Microchip Technology PT100 RTD Evaluation Board User guide

Download

PT100 RTD

Evaluation Board

User’s Guide

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.

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in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates.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 WARRANTIES 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 devices in life support and/or safety applications is entirely at the buyer’s risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights.

Trademarks

The Microchip name and logo, the Microchip logo, Accuron, dsPIC, K

EELOQ, KEELOQ logo, microID, MPLAB, PIC, PICm i-

cro, PICSTAR T, PRO MATE, rfPIC and SmartShunt are registered trademarks of Microchip T echnology Incorporated in the U.S.A. and other countries.

AmpLab, FilterLab, Linear Active Thermistor, Migratable Memory, MXDEV, MXLAB, SEEVAL, SmartSensor and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A.

Analog-for-the-Digital Age, Application Maestro, CodeGuard, dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB, In-Circuit Serial Programming, ICSP , ICEPIC, Mindi, MiWi, MP ASM, MPLAB Certified logo, MPLIB, MPLINK, PICkit, PICDEM, PICDEM.net, PICLAB, PICtail, PowerCal, PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Smart Serial, SmartTel, Total Endurance, UNI/O, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.

SQTP is a service mark of Microchip T echnology Incorporated in the U.S.A.

All other trademarks mentioned herein are property of their respective companies.

Printed on recycled paper.

Microchip received ISO/TS-16949:2002 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and T empe, Arizona; Gresham, Oregon and design centers in California and India. The Company’s quality system processes and procedures are for its PIC devices, Serial EEPROMs, microperipherals, nonvolatile memo ry and analog products. In addition, Microchip’s quality system for the desig n and manufacture of development systems is ISO 9001:2000 certified.

MCUs and dsPIC® DSCs, KEELOQ

code hopping

PT100 RTD EVALUATION

BOARD USER ’S GUIDE

Table of Contents

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

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

Document Layout..................................................................................................1

Conventions Used in this Guide............................................................................ 2

Recommended Reading........................................................................................3

The Microchip Web Site........................................................................................3

Customer Support.................................................................................................4

Document Revision History................................................................................... 4

Chapter 1. Product Overview ....................................................................................... 5

1.1 Introduction .....................................................................................................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

2.4 Functional Description ..................................................................................10

Appendix A. Schematic and Layouts ........................................................................13

A.1 Introduction ..................................................................................................13

A.2 Board Schematic - Page 1 ........................................................................14

A.3 Board Schematic - Page 2 ........................................................................15

A.4 Board - Top Silk-screen Layer ...................................................................16

A.5 Board - Top Layer ......................................................................................16

A.6 Board - Bottom Silk ..................................................................................17

A.7 Board - Bottom Layer ................................................................................. 17

Appendix B. Bill Of Materials (BOM) .........................................................................19

Worldwide Sales and Service ....................................................................................22

PT100 RTD Evaluation Board User’s Guide

NOTES:

PT100 RTD EVALUATION

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

IDE on-line help.

INTRODUCTION

This chapter contains general information that will be useful to know before using the PT100 RTD Evaluation Board. Items discussed in this chapter include:

• Document Layout

• Conventions Used in this Guide

• Recommended Reading

• The Microchip Web Site

• Customer Support

• Document Revision History

DOCUMENT LAYOUT

This document describes how to use the PT100 RTD Evaluation Board as a development tool. The manual layout is as follows:

• Chapter 1. “Product Overview” – Important info rmation about the PT100 RTD Evaluation Board.

• Chapter 2. “Installation and Operation” – This chapter includes a detailed description of each function of the demo board and instructions for how to begin using the 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 Evaluation Board.

PT100 RTD Evaluation Board User’s Guide

CONVENTIONS USED IN THIS GUIDE

This manual uses the following documentation conventions:

DOCUMENTATION CONVENTIONS

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

Underlined, italic text with right angle bracket

Bold characters A dialog button Click OK

N‘Rnnnn A number in verilog format,

Text in angle brackets < > A key on the keyboard Press <Enter>, <F1>

Courier New font:

Plain Courier New Sample source code #define START

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

Square brackets [ ] Optional arguments mcc18 [options] file

Curly brackets and pipe character: { | }

Ellipses... Replaces repeated text var_name [,

A menu path File>Save

A tab Click the Power tab

where N is the total number of digits, R is the radix and n is a digit.

