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PT100 RTD Evaluation Board User’s Guide

DS51607A-page 20

©

 2006 Microchip Technology Inc.

3

R18, R22,        
R23

RES 1.00K OHM 1/10W 1% 0805 
SMD

Panasonic - ECG

ERJ-6ENF1001V 

2

R19, R21

RES 10.0 OHM 1/8W 1% 0805 SMD Panasonic - ECG

ERJ-6ENF10R0V

1

R20

RES 619K OHM 1/8W 1% 0805 
SMD

Panasonic - ECG

ERJ-6ENF6193V

20

TP1<->TP20

TEST POINT PC COMPACT SMT

Keystone Electronics

®

5016

1

U1

Single-Ended, Rail-to-Rail I/O, Low 
Gain PGA

Microchip Technology Inc.

MCP6S26T-I/SL

1

U2

1 Mhz. Low Power Op-Amp

Microchip Technology Inc.

MCP6002-I/SN

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 Technology Inc.

PIC18F2550-I/SO

1

U5

13-Bit Differential Input, Low-Power 
A/D Converter with SPI Serial 
Interface

Microchip Technology Inc.

MCP3301-BI/SN

1

U6

50mA, 100mA and 150mA Adjust-
able CMOS LDOs with Shutdown

Microchip Technology Inc.

TC1071VCT

3

U8,U9,U10

Single/Dual Digital Potentiometer 
with SPI Interface

Microchip Technology Inc.

MCP41010-I/SN

1

Y1

CRYSTAL 20.0000 MHZ 18PF SMD Citizen America Corp.

CS20-20.000MABJ-UT

TABLE B-1:

BILL OF MATERIALS (CONTINUED)

Qty

Reference

Description

Manufacturer

Part Number

Summary of Contents for PT100 RTD

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

Page 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...

Page 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...

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

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

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

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

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

Page 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...

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

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

Page 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...

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

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

Page 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...

Page 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...

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

Page 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...

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