MCP6031 Photodiode PICtail™ Plus Demo Board User’s Guide © 2008 Microchip Technology Inc.
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.
MCP6031 PHOTODIODE PICtail™ PLUS DEMO BOARD USER’S GUIDE Table of Contents Preface ........................................................................................................................... 1 Introduction............................................................................................................ 1 Document Layout .................................................................................................. 1 Conventions Used in this Guide ................................
MCP6031 Photodiode PICtail™ Plus Demo Board User’s Guide NOTES: DS51763A-page iv © 2008 Microchip Technology Inc.
MCP6031 PHOTODIODE PICtail™ PLUS DEMO 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.
MCP6031 Photodiode PICtail™ Plus Demo Board 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® IDE User’s Guide ...is the only compiler...
Preface RECOMMENDED READING This user's guide describes how to use MCP6031 Photodiode PICtail™ Plus Demo Board . Other useful documents are listed below. The following Microchip documents are available and recommended as supplemental reference resources. • MCP6031/2/3/4 Data Sheet, “0.9 μA, High Precision Op Amps” (DS22041) This data sheet provides detailed information regarding the MCP603X Op Amps.
MCP6031 Photodiode PICtail™ Plus Demo Board User’s Guide NOTES: DS51763A-page 4 © 2008 Microchip Technology Inc.
MCP6031 PHOTODIODE PICtail™ PLUS DEMO BOARD USER’S GUIDE Chapter 1. Product Overview 1.1 INTRODUCTION The MCP6031 Photodiode PICtail™ Plus Demo Board is described by the following: • Assembly # : 114-00219 • Order # : MCP6031DM-PCTL • Name: MCP6031 Photodiode PICtail™ Plus Demo Board Items discussed in this chapter include: • MCP6031 Photodiode PICtail™ Plus Demo Board Kit Contents • MCP6031 Photodiode PICtail™ Plus Demo Board Description 1.
MCP6031 Photodiode PICtail™ Plus Demo Board User’s Guide 1.3 MCP6031 PHOTODIODE PICtail™ PLUS DEMO BOARD DESCRIPTION The MCP6031 Photodiode PICtail™ Plus Demo Board demonstrates how to use a transimpedance amplifier, which consists of MCP6031 high precision op amp and external resistors, to convert photo-current (IS) to voltage. The circuit was not calibrated for absolute accuracy.
Product Overview Figure 1-3 shows the top view of the MCP6031 Photodiode PICtail™ Plus Demo Board. FIGURE 1-3: Top view of MCP6031 Photodiode PICtail™ Plus Demo Board Figure 1-4 shows the circuit diagram of MCP6031 Photodiode PICtail™ Plus Demo Board. C1 is for compensation purpose and no need for the board. It may be needed when MCP6031 is replaced by the other Microchip’s op amp. The DC output voltage due to the source photo-current will be VOUT = ISR1, where R1 is the feedback resistor.
MCP6031 Photodiode PICtail™ Plus Demo Board User’s Guide For the design approach of this board, please refer to AN951, “Amplifying High-Impedance Sensors - Photodiode Example” (DS00951) as reference resource. This application note discusses the analog conditioning circuit used for high-impedance sensors that act like current sensors.
MCP6031 PHOTODIODE PICtail™ PLUS DEMO BOARD USER’S GUIDE Chapter 2. Installation and Operation 2.1 INTRODUCTION This chapter shows how to set up the MCP6031 Photodiode PICtail™ Plus Demo Board and explore the operation of a light sensing application. Items discussed in this chapter include: • Required Tools • MCP6031 Photodiode PICtail™ Plus Demo Board Set-Up • MCP6031 Photodiode PICtail™ Plus Demo Board Operation 2.2 REQUIRED TOOL • Explorer 16 Development Board 2.
MCP6031 Photodiode PICtail™ Plus Demo Board User’s Guide 2.4 MCP6031 PHOTODIODE PICtail™ PLUS DEMO BOARD OPERATION Figure 2-2 shows data taken near an incandescent lamp powered by a battery. Incandescent lamp LED FIGURE 2-2: DS51763A-page 10 MCP6031 Photodiode PICtail™ Plus Demo Board Operation. © 2008 Microchip Technology Inc.
MCP6031 PHOTODIODE PICtail™ PLUS DEMO BOARD USER’S GUIDE Appendix A. Schematic and Layouts A.1 INTRODUCTION This appendix contains the following schematics and layouts for the MCP6031 Photodiode PICtail™ Plus Demo Board : • • • • Board – Schematic Board – Top Silk Layer Board - Top Metal And Top Silk Layers Board – Bottom Metal Layer © 2008 Microchip Technology Inc.
MCP6031 Photodiode PICtail™ Plus Demo Board User’s Guide BOARD - SCHEMATIC M A.2 DS51763A-page 12 © 2008 Microchip Technology Inc.
Schematic and Layouts A.3 BOARD - TOP SILK LAYER A.4 BOARD - TOP METAL AND TOP SILK LAYERS © 2008 Microchip Technology Inc.
MCP6031 Photodiode PICtail™ Plus Demo Board User’s Guide A.5 BOARD - BOTTOM METAL LAYER DS51763A-page 14 © 2008 Microchip Technology Inc.
MCP6031 PHOTODIODE PICtail™ PLUS DEMO BOARD USER’S GUIDE Appendix B. Bill of Materials (BOM) TABLE B-1: Qty BILL OF MATERIALS (102-00219) Reference Description Manufacturer Part Number ® ECJ-2VB1H333K 1 C2 CAP 33,000PF 50V CERM X7R 0805 Panasonic 2 C3, C4 CAP .1UF 25V CERAMIC X7R 0805 Panasonic® ECJ-2VB1E104K 1 C5 CAP 1.0UF 16V CERAMIC X7R 0805 Kemet® Electronics Corp. C0805C105K4RACTU 1 D1 PIN PHOTODIODE Panasonic® PNZ334 1 R1 RES 42.
WORLDWIDE SALES AND SERVICE AMERICAS ASIA/PACIFIC ASIA/PACIFIC EUROPE Corporate Office 2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7200 Fax: 480-792-7277 Technical Support: http://support.microchip.com Web Address: www.microchip.
