TMPSNS-RTD1 Datasheet TMPSNS-RTD1 | P7-P9

Preface

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, “50mA, 100mA, and 150mA 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

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 Temperature

Detector (RTD) and accurately measure temperature. Up to two RTDs can be

connected. The RTDs are biased using constant current source and the output 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 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-Digital Converter (ADC) MCP3301. The ADC outputs serial data to the

PIC18F2550 using a Serial Peripheral Interface (SPI). The data 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

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P24 P25-P26

TMPSNS-RTD1

Mfr. #:

Buy TMPSNS-RTD1

Manufacturer:

Description:

Sensor Development Tools Temperature Sensor Development Tools RTD Temp Sensor Demo Brd

Lifecycle:

New from this manufacturer.

Delivery:

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TMPSNS-RTD1