Microchip Technology Photodiode PGAPICtail Manuale utente

2004 Microchip Technology Inc. DS51514A

Photodiode PGA

PICtail™ Daughter Board

User’s Guide

DS51514A-page ii 2004 Microchip Technology Inc.

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and may be superseded by updates.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 WAR-

RANTIES 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’s products as critical components in

life support systems is not authorized except with express

written approval by Microchip. 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, microID, MPLAB, PIC, PICmicro,

PICSTART, PRO MATE, PowerSmart, rfPIC, and

SmartShunt are registered trademarks of Microchip

Technology Incorporated in the U.S.A. and other countries.

AmpLab, FilterLab, MXDEV,MXLAB, PICMASTER, SEEVAL,

SmartSensor andTheEmbeddedControlSolutions Company

are registered trademarks of Microchip Technology

Incorporated in the U.S.A.

Analog-for-the-Digital Age, Application Maestro, dsPICDEM,

dsPICDEM.net, dsPICworks, ECAN, ECONOMONITOR,

FanSense, FlexROM, fuzzyLAB, In-Circuit Serial

Programming, ICSP, ICEPIC, Migratable Memory, MPASM,

MPLIB, MPLINK, MPSIM, PICkit, PICDEM, PICDEM.net,

PICLAB, PICtail, PowerCal, PowerInfo, PowerMate,

PowerTool, rfLAB, rfPICDEM, Select Mode, Smart Serial,

SmartTel and Total Endurance 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.

Printed on recycled paper.

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.

Microchip received ISO/TS-16949:2002 quality system certification for

its worldwide headquarters, design and wafer fabrication facilities in

Chandler and Tempe, Arizona and Mountain View, California in

October 2003. The Company’s quality system processes and

procedures are for its PICmicro®8-bit MCUs, KEELOQ®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.

PHOTODIODE PGA PICTAIL™

DAUGHTER BOARD USER’S GUIDE

2004 Microchip Technology Inc. DS51514A-page iii

Table of Contents

Preface ...........................................................................................................................1

Introduction............................................................................................................1

About This Guide................................................................................................... 2

Recommended Reading........................................................................................ 4

The Microchip Web Site........................................................................................5

Customer Support.................................................................................................5

Chapter 1. Overview.......................................................................................................7

1.1 Introduction ...............................................................................................7

1.2 Kit Contents .............................................................................................. 7

1.3 Photodiode PGA PICtail™ Daughter Board ............................................. 7

1.4 Associated 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 Light Sources .......................................................................................... 13

Appendix A. Schematic and Layouts ........................................................................17

A.1 Introduction .............................................................................................17

A.2 Demonstration Board Description ........................................................... 17

A.3 Additional Comments .............................................................................18

A.4 Board Schematic .................................................................................. 19

A.5 Board - Top Silk Screen And Metal Layers ...........................................20

A.6 Board - Top Metal Layer .......................................................................21

A.7 Board - Bottom Metal Layer .................................................................22

Appendix B. Bill-Of-Materials (BOM) .........................................................................23

Worldwide Sales and Service ....................................................................................24

Photodiode PGA PICtail™ Daughter Board User’s Guide

DS51514A-page iv 2004 Microchip Technology Inc.

NOTES:

PHOTODIODE PGA PICTAIL™

DAUGHTER BOARD USER’S GUIDE

2004 Microchip Technology Inc. DS51514A-page 1

INTRODUCTION

This chapter contains general information that will be useful to know before using the

Photodiode PGA PICtail™ Daughter Board. Items discussed in this chapter include:

• About this guide

• Recommended Reading

• The Microchip Web Site

• Customer Support

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®IDE

on-line help. Select the Help menu, and then Topics to open a list of available on-line

help files.

Photodiode PGA PICtail™ Daughter Board User’s Guide

DS51514A-page 2 2004 Microchip Technology Inc.

ABOUT THIS GUIDE

This document describes how to use the Photodiode PGA PICtail Daughter Board. It

also discusses the other available tools that are designed to work with it. The overall

outline is as follows:

•Chapter 1: Overview – An introduction to the Photodiode PGA PICtail Daughter Board

covering the kit contents, associated tools 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

demonstating how to verify the set-up

•Chapter 3: Using the Photodiode-PGA PICtail Daughter Board – Discusses different

light sources, using the Signal Analysis PC Application and setting up the boardto stand on

its own.

•Appendix A: Photodiode PGA PICtail Daughter Board Hardware – Gives detailed

information on the Photodiode PGA PICtail Daughter Board. Includes detailed circuit

explanation, schematic, board layouts and Bill-of-Materials (BOM)

2004 Microchip Technology Inc. DS51514A-page 3

Conventions Used In This Guide

This manual uses the following documentation conventions.

TABLE 1-1:

Description Represents Examples

Arial Font:

Italic Characters Referenced books MPLAB®IDE User’s Guide

Emphasized text ...is the only compiler...

Initial Caps A window the Output window

A dialog the Settings dialog

A menu selection select Enable Programmer

Quotes A field name in a window or

dialog “Save project before build”

Underlined, italic text with

right angle bracket A menu path File>Save

Bold Characters A dialog 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 code #define START

Filenames autoexec.bat

File paths c:\mcc18\h

Keywords _asm, _endasm, static

Command-line options -Opa+, -Opa-

Bit values 0, 1

Italic Courier A variable argument file.o, where file can be

any valid filename

0xnnnn A hexadecimalnumber where

nis a hexadecimal digit 0xFFFF, 0x007A

Square brackets [ ] Optional arguments mcc18 [options] file

[options]

Curly brackets and pipe

character: { | } Choice of mutually exclusive

arguments; an OR selection errorlevel {0|1}

Ellipses... Replaces repeated text var_name [,

var_name...]

Represents code supplied by

user void main (void)

{ ...

}

Photodiode PGA PICtail™ Daughter Board User’s Guide

DS51514A-page 4 2004 Microchip Technology Inc.

RECOMMENDED READING

This user's guide describes how to use the Photodiode PGA PICtail™ Daughter Board.

Other useful documents are listed below. The following Microchip documents are

available and recommended as supplemental reference resources.

PICkit™ 1 Flash Starter Kit User’s Guide (DS40051)

Contains instructions on how to use the PICkit 1 Flash Starter Kit hardware and

software.

Signal Analysis PICtail™ Daughter Board User’s Guide (DS51476)

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 and design of this board’s circuit. Contains measurement

results.

MCP6S21/2/6/8 Data Sheet (DS21117)

Gives detailed information on the MCP6S21/2/3/6/8 Programmable Gain Amplifiers

(PGAs).

MCP6S91/2/3 Data Sheet (DS21908)

Gives detailed information on the MCP6S91/2/3 PGAs.

PIC16F684 Data Sheet (DS41202)

Gives detailed information on the PICmicro®microcontroller used on the Signal

Analysis PICtail Daughter Board.

PIC16C745/765 Data Sheet (DS41124)

Gives detailed information on the PICmicro microcontroller used on the PICkit 1 Flash

Starter Kit.

2004 Microchip Technology Inc. DS51514A-page 5

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 (FAQ), 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

(FAE) 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

In addition, there is a Development Systems Information Line which lists the latest ver-

sions of Microchip's development systems software products. This line also provides

information on how customers can receive currently available upgrade kits.

The Development Systems Information Line numbers are:

1-800-755-2345 – United States and most of Canada

1-480-792-7302 – Other International Locations

Photodiode PGA PICtail™ Daughter Board User’s Guide

DS51514A-page 6 2004 Microchip Technology Inc.

NOTES:

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