background image

Preface

©

 2006 Microchip Technology Inc.

DS51607A-page 3

RECOMMENDED READING

This user's guide describes how to use the PT100 RTD Evaluation Board. The 
following Microchip documents are available on our web site (www.microchip.com) and 
recommended as supplemental reference resources.

MCP6S26 Data Sheet, 

“Single-Ended, Rail-toRail I/O, Low Gain PGA“ 

(DS21117)

This data sheet provides detailed information regarding the MCP6S26 device.

MCP3301 Data Sheet, 

“13-Bit Differential Input, Low Power A/D Converter w/SPI 

Serial Interface”

 (DS21700)

This data sheet provides detailed information regarding the MCP3301 device.

MCP602X Data Sheet, 

“Rail-to-Rail Input/Output, 10 MHz Op Amps“ (

DS21685)

This data sheet provides detailed information regarding the MCP602X devices.

MCP41010 Data Sheet, 

“Single/Dual Digital Potentiometer with SPI Interface“

 

(DS11195)

This data sheet provides detailed information regarding the MCP41XXX devices.

PIC18F2455/2550/4455/4550 Data Sheet, 

“28/40/44-Pin, High-Performance,

Enhanced Flash, USB Microcontrollers with nanoWatt Technology“

 (DS39632)

This data sheet provides detailed information regarding the 
PIC18F2455/2550/4455/4550 devices.

TC1070/TC1071/TC1187 Data Sheet, 

“50 mA,  100 mA,  and  150 mA  Adjustable 

CMOS LDOs w/Shutdown“

 (DS21353)

This data sheet provides detailed information regarding the TC1070/TC1071/TC1187 
devices.

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

Содержание PT100 RTD

Страница 1: ...2006 Microchip Technology Inc DS51607A PT100 RTD Evaluation Board User s Guide...

Страница 2: ...k of Microchip Technology Incorporated in the U S A All other trademarks mentioned herein are property of their respective companies 2006 Microchip Technology Incorporated Printed in the U S A All Rig...

Страница 3: ...n 5 1 2 What is the PT100 RTD Evaluation Board 5 1 3 What the PT100 RTD Evaluation Board Kit Includes 5 Chapter 2 Installation and Operation 7 2 1 Introduction 7 2 2 Features 7 2 3 Getting Started 8 2...

Страница 4: ...PT100 RTD Evaluation Board User s Guide DS51607A page iv 2006 Microchip Technology Inc NOTES...

Страница 5: ...board Appendix A Schematic and Layouts Shows the schematic and layout diagrams for the PT100 RTD Evaluation Board Appendix B Bill Of Materials BOM Lists the parts used to build the PT100 RTD Evaluatio...

Страница 6: ...d characters A dialog button Click OK A tab Click the Power tab N Rnnnn A number in verilog format where N is the total number of digits R is the radix and n is a digit 4 b0010 2 hF1 Text in angle bra...

Страница 7: ...nced Flash USB Microcontrollers with nanoWatt Technology DS39632 This data sheet provides detailed information regarding the PIC18F2455 2550 4455 4550 devices TC1070 TC1071 TC1187 Data Sheet 50 mA 100...

Страница 8: ...E 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 h...

Страница 9: ...able Gain Amplifier PGA MCP6S26 is used to digitally switch between RTDs and increase the scale up to 32 times The output of the difference amplifier is connected to a 12 bit differential Analog to Di...

Страница 10: ...PT100 RTD Evaluation Board User s Guide DS51607A page 6 2006 Microchip Technology Inc NOTES...

Страница 11: ...face mount RTD to measure the PCB temperature In addition the user can connect and measure an external leaded RTD 2 3 or 4 Wire and configure the corresponding jumper to remotely measure temperature T...

Страница 12: ...2 1 PT100 RTD Evaluation Board Simplified Block Diagram 2 3 1 Hardware Setup 1 Connect the USB cable to PC 2 To measure PCB temperature connect JP1 to Local RTD position and JP2 to RTD position FIGUR...

Страница 13: ...ication as shown in Figure 2 3 FIGURE 2 3 Microsoft Excel Based GUI 2 Select Enable Disable for CH0 or CH1 Channel 0 and Channel 1 respectively 3 Select PGA gain ADC sampling rate and sampling buffer...

Страница 14: ...ifferential ADC MCP3301 The digital data is read using PIC18F2550 and transmitted to PC using a USB interface 2 4 1 1 THE CONSTANT CURRENT SOURCE The constant current source uses a reference voltage o...

Страница 15: ...ted to the differential amplifier The differential amplifier scales the PGA output The difference amplifier gain is shown in Equation 2 1 EQUATION 2 1 DIFFERENCE AMPLIFIER GAIN 2 4 1 3 THE GUI The GUI...

Страница 16: ...PT100 RTD Evaluation Board User s Guide DS51607A page 12 2006 Microchip Technology Inc NOTES...

Страница 17: ...p Technology Inc DS51607A page 13 Appendix A Schematic and Layouts A 1 INTRODUCTION This appendix contains the following schematics and layouts for the PT100 RTD Evaluation Board Board Schematic Board...

Страница 18: ...PT100 RTD Evaluation Board User s Guide DS51607A page 14 2006 Microchip Technology Inc A 2 BOARD SCHEMATIC PAGE 1 M 2 1...

Страница 19: ...Schematic and Layouts 2006 Microchip Technology Inc DS51607A page 15 A 3 BOARD SCHEMATIC PAGE 2 M...

Страница 20: ...PT100 RTD Evaluation Board User s Guide DS51607A page 16 2006 Microchip Technology Inc A 4 BOARD TOP SILK SCREEN LAYER A 5 BOARD TOP LAYER BOARD EDGE BOARD EDGE...

Страница 21: ...Schematic and Layouts 2006 Microchip Technology Inc DS51607A page 17 A 6 BOARD BOTTOM SILK A 7 BOARD BOTTOM LAYER...

Страница 22: ...PT100 RTD Evaluation Board User s Guide DS51607A page 18 2006 Microchip Technology Inc NOTES...

Страница 23: ...SB B 5 pin Cable 3ft phone 316 522 2002 http www store yahoo com ktusasys usbtomib 5pin html sales ktusasys com 1 J4 CONN TERM BLOCK 4POS 5MM PCB Phoenix Contact 1729034 2 JMP1 JMP2 3PIN 100 Straight...

Страница 24: ...1 U3 Rail to Rail Input Output 10 MHz Op Amps Microchip Technology Inc MCP6024 I SL 1 U4 28 40 44 Pin High Performance Enhanced Flash USB microcontrollers with nanoWatt Technology Microchip Technolog...

Страница 25: ...Bill Of Materials BOM 2006 Microchip Technology Inc DS51607A page 21 NOTES...

Страница 26: ...3 China Shenzhen Tel 86 755 8203 2660 Fax 86 755 8203 1760 China Shunde Tel 86 757 2839 5507 Fax 86 757 2839 5571 China Wuhan Tel 86 27 5980 5300 Fax 86 27 5980 5118 China Xian Tel 86 29 8833 7250 Fax...

Отзывы: