Evaluation Board User Guide UG-127 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 High Speed Op Amps Offered in 5-Lead SOT-23 and 6-Lead SOT-23 Packages The ground plane, component placement, and supply bypassing FEATURES are laid out to minimize parasitic inductances and capacitances. Enables quick breadboarding/prototyping The evaluation board components are primarily SMT 1206 case User-defined circuit configuration size, with the exception of the electrolytic bypass capacitors (C1, Edge-mounted SMA connector provisions C4), which are 3528 case size. Easy connection to test equipment and other circuits RoHs compliant There are two options for supply bypassing. The first is connecting additional shunt capacitors (C2, C5) in parallel with the electrolytic GENERAL DESCRIPTION capacitors (C1, C4) from each supply to ground. This technique The Analog Devices, Inc., 5-lead and 6-lead, SOT-23 high speed of power supply bypassing provides wideband rejection of evaluation board is designed to help customers quickly prototype unwanted noise on the supply lines. new op amp circuits and reduce design time. The evaluation The second approach to supply bypassing is to connect one board can be used with almost any Analog Devices op amp in capacitor (C6) between the supply rails. This method uses fewer various configurations and applications. The evaluation board components and can improve the PSRR at higher frequencies. is a bare board (that is, there are no components or amplifiers Optimal bypassing is circuit dependent and therefore must be soldered to the board, these must be ordered separately). evaluated by the designer. Figure 1 shows the component side of the evaluation board, Figure 3 shows the evaluation board schematic. Figure 4 and and Figure 2 shows the circuit side of the evaluation board. Figure 6 show the evaluation board assembly drawings. The The evaluation board is a 2-layer PCB that accepts SMA con- PCB layout pattern for the component side and the circuit side nectors on the input and output for efficient connection to test is shown in Figure 5 and Figure 7. equipment. The evaluation board can also accommodate an SMA connector for the disable pin. EVALUATION BOARD, COMPONENT AND CIRCUIT SIDES NOTES NOTES 1. THE EVALUATION BOARD SILKSCREEN PART NUMBER 1. THE EVALUATION BOARD SILKSCREEN PART NUMBER LABELING ON YOUR BOARD MAY BE DIFFERENT FROM LABELING ON YOUR BOARD MAY BE DIFFERENT FROM WHAT IS SHOWN HERE. WHAT IS SHOWN HERE. Figure 1. Component Side of Evaluation Board Figure 2. Circuit Side of Evaluation Board PLEASE SEE THE LAST PAGE FOR AN IMPORTANT WARNING AND LEGAL TERMS AND CONDITIONS. Rev. A Page 1 of 8 08981-001 08981-002UG-127 Evaluation Board User Guide TABLE OF CONTENTS Features .............................................................................................. 1 Evaluation Board Schematic ............................................................3 General Description ......................................................................... 1 Evaluation Board Assembly Drawings and Layout Patterns .......4 Evaluation Board, Component and Circuit Sides ........................ 1 Ordering Information .......................................................................5 Revision History ............................................................................... 2 Bill of Materials ..............................................................................5 REVISION HISTORY 5/11Rev. 0 to Rev. A Changes to User Guide Title, General Description Section, Figure 1 Caption, and Figure 2 Caption ........................................ 1 Changed Evaluation Board Schematic and Layout Section to Evaluation Board Schematic Section ............................................. 3 Changes to Figure 3 Caption ........................................................... 3 Added Evaluation Board Assembly Drawings and Layout Patterns Section ................................................................................ 4 Changes to Figure 4 through Figure 7 ........................................... 4 4/10Revision 0: Initial Version Rev. A Page 2 of 8