MCP6H04 Evaluation Board User’s Guide © 2011 Microchip Technology Inc.
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MCP6H04 EVALUATION BOARD USER’S GUIDE Table of Contents Preface ........................................................................................................................... 5 Introduction............................................................................................................ 5 Document Layout .................................................................................................. 5 Conventions Used in this Guide ...................................................
MCP6H04 Evaluation Board User’s Guide NOTES: DS52005A-page 4 © 2011 Microchip Technology Inc.
MCP6H04 EVALUATION BOARD 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.
MCP6H04 Evaluation Board User’s Guide CONVENTIONS USED IN THIS GUIDE This manual uses the following documentation conventions: DOCUMENTATION CONVENTIONS Description Arial font: Italic characters 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 Referenced books Emphasized text A window A dialog A menu selection A field name in a window or dialog A menu path MPLAB® IDE User’s Guide ...
Preface RECOMMENDED READING This user's guide describes how to use the MCP6H04 Evaluation Board. Other useful documents are listed below. The following Microchip document is available and recommended as a supplemental reference resource. • MCP6H01/2/4 - “1.2 MHz, 16V Op Amps” (DS22243) 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.
MCP6H04 Evaluation Board User’s Guide NOTES: DS52005A-page 8 © 2011 Microchip Technology Inc.
MCP6H04 EVALUATION BOARD USER’S GUIDE Chapter 1. Product Overview 1.1 INTRODUCTION The MCP6H04 Evaluation Board is described as follows: • Assembly #:114-00375-R2 • Order#: MCP6H04EV • Name: MCP6H04 Evaluation Board 1.2 BOARD DESCRIPTION The MCP6H04 Evaluation Board is intended to support an instrumentation amplifier and show the capability of the MCP6H04 operational amplifier.
MCP6H04 Evaluation Board User’s Guide 1.3 WHAT THE MCP6H04 EVALUATION BOARD KIT INCLUDES • MCP6H04 Evaluation Board, 102-00375 • Important Information Sheet • Accessories Bag – contains loose parts for populating sockets on board, such as resistors and capacitors FIGURE 1-2: DS52005A-page 10 MCP6H04 Evaluation Board View. © 2011 Microchip Technology Inc.
MCP6H04 EVALUATION BOARD USER’S GUIDE Chapter 2. Installation and Operation 2.1 INTRODUCTION This chapter describes how to set up the MCP6H04 Evaluation Board. Topics discussed in this chapter include: • Required Tools • MCP6H04 Evaluation Board Set-Up • MCP6H04 Evaluation Board Operation 2.2 REQUIRED TOOLS The following tools are required for testing the functionality of the board: • Lab power supply • Lab dual signal source (e.g., dual function generator) • Lab measurement equipment (e.g.
MCP6H04 Evaluation Board User’s Guide The power supply voltage needs to be in the allowed range for the op amp. The MCP6H04 device supports a maximum of 16V power supply. The power supply is protected by a Zener diode with a nominal voltage of 16V and bypassed by a 1 µF capacitor (see Figure 2-3). The mid-supply reference voltage consists of a voltage divider and a buffer amplifier (see Figure 2-4). The resistors that are part of the amplifier are placed in pin sockets, which are labeled.
Installation and Operation 2.3.1 Top Level Amplifier Circuit Diagram 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 (C2 = 1 µF). DP1 is a Zener diode with a nominal voltage of 16V. VDD VDD C2 DP1 FIGURE 2-3: 2.3.1.2 Circuit Diagram for Power Supply. MID-SUPPLY REFERENCE BLOCK The mid-supply reference consists of a voltage divider and a buffer amplifier.
MCP6H04 Evaluation Board User’s Guide 2.3.1.4 INPUT STAGE The input stage consists of two resistors and three capacitors. All three capacitors are forming a noise filter. Figure 2-6 shows the circuit diagram of the input stage (C5 = C6 = 10 nF, C4 = 100 nF and R5 =R6 = 1K). R5 VIN(-) VA C5 C4 C6 VB VIN(+) R6 FIGURE 2-6: 2.3.1.5 Input Stage Block. INPUT BUFFER BLOCK The input buffer block consists of two op amps in buffer configuration with outputs tied together through one resistor.
