MCP6XXX Amplifier Evaluation Board 3 User's Guide (c) 2007 Microchip Technology Inc. DS51673A Note the following details of the code protection feature on Microchip devices: * Microchip products meet the specification contained in their particular Microchip Data Sheet. * Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. * There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip's Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property. * Microchip is willing to work with the customer who is concerned about the integrity of their code. * Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as "unbreakable." Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our products. Attempts to break Microchip's code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act. Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer's risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC, KEELOQ, KEELOQ logo, microID, MPLAB, PIC, PICmicro, PICSTART, PRO MATE, rfPIC and SmartShunt are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. AmpLab, FilterLab, Linear Active Thermistor, Migratable Memory, MXDEV, MXLAB, SEEVAL, SmartSensor and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. Analog-for-the-Digital Age, Application Maestro, CodeGuard, dsPICDEM, dsPICDEM.net, dsPICworks, ECAN, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB, In-Circuit Serial Programming, ICSP, ICEPIC, Mindi, MiWi, MPASM, MPLAB Certified logo, MPLIB, MPLINK, PICkit, PICDEM, PICDEM.net, PICLAB, PICtail, PowerCal, PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Smart Serial, SmartTel, Total Endurance, UNI/O, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. (c) 2007, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received ISO/TS-16949:2002 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona; Gresham, Oregon and design centers in California and India. The Company's quality system processes and procedures are for its PIC(R) MCUs and dsPIC(R) DSCs, KEELOQ(R) code hopping devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip's quality system for the design and manufacture of development systems is ISO 9001:2000 certified. DS51673A-page ii (c) 2007 Microchip Technology Inc. MCP6XXX AMPLIFIER EVALUATION BOARD 3 USER'S GUIDE Table of Contents Preface ........................................................................................................................... 1 Introduction............................................................................................................ 1 Document Layout .................................................................................................. 1 Conventions Used in this Guide ............................................................................ 2 Recommended Reading........................................................................................ 3 The Microchip Web Site ........................................................................................ 3 Customer Support ................................................................................................. 3 Document Revision History ................................................................................... 3 Chapter 1. Product Overview ....................................................................................... 5 1.1 Introduction ..................................................................................................... 5 1.2 MCP6XXX Amplifier Evaluation Board 3 Kit Contents ................................... 5 1.3 Microchip's Web-Based MindiTM Analog Simulator Tool ................................ 6 1.4 MCP6XXX Amplifier Evaluation Board 3 Description ..................................... 6 Chapter 2. Installation and Operation ......................................................................... 