AD8129AR-EBZ

Evaluation Board User Guide UG-133 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 Differential Receiver Evaluation Boards for Amplifiers Offered in 8-Lead SOIC and MSOP Packages INTRODUCTION The Analog Devices, Inc., differential receiver evaluation boards (for the MSOP and SOIC) make it easy for designers to quickly assess the performance of a particular differential receiver application circuit. The evaluation board is a bare board (that is, there are no components soldered to the board) that is very flexible and allows for several feedback configurations, commonmode and differential input terminations, reference voltage applications, and other circuit features. Most resistors and capacitors on the board are in 1206 packages. DEVICES COVERED The boards are used for the AD8129 and AD8130. POWER SUPPLIES Power is applied to the boards through J1, a Molex 0022112032 3-pin header. Pin 1 (square footprint) is for the positive supply, Pin 3 is for the negative supply, and Pin 2 is connected to the ground plane of the board. Alternatively, looped test points can be used: TP6 connects to the positive supply, TP7 connects to the negative supply, and TP8, TP9, TP10, and TP11 connect to the ground plane (see Figure 1). The board can accommodate single and dual supplies. For single-supply operation, connect the negative supply to the ground plane. It is very important that the power supply pins of the device under test (DUT) have decoupling circuitry. The board layout facilitates such decoupling by including footprints for a 1206 ceramic capacitor on each supply. For broadband decoupling, it is recommended that two ceramic capacitors be used: one for lower frequencies and one for higher frequencies. To use two capacitors on each supply, stack two 1206 ceramic capacitors on the same footprint. Bulk decoupling is provided by C1 and C3; 10 µF tantalum capacitors are recommended. FEEDBACK NETWORKS AND INPUT/OUTPUT TERMINATIONS Figure 1 shows the schematic for the evaluation boards. R5 and R6 compose the resistive feedback loop that can be returned to ground through R8 or to the reference voltage circuitry, VR1 and C7. Capacitor C5 and Capacitor C6 are included across the feedback resistor and gain resistor, respectively, to implement first-order frequency response shaping. C6 introduces a pole into the feedback loop, which must be compensated for by C5. PLEASE SEE THE LAST PAGE FOR AN IMPORTANT WARNING AND LEGAL TERMS AND CONDITIONS. A reference voltage can be injected at Pin 4 of the DUT. Using Potentiometer VR1, which spans the power supplies, the designer can adjust the reference voltage over a wide range. C7 provides bypassing on the wiper of VR1. A test point, TP5, is provided for monitoring the reference voltage. When VR1 is used, it is important to ensure that JU3 is shorted. To minimize parasitic summing node capacitance, the ground plane has been voided under and around Pin 5 of the DUT and the copper that connects to it. Differential termination is provided by R3, and commonmode terminations are provided by R1 and R2. C9 and C10 allow optional input ac coupling and must be shorted across when not used. JU1 provides the means to directly monitor the differential input by using a suitable high impedance differential probe, or to directly short across the differential inputs for test purposes. Standard 0.100-inch pitch headers can be used in JU1. Alternatively, TP2 and TP3, which accommodate looped-type test points, can be used. A source termination resistor, R7, is included on the output to facilitate driving coaxial cables and test equipment. The output signal can be monitored before the source termination resistor at TP4. Because TP4 is the direct amplifier output, any test equipment connected to TP4 adds to the capacitive load of the amplifier, thus diminishing the phase margin. Extreme care should be exercised when connecting test equipment to TP4. INPUT/OUTPUT CONNECTORS The inputs and outputs have edge-mounted Subminiature A (SMA) connectors for straightforward connection to coaxial cables. Johnson Components Part Number 142-0701-801, or the equivalent, is recommended. On the inputs, TP13 and TP14 provide the option of using straight or right-angle through-hole SMA connectors. POWER-DOWN Pull-up Resistor R4 and Jumper JU2 make it easy for the powerdown feature of the DUT to be asserted. The recommended value for R4 is 1 kΩ. As with JU1, a 0.100-inch pitch header can be used for JU2. OTHER COMPONENTS There may be application circuits where footprints for desired components are not available on the board. In these cases, the user is encouraged to use his or her ingenuity to find ways to include them. Rev. B | Page 1 of 8 UG-133 Evaluation Board User Guide TABLE OF CONTENTS Introduction ...................................................................................... 1 Revision History ................................................................................2 Devices Covered ............................................................................... 1 Evaluation Board Schematic and Artwork.....................................3 Power Supplies .................................................................................. 1 SOIC Evaluation Boards (R) ........................................................4 Feedback Networks and Input/Output Terminations ................. 1 MSOP Evaluation Boards (RM) ..................................................5 Input/Output Connectors................................................................ 1 Ordering Information .......................................................................6 Power-Down...................................................................................... 1 Bill of Materials ..............................................................................6 Other Components........................................................................... 1 Related Links ..................................................................................6 REVISION HISTORY 9/12—Rev. 0 to Rev. A Changes to Introduction Section.................................................... 1 Changes to Figure 2 to Figure 7 ...................................................... 4 Changes to Figure 9 .......................................................................... 5 4/10—Revision 0: Initial Version Rev. B | Page 2 of 8 Evaluation Board User Guide UG-133 EVALUATION BOARD SCHEMATIC AND ARTWORK V+ C1 10µF 16V TP2 –IN TP13 J2 C2 0.1µF 7 C9* TP4 OUT +VS 3 J5 8 –IN R1* 2 1 R3* JU1 1 +IN R2* J3 3 V+ C10* R4 1kΩ TP3 +IN TP14 JU2 TP8 TP9 TP12 R7* OUT 6 R5* C5* R6* C6* J4 FB 5 PD AD8129/ AD8130 REF 4 REF TP5 –VS 2 V– V+ R8* C3 10µF 16V JU3 C4 0.1µF TP10 TP11 CW VR1 1kΩ C7 0.1µF V– V– V+ J1 1 TP7 2 3 08992-013 TP6 *USER-DEFINED VALUE. Figure 1. Differential Receiver Evaluation Board Schematic Rev. B | Page 3 of 8 UG-133 Evaluation Board User Guide NOTES 1. THE EVALUATION BOARD SILKSCREEN PART NUMBER LABELLING ON YOUR BOARD MAY BE DIFFERENT FROM WHAT IS SHOWN HERE. 08992-002 08992-001 SOIC EVALUATION BOARDS (R) NOTES 1. THE EVALUATION BOARD SILKSCREEN PART NUMBER LABELLING ON YOUR BOARD MAY BE DIFFERENT FROM WHAT IS SHOWN HERE. Figure 5. Evaluation Board Photo, Circuit Side 08992-005 08992-006 Figure 2. Evaluation Board Photo, Component Side Figure 6. Assembly Drawing, Circuit Side 08992-003 08992-004 Figure 3. Assembly Drawing, Component Side Figure 7. Board Layout Pattern, Circuit Side Figure 4. Board Layout Pattern, Component Side Rev. B | Page 4 of 8 Evaluation Board User Guide UG-133 NOTES 1. THE EVALUATION BOARD SILKSCREEN PART NUMBER LABELLING ON YOUR BOARD MAY BE DIFFERENT FROM WHAT IS SHOWN HERE. 08992-007 Figure 8. Evaluation Board Photo, Component Side Figure 11. Evaluation Board Photo, Circuit Side 08992-009 08992-010 NOTES 1. THE EVALUATION BOARD SILKSCREEN PART NUMBER LABELLING ON YOUR BOARD MAY BE DIFFERENT FROM WHAT IS SHOWN HERE. 08992-008 MSOP EVALUATION BOARDS (RM) Figure 12. Assembly Drawing, Circuit Side 08992-011 08992-012 Figure 9. Assembly Drawing, Component Side Figure 13. Board Layout Pattern, Circuit Side Figure 10. Board Layout Pattern, Component Side Rev. B | Page 5 of 8 UG-133 Evaluation Board User Guide ORDERING INFORMATION BILL OF MATERIALS Table 1. Quantity 1 2 3 4 2 7 1 1 3 10 3 3 Reference Designator U1 C1, C3 C2, C4, C7 C5, C6, C9, C10 J1, J5 R1, R2, R3, R5, R6, R7, R8 R4 VR1 JU1, JU2, JU3 TP2 to TP11 J2, J3, J4, TP12, TP13, TP14 Description Amplifier 10 µF, capacitor 0.1 µF capacitor User-defined values capacitor 3-pin Molex User-defined values resistor 1 kΩ resistor 1 kΩ resistor Jumper Test point SMA surface-mount technology (SMT) SMA connector RELATED LINKS Resource AD8129 AD8130 Description Product Page, AD8129 Low Cost 200 MHz Differential Receiver Amplifier Product Page, AD8130 Low Cost 270 MHz Differential Receiver Amplifier Rev. B | Page 6 of 8 Package 8-lead SOIC, 8-lead MSOP 7343 (SOIC), 3216 (MSOP) 1206 1206 PWR_CONN_6-9-2 1206 1206 3299W BERG2 TP1 SMASMT SMACON Evaluation Board User Guide UG-133 NOTES Rev. B | Page 7 of 8 UG-133 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. ©2010–2012 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. UG08992-0-9/12(B) Rev. B | Page 8 of 8