Installation and Operation 2.3.1.6 DIFFERENCE AMPLIFIER This circuit amplifies the difference between two voltages, while rejecting the Common mode input voltage. Output voltage can be shifted by a reference voltage for single supply operation. Fill the sockets with the recommended resistors and capacitors (see the circuit diagram shown in Figure 2-8). VOUT1 R1 R2 VDD - VC + VOUT2 R1* RL R2* JP1 VREF FIGURE 2-8: Difference Amplifier Block.
MCP6H04 Evaluation Board User’s Guide C7 100n VIN- X1 1K VIN(-) VOUT1 MCP6H04 R10 C3 R1 50k R9 100k MCP6H04 R5 R4 10k VREF X4 R6 C1 100k 100n V1 16V 10k 10n X3 C2 100n R2 1k 10n VIN+ R 11 C4 1K VIN(+) R3 MCP6H04 X2 C6 C5 100n MCP6H01 VOUT R12 10k 50k VOUT2 R7 R8 10k 10k C9 56p 100n V2 16V FIGURE 2-9: DS52005A-page 16 Schematic of the Instrumentation Amplifier Designed for Simulation. © 2011 Microchip Technology Inc.
Installation and Operation Figure 2-10 shows the same circuit redrawn to emphasize the instrumentation amplifier. VOUT1 VIN(-) + - + R2 R1 VDD VDD RF RF* RG VIN(+) U1B U1A RL CL Voltage reference VREF VDD R1* U1C R2* VOUT2 Power Supply FIGURE 2-10: VOUT + VDD Instrumentation Amplifier Diagram Block. Each of the components in Figure 2-10 that need to be inserted in a socket on the MCP6H04 Evaluation Board is listed in Table 2-1 and Table 2-2. The op amp is soldered on the PCB.
MCP6H04 Evaluation Board User’s Guide The fully assembled MCP6H04 Evaluation Board top view is shown in Figure 2-11. FIGURE 2-11: MCP6H04 Evaluation Board Top View. 2.4.2 Testing the Amplifier 2.4.2.1 CHECKING THE TEST POINTS The test points for the power supply, ground, input signals and output signals allow lab equipment to be connected to the board. Figure 2-12 shows the test points to check.
Installation and Operation 2.4.2.2 BOARD VALIDATION All resistors in sockets have 0.1% tolerance and all soldered resistors have 1% tolerance. The capacitors have 20% tolerance. 2.4.2.2.
MCP6H04 Evaluation Board User’s Guide 10.50 OUT VREF 10.00 9.500 9.000 (V) 8.500 8.000 7.500 7.000 6.500 6.000 5.500 0.000m 50.00m 100.0m 150.0m 200.0m 250.0m Time (s) 300.0m 350.0m 400.0m 450.0m 4.010 500.0m VIN+ VIN- 4.008 4.005 (V) 4.003 4.000 3.998 3.995 3.993 3.990 0.000m 50.00m 100.0m 150.0m 200.0m 250.0m Time (s) 300.0m 350.0m 400.0m 450.0m 5.250 500.0m VOUT2 VOUT1 5.000 4.750 4.500 (V) 4.250 4.000 3.750 3.500 3.250 3.000 2.750 0.000m 50.00m FIGURE 2-14: 2.4.2.2.
Installation and Operation Simulation settings: • • • • • • Set VIN for Source(-) at 50 mV,10 Hz, 0° phase and common mode voltage 4V Set VIN for Source(+) at 50 mV,10 Hz, 180° phase and common mode voltage 4V VREF = VDD/2 VDD=16V The output signal is centered on 8V The amplifier’s Gain is 101V/V Figure 2-16 shows the result of this simulation. 9.250 OUT VREF 9.000 8.750 8.500 (V) 8.250 8.000 7.750 7.500 7.250 7.000 6.750 0.000m 100.0m 200.0m 300.0m 400.0m 500.0m Time (s) 4.005 VIN+ 4.004 4.
