TMPSNS-RTD1 Microchip Technology, TMPSNS-RTD1 Datasheet - Page 9

• Manufacturer Part Number: TMPSNS-RTD1
• Description: BOARD EVAL PT100 RTD TEMP SENSOR
• Manufacturer: Microchip Technology

Specifications of TMPSNS-RTD1

• Sensor Type: Temperature
• Interface: USB
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: MCP3301, MCP6S26, PIC18F2550
• Processor To Be Evaluated: MCP6S26, MCP3301, MCP6024, MCP41010, PIC18F2550, TC1071, MCP6002
• Data Bus Width: 12 bit
• Interface Type: USB
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Voltage - Supply: -
• Sensitivity: -
• Sensing Range: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Not applicable / Not applicable

1.1
1.2
1.3
© 2007 Microchip Technology Inc.
INTRODUCTION
WHAT IS THE PT100 RTD EVALUATION BOARD?
WHAT THE PT100 RTD EVALUATION BOARD KIT INCLUDES
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.
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.
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)
• Mini-USB Cable
- PT100 RTD Evaluation Board User’s Guide (DS51607)
Chapter 1. Product Overview
PT100 RTD EVALUATION
BOARD USER’S GUIDE
DS51607B-page 5