2004 Microchip Technology Inc.
DS51514A
Photodiode PGA
PICtail™ Daughter Board
User’s Guide
Page 1: ...2004 Microchip Technology Inc DS51514A Photodiode PGA PICtail Daughter Board User s Guide...
Page 2: ...mentioned herein are property of their respective companies 2004 Microchip Technology Incorporated Printed in the U S A All Rights Reserved Printed on recycled paper Note the following details of the...
Page 3: ...ociated Tools 8 Chapter 2 Setup and Installation 11 2 1 Introduction 11 2 2 Required Tools 11 2 3 Connecting the Photodiode PGA PICtail Daughter Board 11 Chapter 3 Operation 13 3 1 Introduction 13 3 2...
Page 4: ...Photodiode PGA PICtail Daughter Board User s Guide DS51514A page iv 2004 Microchip Technology Inc NOTES...
Page 5: ...entation 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...
Page 6: ...and how they work together Chapter 2 Set Up Overview Covers the initial set up of the Photodiode PGA PICtail Daughter Board listing required tools instructions on how to connect this board and demonst...
Page 7: ...ialog button Click OK A tab Click the Power tab bnnnn A binary number where n is a digit b00100 b10 Text in angle brackets A key on the keyboard Press Enter F1 Courier font Plain Courier Sample source...
Page 8: ...76 Contains instructions on how to use the Signal Analysis PICtail Daughter Board s hardware and software AN951 Amplifying High Impedance Sensors Photodiode Example DS00951 Explains the functionality...
Page 9: ...Microchip sales offices distributors and factory representatives CUSTOMER SUPPORT Users of Microchip products can receive assistance through several channels Distributor or Representative Local Sales...
Page 10: ...Photodiode PGA PICtail Daughter Board User s Guide DS51514A page 6 2004 Microchip Technology Inc NOTES...
Page 11: ...able Gain Amplifier PGA Items discussed in this chapter include Kit Contents Photodiode PGA PICtail Daughter Board Associated Tools Initial Set up 1 2 KIT CONTENTS Photodiode PGA PICtail Daughter Boar...
Page 12: ...possible to send any desired signal to the PGA More details on the circuit and on its design can be found in Appendix A Schematic and Layouts and in Application Note 951 1 4 ASSOCIATED TOOLS Figure 1...
Page 13: ...for the daughter boards It can drive up to 5 F on the supply a larger capacitance may interfere with program timing 1 4 4 PICkit 1 Firmware This software resides on the PICkit 1 Flash Starter Kit s P...
Page 14: ...Diagram Photodiode Op Amp MCP6001U PGA MCP6S22 Photodiode PGA PICtail Daughter Board VOUT SPI Bus 4 Serial EEPROM PIC16F684 ADC Signal Analysis PICtail Daughter Board GND 5V GND 5V PICkit 1 Flash Sta...
Page 15: ...The Signal Analysis PICtail Daughter Board User s Guide shows how to install the PICkit 1 Signal Analysis PC Program on the PC and set up the Signal Analysis PICtail Daughter Board It also covers the...
Page 16: ...ICkit Flash Starter Kit board once it is plugged in 2 3 3 Photodiode PGA PICtail Daughter Board If you would rather use the MCP6S92 PGA take it out of the anti static bag and replace the already insta...
Page 17: ...LED array are good DC light sources Incandescent light bulbs and flourescent lights powered by the mains e g 120 VAC at 60 Hz are typical AC light sources When making light intensity measurements othe...
Page 18: ...e 1 1 a Select Write to Register from the indicated pull down list Figure 3 2 5 b Set A0 1 Figure 3 2 6 c Set C2 C0 to all zeros Figure 3 2 7 d Execute the command by clicking on the Write to PGA butt...
Page 19: ...from the second pull down list FIGURE 3 3 Standard ADC Options The PICkit 1 Signal Analysis PC Program allows the user to manually configure the ADC 1 Clicking the ADC button see Figure 3 4 opens the...
Page 20: ...e 1 2 Most of the probes from the lab equipment on the left connect to the test points The oscilloscope O Scope probe to VOUT connects to header J2 s pin 10 labeled RC0 FIGURE 3 6 Photodiode PGA PICta...
Page 21: ...o act as an anti aliasing filter for the ADC The voltage VOUT appears at this filter s output The MCP6SX2 Programmable Gain Amplifier PGA can be either the MCP6S22 or the MCP6S92 The PGA gains VOUT up...
Page 22: ...igure 1 3 The PICkit 1 Flash Starter Kit provides a 5V single supply voltage It can drive up to 5 F on the supply a larger capacitive load causes current loading and timing issues The PICkit 1 Flash S...
Page 23: ...2004 Microchip Technology Inc DS51514A page 19 A 4 BOARD SCHEMATIC M...
Page 24: ...Photodiode PGA PICtail Daughter Board User s Guide DS51514A page 20 2004 Microchip Technology Inc A 5 BOARD TOP SILK SCREEN AND METAL LAYERS...
Page 25: ...2004 Microchip Technology Inc DS51514A page 21 A 6 BOARD TOP METAL LAYER...
Page 26: ...Photodiode PGA PICtail Daughter Board User s Guide DS51514A page 22 2004 Microchip Technology Inc A 7 BOARD BOTTOM METAL LAYER...
Page 27: ...100 Pitch Vertical Tin Molex Waldom Electronics Corp 22 28 4140 1 R1 Chip Resistor 64 9 k 1 10W 1 0805 SMD Panasonic ECG ERJ 6ENF6492V 1 R2 Chip Resistor 10 0 k 1 10W 1 0805 SMD Panasonic ECG ERJ 6EN...
Page 28: ...SAR Tel 852 2401 1200 Fax 852 2401 3431 China Shanghai Tel 86 21 5407 5533 Fax 86 21 5407 5066 China Shenyang Tel 86 24 2334 2829 Fax 86 24 2334 2393 China Shenzhen Tel 86 755 8203 2660 Fax 86 755 82...