Filenames autoexec.bat File paths c:\mcc18\h Keywords _asm, _endasm, static Command-line options -Opa+, -Opa- Bit values 0, 1 Constants 0xFF, ‘A’

Choice of mutually exclusive arguments; an OR selection

Represents code supplied by user

“Save project before build”

4‘b0010, 2‘hF1

any valid filename

[options] errorlevel {0|1}

var_name...] void main (void)

{ ... }

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 co ntains 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

PT100 RTD Evaluation Board User’s Guide

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

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

DOCUMENT REVISION HISTORY

Revision B (December 2007)

• Changed Information Related to the GUI.

• Updated Figure 2-3 and Figure 2-6.

• Updated Section 2.3.2 “Software Setup”.

• Add disclaimer to Bill of Materials regarding RoHS-Compliant part numbers.

Revision A (May 2006)

• Initial Release of this Document.

PT100 RTD EVALUATION

BOARD USER ’S GUIDE

Chapter 1. Product Overview

1.1 INTRODUCTION

This chapter provides an overview of the PT100 RTD Evaluation Board and covers the following topics:

• What is the PT100 RTD Evaluation Board?

• What the PT100 RTD Evaluation Board kit includes.

1.2 WHAT IS THE PT100 RTD EVALUATION BOARD?

The PT100 RTD Evaluation Board demonstrates how to bias a Resistive T emperature Detector (RTD) and accurately measure temperature. Up to two RTDs can be connected. The RTDs are biased using const ant current source and the outpu t voltage is scaled using a difference amplifier. In addition to the difference amplifier, a multiple input channel Programmable Gain Amplifier (PGA) MCP6S26 is used to digita lly switch between RTDs and increase the scale up to 32 times.

The output of the difference amplifier is connected to a 12-bit differenti al Analog-to-Digital Converter (ADC) MCP3301. The ADC outputs serial data to the PIC18F2550 using a Serial Peripheral Interface (SPI). The dat a is transmitted to a PC using a USB interface.

A PC Software Graphical User Interface (GUI) is used to acquire the data. The acquired data is graphed as a real-time stripchart display. In addition, the user can select input channels, acquisition interval, and stripchart display buffer size.

1.3 WHAT THE PT100 RTD EVALUATION BOARD KIT INCLUDES

This PT100 RTD Evaluation Board Kit includes:

• The PT100 RTD Evaluation Board (102-00096)

• PIC18F2550 Firmware (USB)

• PC Software GUI

• Analog and Interface Products Demonstration Boards CD-ROM (DS21912)

- PT100 RTD Evaluation Board User’s Guide (DS51607)

• Mini-USB Cable

PT100 RTD Evaluation Board User’s Guide

NOTES:

Chapter 2. Installation and Operation

2.1 INTRODUCTION

The PT100 RTD Evaluation Board allows the user to evaluate Microchip’s solution to accurately measure temperature using RTD. When biasing RTDs to measure temperature, self-heat due to power dissip ation has to be consider ed. R TD resist ance availability typically ranges from 100Ω to 5,000Ω. In order to measure the output voltage across the RTD over a wide temperature range, the biasing curr ent has to be relatively high. This higher current causes more power dissipation through heat and skews the temperature reading. Microchip’s solution to this challenge is to use the MCP6S26 Programmable Gain Amplifier (PGA) to increase the sensor dynamic output range and increase measurement resolution while significantly reducing the biasing current magnitude.

This board consists of a surface mount RTD to measure the PCB temperature and an external RTD connector. 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. The multiple input channel PGA adds gain programmability into the analog circuit. The multiple input channels are used to switch between RTDs and the gain is used to increase the sensor dynamic range.

The PGA output is connected to a differential amplifier circuit which allows the user to scale the sensor output. The differential output is digitized using an MCP3301 12-b it differential analog-to-digit al converter . The data is tran smitted to the PC using the USB interface. A PC Software Graphical User Interface (GUI) is used to obtain and display the data in real-time.

