for FSK AD5700/AD5700-1 HART Modem PLEASE SEE THE LAST PAGE FOR AN IMPORTANT WARNING AND LEGAL TERMS AND CONDITIONS. Rev. A | Page 1 of 8
FEATURES
Convenient connections for power through screw Terminal block Use of on-chip RC oscillator or an external crystal Various link options EQUIPMENT NEEDED Host controller with UART interface GENERAL DESCRIPTION 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. 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. EVALUATION BOARD Figure 1. 10565-001
UG-382 Evaluation Board User Guide Rev. A | Page 2 of 8 TABLE OF CONTENTS
REVISION HISTORY
5/13—Rev. 0 to Rev. A 2/12—Revision 0: Initial Version
also provides power to IOVCC. oscillator, and the internal receive filter (see Table 1). Table 1. Default Link Options Table 2. Link Functions FILTER_SEL, L1, L2 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. REF_EN 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. DUPLEX 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). AD5700/AD5700-1 enabled at the same time. L5 Allows VCC to be connected directly to IOVCC. Inserted—VCC is connected to IOVCC. Not inserted—VCC is disconnected from IOVCC. L8 This link must be inserted.
Figure 2. Schematic of Controller Circuitry
Figure 5. Solder Side PCB Drawing
Evaluation Board User Guide UG-382 Rev. A | Page 7 of 8
ORDERING INFORMATION
Table 3. Quantity Reference Designator Description Part Number Supplier/Number
1 U2 HART modem AD5700-1BCPZ Analog Devices
2 C1, C2 36 pF, C0G capacitor (0603) C0603C360J5GACTU FEC 1865478
2 C3, C4 1 µF, X7R capacitor (0603) C0603C105K4RACTU FEC 1828826
2 C5, C10 100 nF, X7R capacitor (0603) MCCA000159 FEC 1759016
1 C6 300 pF, C0G capacitor (0603) GRM1885C1H301JA01D Digi-Key 490-1438-1-ND
1 C7 150 pF, C0G capacitor (0603) 06031A151JAT2A FEC 1740606
1 C8 680 pF, C0G capacitor (0603) MCCA000221 FEC 1759084
1 C12 22 nF, X7R capacitor (0603) 06035C223KAT2A FEC 1658869
1 C14 2.2 µF, X7R capacitor (0603) GRM188R71A225KE15D FEC 1797012 1 C17 2.2 nF, C0G capacitor (0603) C0603C222J5GACTU FEC 1535565
1 C19 10 µF, tantalum capacitor (Case A) TCJA106M010R0300 FEC 1135234
10 CLK_CFG0, CLK_CFG1, DUPLEX,
FILTER_SEL, REF_EN, XTAL_EN, J2, J3, L1, L2 Headers M20-9990345 FEC 1022248
1 J1 2-pin terminal block CTB5000/2 FEC 151789
3 L5, L6, L8 2-pin (0.1" pitch) header and shorting shunt M20-9990246 FEC 1022247 1 R1 1 MΩ (0603) MC 0.063W 0603 5% 1M FEC 9331727 2 R2, R3 1.2 MΩ (0603) RC0603FR-071M2L FEC 9238859 1 R4 150 kΩ (0603) MC 0.063W 0603 1% 150K FEC 9330623
1 R6 0 Ω (0603) CRCW06030000Z0EA FEC 1469739
13 TP1 to TP13 Test point 20-313137 FEC 8731144
1 Y1 Quartz crystal SMD ABLS-3.6864MHZ-L4Q-T Digi-Key 535-9893-1-ND
UG-382 Evaluation Board User Guide Rev. A | Page 8 of 8 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 prop erty of their respective owners. UG10565-0-5/13(A)