7 2.1 Introduction ..................................................................................................... 7 2.2 Required Tools ............................................................................................... 7 2.3 MCP6XXX Amplifier Evaluation Board 3 Set-up ............................................ 7 2.4 MCP6XXX Amplifier Evaluation Board 3 Operation ..................................... 13 Appendix A. Schematic and Layouts ........................................................................ 23 A.1 Introduction .................................................................................................. 23 A.2 Board - Schematic ....................................................................................... 24 A.3 Board - Top Silk Layer .............................................................................. 25 A.4 Board - Top Trace And Silk .......................................................................... 26 A.5 Board - Bottom Layer ................................................................................... 27 Appendix B. Bill of Materials (BOM) .......................................................................... 29 B.1 MCP6XXX Amplifier Evaluation Board 3 BOM ............................................ 29 Worldwide Sales and Service .................................................................................... 32 (c) 2007 Microchip Technology Inc. DS51673A-page iii MCP6XXX Amplifier Evaluation Board 3 User's Guide NOTES: DS51673A-page iv (c) 2007 Microchip Technology Inc. MCP6XXX AMPLIFIER EVALUATION BOARD 3 USER'S GUIDE Preface NOTICE TO CUSTOMERS All documentation becomes dated, and this manual is no exception. Microchip tools and documentation are constantly evolving to meet customer needs, so some actual dialogs and/or tool descriptions may differ from those in this document. Please refer to our web site (www.microchip.com) to obtain the latest documentation available. Documents are identified with a "DS" number. This number is located on the bottom of each page, in front of the page number. The numbering convention for the DS number is "DSXXXXXA", where "XXXXX" is the document number and "A" is the revision level of the document. For the most up-to-date information on development tools, see the MPLAB(R) IDE on-line help. Select the Help menu, and then Topics to open a list of available on-line help files. INTRODUCTION This chapter contains general information that will be useful to know before using the MCP6XXX Amplifier Evaluation Board 3. Items discussed in this chapter include: * * * * * * Document Layout Conventions Used in this Guide Recommended Reading The Microchip Web Site Customer Support Document Revision History DOCUMENT LAYOUT This document describes how to use the MCP6XXX Amplifier Evaluation Board 3. The manual layout is as follows: * Chapter 1. "Product Overview" - Provides the important information about the MCP6XXX Amplifier Evaluation Board 3. * Chapter 2. "Installation and Operation" - Covers the installation and operation of the MCP6XXX Amplifier Evaluation Board 3. It lists the required tools, shows how to set up the board, and demonstrates how to verify the amplifier operation. * Appendix A. "Schematic and Layouts" - Shows the schematic and board layouts for the MCP6XXX Amplifier Evaluation Board 3. * Appendix B. "Bill of Materials (BOM)" - Lists the parts used to build the MCP6XXX Amplifier Evaluation Board 3. (c) 2007 Microchip Technology Inc. DS51673A-page 1 MCP6XXX Amplifier Evaluation Board 3 User's Guide CONVENTIONS USED IN THIS GUIDE This manual uses the following documentation conventions: DOCUMENTATION CONVENTIONS Description Arial font: Italic characters Represents Referenced books Emphasized text A window A dialog A menu selection A field name in a window or dialog A menu path MPLAB(R) IDE User's Guide ...is the only compiler... the Output window the Settings dialog select Enable Programmer "Save project before build" A dialog button A tab A number in verilog format, where N is the total number of digits, R is the radix and n is a digit. A key on the keyboard Click OK Click the Power tab 4`b0010, 2`hF1 Italic Courier New Sample source code Filenames File paths Keywords Command-line options Bit values Constants A variable argument Square brackets [ ] Optional arguments Curly brackets and pipe character: { | } Ellipses... Choice of mutually exclusive arguments; an OR selection Replaces repeated text #define START autoexec.bat c:\mcc18\h _asm, _endasm, static -Opa+, -Opa0, 1 0xFF, `A' file.o, where file can be any valid filename mcc18 [options] file [options] errorlevel {0|1} Initial caps Quotes Underlined, italic text with right angle bracket Bold characters N`Rnnnn Text in angle brackets < > Courier New font: Plain Courier New Represents code supplied by user DS51673A-page 2 Examples File>Save Press <Enter>, <F1> var_name [, var_name...] void main (void) { ... } (c) 2007 Microchip Technology Inc. Preface RECOMMENDED READING This user's guide describes how to use MCP6XXX Amplifier Evaluation Board 3. Other useful documents are listed below. The following Microchip documents are available and recommended as supplemental reference resources. MCP6021/2/3/4 Data Sheet, "Rail-to-Rail Input/Output, 10 MHz Op Amps" (DS21685) This data sheet provides detailed information regarding the MCP602X product family. THE MICROCHIP WEB SITE Microchip provides online support via our web site at www.microchip.com. This web site is used as a means to make files and information easily available to customers. Accessible by using your favorite Internet browser, the web site contains the following information: * Product Support - Data sheets and errata, application notes and sample programs, design resources, user's guides and hardware support documents, latest software releases and archived software * General Technical Support - Frequently Asked Questions (FAQs), technical support requests, online discussion groups, Microchip consultant program member listing * Business of Microchip - Product selector and ordering guides, latest Microchip press releases, listing of seminars and events, listings of Microchip sales offices, distributors and factory representatives CUSTOMER SUPPORT Users of Microchip products can receive assistance through several channels: * * * * * Distributor or Representative Local Sales Office Field Application Engineer (FAE) Technical Support Development Systems Information Line Customers should contact their distributor, representative or field application engineer for support. Local sales offices are also available to help customers. A listing of sales offices and locations is included in the back of this document. Technical support is available through the web site at: http://support.microchip.com DOCUMENT REVISION HISTORY Revision A (July 2007) * Initial Release of this Document. (c) 2007 Microchip Technology Inc. DS51673A-page 3 MCP6XXX Amplifier Evaluation Board 3 User's Guide NOTES: DS51673A-page 4 (c) 2007 Microchip Technology Inc. MCP6XXX AMPLIFIER EVALUATION BOARD 3 USER'S GUIDE Chapter 1. Product Overview 1.1 INTRODUCTION The MCP6XXX Amplifier Evaluation Board 3 is described by the following: * Assembly # : 114-00153 * Order # : MCP6XXXEV-AMP3 * Name: MCP6XXX Amplifier Evaluation Board 3 Items discussed in this chapter include: * Section 1.2 "MCP6XXX Amplifier Evaluation Board 3 Kit Contents" * Section 1.3 "Microchip's Web-Based MindiTM Analog Simulator Tool" * Section 1.4 "MCP6XXX Amplifier Evaluation Board 3 Description" 1.2 MCP6XXX AMPLIFIER EVALUATION BOARD 3 KIT CONTENTS * * * * MCP6XXX Amplifier Evaluation Board 3 - One partially assembled board Important Information "Read First" Accessory Bag - Contains loose parts for populating sockets on board Analog and Interface Products Demonstration Boards CD-ROM (DS21912) - MCP6XXX Amplifier Evaluation Board 3 User's Guide (DS51673) FIGURE 1-1: (c) 2007 Microchip Technology Inc. MCP6XXX Amplifier Evaluation Board 3 Kit. DS51673A-page 5 MCP6XXX Amplifier Evaluation Board 3 User's Guide 1.3 MICROCHIP'S WEB-BASED MINDITM ANALOG SIMULATOR TOOL The MindiTM Analog Simulator tool is an innovative software tool that simplifies analog circuit design. The MindiTM Analog Simulator tool supports the following application circuits: 1) Active Filters, 2) Amplifiers, 3) Battery Chargers, and 4) DC-to-DC Converters. The Amplifier Designer provides full schematic diagrams of the amplifier application circuit with recommended component values and displays the responses in frequency and time domains. The MindiTM Analog Simulator tool is a free web-based design tool available on the Microchip web site at http://www.microchip.com under "Online Simulation Tools" or by going directly to the Mindi web site at http://www.microchip.com/mindi. The circuit simulator within the MindiTM Analog Simulator tool can be downloaded and installed on a personal computer (PC) for more convenient simulations. Modified circuit files can also be downloaded to the PC. 1.4 MCP6XXX AMPLIFIER EVALUATION BOARD 3 DESCRIPTION MCP6XXX Amplifier Evaluation Board 3 is intended to support the difference amplifier circuits which are generated by the MindiTM Amplifier Designer. The MCP6XXX Amplifier Evaluation Board 3 has the following features: * All amplifier resistors and capacitors are socketed * All of the component labels on board keep consistent with those on schematic generated in the MindiTM Amplifier Designer * Supports all Microchip single op amps - PDIP-8 package (e.g., MCP6021) are socketed - SOIC-8 package can be accomodated; see Section 2.4.3 "Amplifier Modifications Using 8-Pin SOIC Op Amps" * Test points for connecting lab equipment * Single supply configuration Figure 1-2 shows the block diagram of the MCP6XXX Amplifier Evaluation Board 3. Lab equipment can be attached (via test points) to measure the amplifier response. Mid-Supply Ref and Test Point Power Supply and Test Point Amplifier Circuit (Op Amp, Resistors Capacitors) Signal Inputs and Test Points Source Configuration FIGURE 1-2: DS51673A-page 6 Signal Output and Test Point MCP6XXX Amplifier Evaluation Board 3 Block Diagram. (c) 2007 Microchip Technology Inc. MCP6XXX AMPLIFIER EVALUATION BOARD 3 USER'S GUIDE Chapter 2. Installation and Operation 2.1 INTRODUCTION This chapter shows how to set up the MCP6XXX Amplifier Evaluation Board 3. Items discussed in this chapter include: * Required Tools * MCP6XXX Amplifier Evaluation Board 3 Set-Up * MCP6XXX Amplifier Evaluation Board 3 Operation 2.2 REQUIRED TOOLS * Lab power supply * Lab signal source (e.g., function generator) * Lab measurement equipment (e.g., oscilloscope) 2.3 MCP6XXX AMPLIFIER EVALUATION BOARD 3 SET-UP The MCP6XXX Amplifier Evaluation Board 3 supports difference amplifier. This section details the conversion of these topologies to the MCP6XXX Amplifier Evaluation Board 3. Figure 2-1 shows the circuit diagram for the board. * GND Mid-supply Reference Block * * Test Points VREF VDD VDD R3 VA 0.1 F R4 * Power Supply * CU1 CP1 1.0 F U1 R1 Source Configuration Block * CL RL GND VL * (c) 2007 Microchip Technology Inc. * FIGURE 2-1: RISO 1 2 3 VB GND R2 * DP1 MCP6XXX Amplifier Evaluation Board 3 Circuit Diagram. DS51673A-page 7 MCP6XXX Amplifier Evaluation Board 3 User's Guide The power supply voltage needs to be in the allowed range for the installed op amps. Any of Microchip's op amps that operate below 5.5V can be