PT100 RTD EVALUATION

BOARD USER ’S GUIDE

2.2 FEATURES

The PT100 RTD Evaluation Board has the following features:

• A surface mount PT100 RTD

• External (2, 3, or 4-wire) RTD connector

• Gain and input channel programmability using MCP6S26 PGA

• MCP3301 12-Bit + sign ADC

• MCP41010 10 kΩ Digital Potentiometer

• PIC18F2550 PICmicro

• USB interface to PC

• PC Software GUI

Microcontroller

PT100 RTD Evaluation Board User’s Guide

USB

PICmicro

Microcontroller

REF

ADC

CH1

CH0

Diff Amp

PT100 RTD Evaluation Board

RTD

REF

ADC

CH1

CH0

RTDs

PIC18F2550

SPI

MCP3301

SPI

Differential

SPI

PGA

MCP6S26

SPI

JP1

Amplifier

–

2.3 GETTING STARTED

This section describes how to quickly configure the PT100 RTD Evaluation Board. A simplified block diagram of the configuration is provided in Figure 2-1.

FIGURE 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.

FIGURE 2-2: Simplified PT100 RTD Evaluation Board Schematic.

Installation and Operation

2.3.2 Software Setup

1. Once the USB connection is secure, start the PT100RTD ThermalManage-

ment.EXE file and select Enable Macro. When the software starts, the

Configuration window will be displayed, as shown in Figure 2-3.

FIGURE 2-3: PC Software GUI.

2. Select Enable/Disable for CH0 or CH1 (Channel 0 and Cha nnel 1, respectively).

3. Select PGA gain, ADC sampling rate, and sampling buffer size for the

stripchart display.

4. Use the scroll bar to adjust the differential amplifier gain and Remote or Loca l

RTD bias currents.

5. Click start to start acquisition, stop to stop acquisition. Reset to Clear buffer.

6. Adjust the digital potentiometer positions to select the differential amplifier gain

and trim the current sources for the local and external RTDs.

7. Double-click the chart. The Chart Configuration window will be displayed.

PT100 RTD Evaluation Board User’s Guide

REF

RTD (100Ω @°C)

SPI

7kΩ

10 kΩ Digital Potentiometer

PNP Transistor

MCP6022

1kΩ

RTD

WIRE

RTD

WIRE

RTD

WIRE

2-wire RTD 4-wire RTD3-wire RTD

2.4 FUNCTIONAL DESCRIPTION

2.4.1 The PT100 RTD Evaluation Board

The PT100 RTD Evaluation Board uses surface mount RTD to measure temperature. An external 2, 3, or 4-wire PT100 R TD can also be connected to measure temperature in remote locations. The RTDs are b iased using a constant current source. In order to reduce self-heat due to power dissip ation, the current magnitude is relatively low. The sm all voltage across the RTD is amplified using the MCP6S2 6 PGA. The PGA allows the user to digitally program the amplifier gain and increase the sensor output range. The output of the PGA is scaled using a differential amplifier. The differential amplifier drives a 12-Bit + sign differential ADC, MCP3301. The digital data is read using PIC18F2550 and transmitted to PC using a USB interface.

2.4.1.1 THE RTD BIASING CONSTANT CURRENT SOURCE

The constant current source uses a reference voltage, one amplifier, and a PNP transistor, as shown in Figure 2-4.

FIGURE 2-4: Constant Current Source.

The amplifier maintains constant voltage at the transistor emitter terminal. Therefore, the emitter and collector currents are constant. The collector current biases the RTD. The biasing current can be fine tuned by adjusting the 10 kΩ digital potentiometer using the GUI. A 100Ω, 0.1% resistor is available for system calibration at 0°C (RTD resistance at 0°C is 100Ω). This resistor can be jumped using JP1.

When connecting an external PT100 RTD, connect JP2 to External Position.

FIGURE 2-5: External RTD Connections.