MCP6H04 Evaluation Board User’s Guide 2.4.2.2.3 DC Response Settings in bench measurement: • • • • Set VIN for Source(-) at 80 mV DC signal Set VIN for Source(+) at 30 mV DC signal VREF = VDD/2 VDD = 16V Figure 2-17 shows the result of this measurement. VOUT1 VOUT2 VOUT VREF FIGURE 2-17: DC Response. Simulation settings: • • • • Set VIN for Source(-) at 80 mV DC signal Set VIN for Source(+) at 30 mV DC signal VREF = VDD/2 VDD = 16V Figure 2-18 shows the result of this measurement.
Installation and Operation 8.125 OUT VREF 8.100 (V) 8.075 8.050 8.025 8.000 7.975 0.000u 0.500u 1.000u 1.500u 2.000u 2.500u Time (s) 3.000u 3.500u 4.000u 4.500u 150.0m 5.000u VIN+ VINVOUT1 VOUT2 125.0m (V) 100.0m 75.00m 50.00m 25.00m 0.000m 0.000u FIGURE 2-18: © 2011 Microchip Technology Inc. 0.500u 1.000u 1.500u 2.000u 2.500u Time (s) 3.000u 3.500u 4.000u 4.500u 5.000u Simulation of the DC Response.
MCP6H04 Evaluation Board User’s Guide NOTES: DS52005A-page 24 © 2011 Microchip Technology Inc.
MCP6H04 EVALUATION BOARD USER’S GUIDE Appendix A. Schematic and Layouts A.1 INTRODUCTION This appendix contains the following schematics and layouts of the MCP6H04 Evaluation Board: • • • • Board – Schematic Board – Silk and Solder Mask Board – Top Metal Layer Board – Bottom Metal Layer (bottom View) © 2011 Microchip Technology Inc.
6RXUFH TP7 6RXUFH TP6 GND GND . R6 . R5 VCC Q) C6 C5 Q) GND D1 9 Q) C4 X) U1C C2 GND 11 6 10 0&3 + U1B 0&3 + 5 VDD VSS OUTB VSS VDD 9'' GND OUTC VCC VCC TP2 +C -C -B +B GND 11 4 4 11 8 7 . RF* . RG RF . 9RXW TP5 9RXW TP4 . . R1* R1 2 3 -A +A . VDD VSS . R2* GND Q) C1 OUTA GND R2 11 1 VCC 0&3 + 9UHI 1 *1' 2 U1A JP1 2 1 GND *1' TP10 .
Schematic and Layouts A.3 BOARD – SILK AND SOLDER MASK A.4 BOARD – TOP METAL LAYER © 2011 Microchip Technology Inc.
MCP6H04 Evaluation Board User’s Guide A.5 BOARD – BOTTOM METAL LAYER (BOTTOM VIEW) DS52005A-page 28 © 2011 Microchip Technology Inc.
MCP6H04 EVALUATION BOARD USER’S GUIDE Appendix B. Bill of Materials TABLE B-1: Qty BILL OF MATERIALS (BOM) Reference 3 C1,C3,C4 1 2 Description Manufacturer Part Number CAPACITOR, 0805, X7R, 100V, 100NF AVX Corporation C2 CAPACITOR, 0805, X7R, 25V, 1UF AVX Corporation 08053C105K4Z2A C5,C6 CAPACITOR, 0805, X7R, 100V, 10NF AVX Corporation 08051C103K4Z2A 1 DP1 ZENER, 16V, 350MW, SOT-23 BZX84C16-TP 1 JP1 CONN HEADR BRKWAY .100 02POS TE Connectivity Ltd.
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