used. Moreover, the power supply is protected by a zener diode with nominal voltage 6.2V and bypassed by a 1.0 F capacitor. (See Figure 2-3: "Power Supply Block.") The mid-supply reference consists of a voltage divider and a buffer amplifier. (See Figure 2-4: "Mid-Supply Reference Block.") The resistors that are part of an amplifier are placed in pin sockets which are labeled. All of the component labels on board keep consistent with those on the schematic generated in the MindiTM Amplifier Designer. The op amps are bypassed by 0.1 F capacitors and the single op amp U1 can have either a PDIP-8 or SOIC-8 package. * PDIP-8 packages are inserted into the DIP-8 socket to the right of the U1 label * SOIC-8 packages can be accommodated; see Section 2.4.3 "Amplifier Modifications Using 8-Pin SOIC Op Amps" The (surface mount) test points for power supply, ground, input signal and output signal allow lab equipment to be connected to the board. The MCP6XXX Amplifier Evaluation Board 3 top view is shown in Figure 2-2. FIGURE 2-2: DS51673A-page 8 MCP6XXX Amplifier Evaluation Board 3 Top View. (c) 2007 Microchip Technology Inc. Installation and Operation 2.3.1 Top Level Amplifier Circuit Diagrams 2.3.1.1 POWER SUPPLY BLOCK The power supply is protected by a zener diode and bypassed by a capacitor. Figure 2-3 shows the circuit diagram for the power supply. CP1 = 1.0 F. VS Power Supply VDD CP1 DP1 Note: FIGURE 2-3: 2.3.1.2 DP1 is a zener diode with nominal voltage of 6.2V Power Supply Block. MID-SUPPLY REFERENCE BLOCK The mid-supply reference consists of a voltage divider and a buffer amplifier. Figure 2-4 shows the circuit diagram for the mid-supply reference. CR1 = CR2 = 0.1 F, RR1 = RR2 = 20.0 k. Mid-supply Reference VDD RR1 CR2 FIGURE 2-4: (c) 2007 Microchip Technology Inc. RR2 CR1 UR1 VR Mid-Supply Reference Block. DS51673A-page 9 MCP6XXX Amplifier Evaluation Board 3 User's Guide 2.3.1.3 OUTPUT LOAD BLOCK The output load consists of a capacitor and two resistors. Figure 2-5 shows the circuit diagram for the output load. RISO is used to stabilize the amplifier when it drives a large capacitive load (CL). RISO is a short circuit (0) when CL is small. VOUT Output Load RISO VL RL FIGURE 2-5: DS51673A-page 10 CL Output Load Block. (c) 2007 Microchip Technology Inc. Installation and Operation 2.3.1.4 DIFFERENCE AMPLIFIER * Amplifies the difference between two voltages, while rejecting the common mode (average) input voltage. Output voltage is shifted by a reference voltage for single supply * The MindiTM Amplifier Designer gives design recommendations for the difference amplfier circuit; see the circuit diagram shown in Figure 2-6 - Fill the sockets with the recommended resistors and capacitors VS VDD V1 Source Configuration VA FIGURE 2-6: R4 VR VR Mid-supply Reference Power Supply C1 VOUT U1 V2 VB R3 R1 Output Load VL R2 Difference Amplifier Circuit Diagram. * Source configuration consists of an inverting amplifier and a jumper. Figure 2-4 shows the circuit diagram for the source configuration. CS1 = 0.1 uF, RS1 = RS2 = 20.0 k, RS3 = 10.0 k VDD Source Configuration V1 VA RS3 US1 RS1 (c) 2007 Microchip Technology Inc. JPS1 RS2 #1 #2 #3 VB FIGURE 2-7: VR CS1 V2 Source Configuration Block. DS51673A-page 11 MCP6XXX Amplifier Evaluation Board 3 User's Guide The jumper JPS1 positions have the following effects: Jumper JPS1 Position Effects V1 = V2 = 1 VA VA VA is a common mode input signal 2 VA -VA VA is a diffential mode input signal 3 VA VB VA and VB are connected directly to V1 and V2 Note 1: When JPS1 is in position 2, V2 is actually described by the following equation: V 2 = V R - ( V A - V R ) ( R S2 R S1 ) = V R ( 1 + R S2 R S1 ) - V A ( R S2 R S1 ) It is assumed that RS2 = RS1. Figure 2-8 shows an example supported by the MCP6XXX Amplifier Evaluation Board 3. It is assumed that VA is a differential mode input signal. * GND Mid-supply Reference Block * * Test Points VREF VDD VDD R3 VA 0.1 F R4 * Power Supply * CU1 CP1 1.0 F U1 R1 Source Configuration Block * CL RL GND VL * * RISO 1 2 3 VB GND R2 * DP1 FIGURE 2-8: Difference Amplifier Example Supported by the MCP6XXX Amplifier Evaluation Board 3. DS51673A-page 12 (c) 2007 Microchip Technology Inc. Installation and Operation 2.4 MCP6XXX AMPLIFIER EVALUATION BOARD 3 OPERATION Items discussed in this section include: * Building the Amplifier * Testing the Amplifier * Amplifier Modification: Using 8-Pin SOIC Op Amps 2.4.1 Building the Amplifier The accessory bag that comes with this kit makes it quick and easy to evaluate the amplifier described below, which was designed in the MindiTM Amplifier Designer. This amplifier is described as follows: * * * * * Difference Amplifier (Single Supply Configuration) Power Supply Voltage is 5.0V Differential Mode Input Signal Desired Closed Loop Gain is 1 V/V Load Capacitance is 56 pF FIGURE 2-9: (c) 2007 Microchip Technology Inc. Difference Amplifier Designed In the MindiTM Amplifier Designer. DS51673A-page 13 MCP6XXX Amplifier Evaluation Board 3 User's Guide Figure 2-10 shows the same circuit redrawn to emphasize the difference amplifier. VS VDD V1 Source Configuration VA R4 VR VR Mid-supply Reference Power Supply C1 VOUT Output Load U1 V2 VB R3 R1 VL R2 FIGURE 2-10: Difference Amplifier Supported by the MCP6XXX Amplifier Evaluation Board 3 Kit. Each of the components in Figure 2-10 that needs to be inserted in a socket on the MCP6XXX Amplifier Evaluation Board 3 is listed in Table 2-1. TABLE 2-1: AMPLIFIER COMPONENTS LIST PCB Labels Component Values R1 1.98 k R2 1.98 k R3 1.98 k R4 1.98 k RISO 0 RL 1.98 k CL 56 pF U1 MCP6021, PDIP-8, 10 MHz For the differential mode input signal, the jumper JPS1 position is listed in Table 2-2. TABLE 2-2: DS51673A-page 14 JUMPER POSITION Jumper Position JPS1 2 (c) 2007 Microchip Technology Inc. Installation and Operation The fully assembled difference amplifier circuit diagram is shown in Figure 2-11. Mid-supply Reference Block Power Supply VDD * * GND VREF R3 VA VDD R4 0.1 F * * Test Points * CU1 CP1 1.0 F R1 Source Configuration Block * CL RL GND VL * * RISO 1 2 3 VB GND U1 R2 * DP1 FIGURE 2-11: Fully Assembled Difference Amplifier Supported by the MCP6XXX Amplifier Evaluation Board 3. The fully assembled MCP6XXX Amplifier Evaluation Board 3 top view is shown in Figure 2-12. FIGURE 2-12: Picture of the Difference Amplifier Supported by the MCP6XXX Amplifier Evaluation Board 3. (c) 2007 Microchip Technology Inc. DS51673A-page 15 MCP6XXX Amplifier Evaluation Board 3 User's Guide 2.4.2 Testing the Amplifier 2.4.2.1 CHECKING THE TEST POINTS The (surface mount) test points for power supply, ground, input signal and output signal allow lab equipment to be connected to the board. Figure 2-13 shows the test points to check. VREF Test Point GND Test Point VDD Test Point VA Test Point GND Test Point VB Test Point FIGURE 2-13: DS51673A-page 16 VL Test Point GND Test Point Checking the Test Points. (c) 2007 Microchip Technology Inc. Installation and Operation 2.4.2.2 TRANSIENT RESPONSES This difference amplifier was built, and its responses were measured. A MCP6021 op amp, 1% resistors, and 5% capacitors were used. Notice how close the measured and simulated data are. 2.4.2.2.1 Transient Step Response In Bench Measurement: * Set VIN as a differential mode signal with a step amplitude of 2.0V and a center voltage of 2.5V. (i.e. VIN starts 1.0V below center and ends 1.0V above center * The measured step response is shown in Figure 2-14. It is a signal with a step amplitude of 4.0V and a center voltage of 2.5V. (i.e. VOUT starts 2.0V below center and ends 2.0V above center Note: The center voltage of VIN is set at VREF = VDD/2 (For