Installation and Operation

RG20Ω+

------------------------ -

⎝⎠

⎛⎞

Where:

= 10 kΩ

= 10 kΩ Digital Potentiometer

2.4.1.2 RTD SIGNAL CHAIN The PGA is used to amplify the small voltage across the R TD. The reference inp ut pin

of the PGA is connected to the RTD negative terminal and Channel 0 and Channel 1 are connected to the positive terminals of each RTD. This allows only the voltage across the sensor to be amplified. The PGA has a gain error of ±1% (max.) for gains greater than 1 V/V. Refer to the datasheet (DS21685) for details.

The RTD negative terminal and the PGA output are connected 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 GRAPHICAL USER INTERFACE The GUI uses the USB port to communicate with the PIC18F2550.

FIGURE 2-6: Hardware Status

When start is clicked, the macro double checks hardware availability before starting the acquisition.

All user options such as Sampling time, Stripchart buffer size, Digi. Pot Positions, or PGA Chn/Gain setup can be changed during acquisition.

PT100 RTD Evaluation Board User’s Guide

NOTES:

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 - Top Layer

• Board - Silk-screen Layer

• Board - Bottom Layer

PT100 RTD EVALUATION

BOARD USER ’S GUIDE

PT100 RTD Evaluation Board User’s Guide

A.2 BOARD SCHEMATIC - PAGE 1

A.3 BOARD SCHEMATIC - PAGE 2

Schematic and Layouts

PT100 RTD Evaluation Board User’s Guide

:

BOARD EDGE

A.4 BOARD - TOP SILK-SCREEN LAYER

A.5 BOARD - TOP LAYER

A.6 BOARD - BOTTOM SILK

:

BOARD EDGE

Schematic and Layouts

A.7 BOARD - BOTTOM LAYER

PT100 RTD Evaluation Board User’s Guide

NOTES:

PT100 RTD EVALUATION

BOARD USER ’S GUIDE

Appendix B. Bill Of Materials (BOM)

TABLE B-1: BILL OF MATERIALS

Qty Reference Description Manufacturer Part Number

10 C1, C2, C3, C4,

C5, C6, C12, C14, C15, C16

2 C7, C8 CAP 22PF 50V CERM CHIP 0805

1 C9 CAP CER 4700PF 100V X7R 10%

6 C10, C11, C18,

C21, C26, C27 1 C13 10uF/16V CAP-SMT-ELCTRO Value-Pro SE10/16 1 D1 DIODE ZENER 4.3V 150MW

1 D2 MA3X786E0LCT-ND Panasonic - SSG MA3X786E0L 0 J1 Do Not Populated Header – – 1 J2 CONN RECEPT MINI USB2.0 5POS Hirose Electronic Co Ltd UX60-MB-5ST 1 J2 USB A Male to Mini USB B 5 pin

1 J4 CONN TERM BLOCK 4POS 5MM

2 JMP1, JMP2 3PIN, .100" Straight Male Headers

1 PCB RoHS Compliant Bare PCB, PT100

2 Q1, Q2 IC AMP GP PNP 60V 0.8A SOT23 Fairchild Semiconductor 2 R1, R2 RES 100 OHM 1/8W 1% 0805 SMD Panasonic - ECG ERJ-6ENF1000V 1 R3 RES 20.0 OHM 1/8W 1% 0805 SMD Panasonic - ECG ERJ-6ENF20R0V 1 R4 RES 100 OHM 1/10W 0.1% 0805

2 R5, R6 ES 7.15K OHM 1/8W 1% 0805 SMD Panasonic - ECG ERJ-6ENF7151V 7 R7, R8, R12,

R14, R16, R17,

R24 2 R9, R10 RES 10.0K OHM 1/8W 1% 0805

1 R11 RES 1.80M OHM 1/8W 1% 0805

1 R13 PLATINUM RTD CHIP

Note: The components listed in this Bill of Materials are representative of the PCB assembly. The

released BOM used in manufacturing uses all RoHS-compliant components.

CAP 1.0UF 10V CERAMIC X7R 0805

SMD

0805 CAP .1UF 25V CERAMIC X7R 0805 Panasonic - ECG ECJ-2VB1E104K

S-MINI 2P

Cable - 3ft phone:(316)522-2002

PCB

(Gold)

RTD Evaluation Board

SMD

RES 4.99K OHM 1/8W 1% 0805 SMD

SMD

TEMPERATURE SENSOR SMD

Kemet® Electronics C0805C105K8RACTU

Panasonic® - ECG ECJ-2VC1H220J

TDK

Corporation C2012X7R2A472K

Panasonic - SSG MAZ80430ML

http://www.store.yahoo.com /ktusasys/ usbtomib 5pin .html

Phoenix Contact 1729034

Value-Pro 7000-1X3SG-R

– 104-00096

Susumu Co Ltd RR1220P-101-B-T5

Panasonic - ECG ERJ-6ENF4991V

Panasonic - ECG ERJ-6ENF1002V

Yageo

ENERCORP enercorp.com

America RC0805FR-071M8L

sales@ktusasys.com

BSR16

Model: PCS 1.1503.1

Bill Of Materials (BOM)

TABLE B-1: BILL OF MATERIALS (CONTINUED)

Qty Reference Description Manufacturer Part Number

1 R15 RES 35.7K OHM 1/8W 1% 0805

SMD

3 R18, R22,

R23 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

20 TP1<->TP20 TEST POINT PC COMPACT SMT Keystone Electronics 1 U1 Single-Ended, Rail-to-Rail I/O, Low

1 U2 1 Mhz. Low Power Op-Amp Microchip Technology Inc. MCP6002-I/SN 1 U3 Rail-to-Rail Input/Output, 10 MHz Op

1 U4 28/40/44-Pin, High-Performance,

1 U5 13-Bit Differential Input, Low-Power

1 U6 50mA, 100mA and 150mA Adjust-

3 U8,U9,U10 Single/Dual Digital Potentiometer

1 Y1 CRYSTAL 20.0000 MHZ 18PF SMD Citizen America Corp. CS20-20.000MABJ-UT

RES 1.00K OHM 1/10W 1% 0805 SMD

SMD

Gain PGA

Amps

Enhanced Flash, USB microcontrollers with nanoWatt Technology

A/D Converter with SPI Serial Interface

able CMOS LDOs with Shutdown

with SPI Interface

Note: The components listed in this Bill of Materials are representative of the PCB assembly. The

released BOM used in manufacturing uses all RoHS-compliant components.

Panasonic - ECG ERJ-6ENF3572V

Panasonic - ECG ERJ-6ENF1001V

Panasonic - ECG ERJ-6ENF6193V

Microchip Technology Inc. MCP6S26T-I/SL

Microchip Technology Inc. MCP6024-I/SL

Microchip Technology Inc. PIC18F2550-I/SO

Microchip Technology Inc. MCP3301-BI/SN

Microchip Technology Inc. TC1071VCT

Microchip Technology Inc. MCP41010-I/SN

5016

NOTES:

Bill Of Materials (BOM)

WORLDWIDE SALES AND SERVICE

AMERICAS

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.com

Atlanta

Duluth, GA Tel: 678-957-9614 Fax: 678-957-1455

Boston

Westborough, MA Tel: 774-760-0087 Fax: 774-760-0088

Chicago

Itasca, IL Tel: 630-285-0071 Fax: 630-285-0075

Dallas

Addison, TX Tel: 972-818-7423 Fax: 972-818-2924

Detroit

Farmington Hills, MI Tel: 248-538-2250 Fax: 248-538-2260

Kokomo

Kokomo, IN Tel: 765-864-8360 Fax: 765-864-8387

Los Angeles

Mission Viejo, CA Tel: 949-462-9523 Fax: 949-462-9608

Santa Clara

Santa Clara, CA Tel: 408-961-6444 Fax: 408-961-6445

Toronto

Mississauga, Ontario, Canada Tel: 905-673-0699 Fax: 905-673-6509

ASIA/PACIFIC

Asia Pacific Office

Suites 3707-14, 37th Floor Tower 6, The Gateway Harbour City, Kowloon Hong Kong Tel: 852-2401-1200 Fax: 852-2401-3431

Australia - Sydney

Tel: 61-2-9868-6733 Fax: 61-2-9868-6755

China - Beijing

Tel: 86-10-8528-2100 Fax: 86-10-8528-2104

China - Chengdu

Tel: 86-28-8665-5511 Fax: 86-28-8665-7889

China - Fuzhou

Tel: 86-591-8750-3506 Fax: 86-591-8750-3521

China - Hong Kong SAR

Tel: 852-2401-1200 Fax: 852-2401-3431

China - Nanjing

Tel: 86-25-8473-2460 Fax: 86-25-8473-2470

China - Qingdao

Tel: 86-532-8502-7355 Fax: 86-532-8502-7205

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: 86-755-8203-1760

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: 86-29-8833-7252 Fax: 86-29-8833-7256

ASIA/PACIFIC

India - Bangalore

Tel: 91-80-4182-8400 Fax: 91-80-4182-8422

India - New Delhi

Tel: 91-11-4160-8631 Fax: 91-11-4160-8632

India - Pune

Tel: 91-20-2566-1512 Fax: 91-20-2566-1513

Japan - Yokohama

Tel: 81-45-471- 6166 Fax: 81-45-471-6122

Korea - Daegu

Tel: 82-53-744-4301 Fax: 82-53-744-4302

Korea - Seoul

Tel: 82-2-554-7200 Fax: 82-2-558-5932 or 82-2-558-5934

Malaysia - Kuala Lumpur

Tel: 60-3-6201-9857 Fax: 60-3-6201-9859

Malaysia - Penang

Tel: 60-4-227-8870 Fax: 60-4-227-4068

Philippines - Manila

Tel: 63-2-634-9065 Fax: 63-2-634-9069

Singapore

Tel: 65-6334-8870 Fax: 65-6334-8850

Taiwan - Hsin Chu

Tel: 886-3-572-9526 Fax: 886-3-572-6459

Taiwan - Kaohsiung

Tel: 886-7-536-4818 Fax: 886-7-536-4803

Taiwan - Taipei

Tel: 886-2-2500-6610 Fax: 886-2-2508-0102

Thailand - Bangkok

Tel: 66-2-694-1351 Fax: 66-2-694-1350

EUROPE

Austria - Wels

Tel: 43-7242-2244-39 Fax: 43-7242-2244-393

Denmark - Copenhagen

Tel: 45-4450-2828 Fax: 45-4485-2829

France - Paris

Tel: 33-1-69-53-63-20 Fax: 33-1-69-30-90-79

Germany - Munich

Tel: 49-89-627-144-0 Fax: 49-89-627-144-44

Italy - Milan

Tel: 39-0331-742611 Fax: 39-0331-466781

Netherlands - Drunen

Tel: 31-416-690399 Fax: 31-416-690340

Spain - Madrid

Tel: 34-91-708-08-90 Fax: 34-91-708-08-91

UK - Wokingham

Tel: 44-118-921-5869 Fax: 44-118-921-5820

10/05/07

Microchip Technology PT100 RTD Evaluation Board User guide

Specifications and Main Features

Frequently Asked Questions

User Manual

Preface

INTRODUCTION

DOCUMENT LAYOUT

CONVENTIONS USED IN THIS GUIDE

RECOMMENDED READING

THE MICROCHIP WEB SITE

CUSTOMER SUPPORT

DOCUMENT REVISION HISTORY

Chapter 1. Product Overview

1.1 INTRODUCTION

1.2 WHAT IS THE PT100 RTD EVALUATION BOARD?

1.3 WHAT THE PT100 RTD EVALUATION BOARD KIT INCLUDES

Chapter 2. Installation and Operation

2.1 INTRODUCTION

2.2 FEATURES

2.3 GETTING STARTED

2.4 FUNCTIONAL DESCRIPTION

Appendix A. Schematic and Layouts

A.1 INTRODUCTION

A.2 BOARD SCHEMATIC - PAGE 1

A.3 BOARD SCHEMATIC - PAGE 2

A.4 BOARD - TOP SILK-SCREEN LAYER

A.5 BOARD - TOP LAYER

A.6 BOARD - BOTTOM SILK

A.7 BOARD - BOTTOM LAYER

Appendix B. Bill Of Materials (BOM)

WORLDWIDE SALES AND SERVICE