VDD = 5.0V, VREF = 2.5V) VOUT = 4.5V VIN = 3.5V VREF = 2.5V FIGURE 2-14: (c) 2007 Microchip Technology Inc. Measured Step Response. DS51673A-page 17 MCP6XXX Amplifier Evaluation Board 3 User's Guide In the MindiTM Amplifier Designer: * Set VIN as a differential mode signal with a step amplitude of 2.0V and a center voltage of 2.5V. (i.e. VIN starts 1.0V below center and ends 1.0V above center) * The simulated step response is shown in Figure 2-15. It is a signal with a step amplitude of 4.0V and a center voltage of 2.5V. (i.e. VOUT starts 2.0V below center and ends 2.0V above center) Note: The center voltage of VIN is set at VREF = VDD/2 (For VDD = 5.0V, VREF = 2.5V) VOUT = 4.5V VIN = 3.5V VREF = 2.5V FIGURE 2-15: DS51673A-page 18 Simulated Step Response. (c) 2007 Microchip Technology Inc. Installation and Operation 2.4.2.2.2 Transient Sine Wave Response In Bench Measurement: * Set VIN as a sine wave with a frequency of 100.0 Hz, a peak-to-peak voltage of 2.0V and a center voltage of 2.5V * The measured sine wave response is shown in Figure 2-16. It is a sine wave signal with a frequency of 100.0 Hz, a peak-to-peak voltage of 4.0V and a center voltage of 2.5V Note: The center voltage of VIN is set at VREF = VDD/2 (For VDD = 5.0V, VREF = 2.5V) VOUT VREF VIN FIGURE 2-16: (c) 2007 Microchip Technology Inc. Measured Sine Wave Response. DS51673A-page 19 MCP6XXX Amplifier Evaluation Board 3 User's Guide In the MindiTM Amplifier Designer: * Set VIN as a sine wave with a frequency of 100.0 Hz, a peak-to-peak voltage of 2.0V and a center voltage of 2.5V * The simulated sine wave response is shown in Figure 2-17. It is a sine wave signal with a frequency of 100.0 Hz, a peak-to-peak voltage of 4.0V and a center voltage of 2.5V Note: The center voltage of VIN is set at VREF = VDD/2 (For VDD = 5.0V, VREF = 2.5V) VOUT VREF VIN FIGURE 2-17: DS51673A-page 20 Simulated Sine Wave Response. (c) 2007 Microchip Technology Inc. Installation and Operation 2.4.3 Amplifier Modifications Using 8-Pin SOIC Op Amps There are two options available to use single op amps in SOIC-8 packages (150 mil wide): * Soldering onto the MCP6XXX Amplifier Evaluation Board 3, or * Soldering it onto a separate board which is connected to the DIP-8 socket Note: The DIP-8 socket must be empty; only one op amp can be used at a time. Figure 2-18 shows a SOIC-8 op amp soldered onto the MCP6XXX Amplifier Evaluation Board 3. Solder an SOIC-8 Op Amp onto the board The PDIP socket must be empty FIGURE 2-18: Op Amp in SOIC-8 package soldered onto MCP6XXX Amplifier Evaluation Board 3. Figure 2-19 shows a SOIC-8 op amp and a DIP-8 socket, soldered onto the 8-Pin SOIC/MSOP/TSSOP/DIP Evaluation Board available from Microchip Technology Inc. (order # SOIC8EV). The two interconnect strips on the bottom are Samtec part # BBS-14-T-B or equivalent and are soldered into the through holes for the DIP-8 socket. Figure 2-20 shows this board plugged into the MCP6XXX Amplifier Evaluation Board 3. Note: (c) 2007 Microchip Technology Inc. Insert the interconnect strips into the DIP-8 socket on the MCP6XXX Amplifier Evaluation Board 3. Place the SOIC8EV board on the top of the interconnect strips with the same pin orientation. Now solder the strips to the top board; this procedure ensures correct alignment of the strips. Clip the pins flush with the top surface of the SOIC8EV board, then solder the SOIC-8 op amp on the top. DS51673A-page 21 MCP6XXX Amplifier Evaluation Board 3 User's Guide (Front View) DS51673A-page 22 (Back View) FIGURE 2-19: Op Amp in SOIC-8 package soldered onto a separate board. FIGURE 2-20: Board 3. Connecting Adaptor Board onto MCP6XXX Amplifier Evaluation (c) 2007 Microchip Technology Inc. MCP6XXX AMPLIFIER EVALUATION BOARD 3 USER'S GUIDE Appendix A. Schematic and Layouts A.1 INTRODUCTION This appendix contains the following schematics and layouts for the MCP6XXX Amplifier Evaluation Board 3: * * * * Board - Schematic Board - Top Silk Layer Board - Top Trace and Silk Layer Board - Bottom Layer (c) 2007 Microchip Technology Inc. DS51673A-page 23 MCP6XXX Amplifier Evaluation Board 3 User's Guide BOARD - SCHEMATIC M A.2 1 3 DS51673A-page 24 (c) 2007 Microchip Technology Inc. Schematic and Layouts A.3 BOARD - TOP SILK LAYER (c) 2007 Microchip Technology Inc. DS51673A-page 25 MCP6XXX Amplifier Evaluation Board 3 User's Guide A.4 BOARD - TOP TRACE AND SILK DS51673A-page 26 (c) 2007 Microchip Technology Inc. Schematic and Layouts A.5 BOARD - BOTTOM LAYER (c) 2007 Microchip Technology Inc. DS51673A-page 27 MCP6XXX Amplifier Evaluation Board 3 User's Guide NOTES: DS51673A-page 28 (c) 2007 Microchip Technology Inc. MCP6XXX AMPLIFIER EVALUATION BOARD 3 USER'S GUIDE Appendix B. Bill of Materials (BOM) B.1 MCP6XXX AMPLIFIER EVALUATION BOARD 3 BOM The Bill of Materials (BOM) in Table B-1 corresponds to Figure 2-1 and Figure 2-2. Unpopulated parts are in Table B-2. TABLE B-1: Qty BILL OF MATERIALS (102-00153R1) (NOTE 1) Reference Description Manufacturer Part Number 1 CP1 CAP CERAMIC 1UF 10% 25V X5R 0805 Panasonic(R) 5 CR1,CR2 CS1 CU1,CU2 CAP CERAMIC .1UF 10% 25V X7R 0805 Panasonic - ECG ECJ-2VB1E104K 4 EA Corner BUMPER CLEAR .375X.15"DOME Richco Plastic Co RBS-12 1 JPS1 CONN HEADR BRKWAY .100 06POS STR Tyco(R) Electronics/Amp 4-103327-0-06 1 PCB RoHS Compliant Bare PCB Microchip Technology Inc. 14 Pin Socket PIN RECPT .015/.025 DIA 0667 Mill-Max(R) SER 0667-0-15-01-30-27-10-0 4 RR1,RR2 RS1,RS2 RES 20.0K OHM 1/8W 1% 0805 Panasonic - ECG SMD ERJ-6ENF2002V 1 RS3 RES 10.0K OHM 1/8W 1% 0805 Panasonic - ECG SMD ERJ-6ENF1002V 1 Shunt for JPS1 SOCKET,SHORT BLKS W TAB BLK JAMECO VALUEPRO 2012JH-R 8 Test Points PC TEST POINT COMPACT SMT Keystone Electronics(R) 5016 2 UR1,US1 MCP6021 SOT-23-5 Single OpAmp Microchip Technology Inc. MCP6021T-E/OT 1 For U1 CONN IC SOCKET 8POS DIP TIN Tyco Electronics/Amp 2-641260-1 Note 1: - ECG ECJ-2FB1E105K 104-00153 The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM used in manufacturing uses all RoHS-compliant components. (c) 2007 Microchip Technology Inc. DS51673A-page 29 Bill of Materials (BOM) TABLE B-2: Qty BILL OF MATERIALS - UNPOPULATED PARTS (102-00153R1) Reference Description Manufacturer Part Number 1 U1 MCP6021 PDIP-8, Single Op Amp Microchip Technology Inc MCP6021T-E/P 1 U2 MCP6021 SOIC-8, Single Op Amp Microchip Technology Inc MCP6021T-E/SN 7 R1-R4, RISO, RL, Not Populated when shipped to CL customer -- -- Note 1: The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM used in manufacturing uses all RoHS-compliant components. The BOM in Table B-3 corresponds to the collection of resistors, capacitorys, jumpers and MCP6021 op amps that come in the Accessory Bag which is shipped in the MCP6XXX Amplifier Evaluation Board 3 Kit. These components are placed in an separate ESD bag. They support the circuit in Section 2.4.1 "Building the Amplifier". Customers need to provide the resistors and capacitors for more amplifier circuits. TABLE B-3: Qty BILL OF MATERIALS - ACCESSORY BAG PARTS (102-00153R1) Reference Description Manufacturer Electronics(R) Part Number 1 Accessory Bag CAP CER 56PF 50V C0G RADIAL Murata 1 Accessory Bag JUMPER ZERO OHM 1/8W Yageo(R) Corporation ZOR-12-B-52 5 Accessory Bag RES 1.96K OHM 1/4W 1% METAL FILM Yageo Corporation MFR-25FBF-1K96 1 ESD Sample Box MCP6021 Single OpAmp PDIP-8 Note 1: RPE5C1H560J2P1Z03B Microchip Technology Inc MCP6021-E/P The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM used in manufacturing uses all RoHS-compliant components. (c) 2007 Microchip Technology Inc. DS51673A-page 30 Bill of Materials (BOM) NOTES: (c) 2007 Microchip Technology Inc. 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