PT100 RTD
Evaluation Board
User’s Guide
© 2007 Microchip Technology Inc.
DS51607B
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and may be superseded by updates.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.
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, MPASM,
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 Technology Incorporated
in the U.S.A.
All other trademarks mentioned herein are property of their
respective companies.
Trademarks
The Microchip name and logo, the Microchip logo, Accuron,
dsPIC, KEELOQ, KEELOQ logo, microID, MPLAB, PIC, PICmicro, PICSTART, PRO MATE, rfPIC and SmartShunt are registered trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.
© 2007, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
Microchip received ISO/TS-16949:2002 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
DS51607B-page ii
© 2007 Microchip Technology Inc.
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
© 2007 Microchip Technology Inc.
DS51607B-page iii
PT100 RTD Evaluation Board User’s Guide
NOTES:
DS51607B-page iv
© 2007 Microchip Technology Inc.
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® IDE on-line help.
Select the Help menu, and then Topics to open a list of available on-line help files.
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 information 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.
© 2007 Microchip Technology Inc.
DS51607B-page 1
PT100 RTD Evaluation Board User’s Guide
CONVENTIONS USED IN THIS GUIDE
This manual uses the following documentation conventions:
DOCUMENTATION CONVENTIONS
Description
Arial font:
Italic characters
Represents
Referenced books
Emphasized text
A window
A dialog
A menu selection
A field name in a window or
dialog
A menu path
MPLAB® IDE User’s Guide
...is the only compiler...
the Output window
the Settings dialog
select Enable Programmer
“Save project before build”
A dialog button
A tab
A number in verilog format,
where N is the total number of
digits, R is the radix and n is a
digit.
A key on the keyboard
Click OK
Click the Power tab
4‘b0010, 2‘hF1
Italic Courier New
Sample source code
Filenames
File paths
Keywords
Command-line options
Bit values
Constants
A variable argument
Square brackets [ ]
Optional arguments
Curly brackets and pipe
character: { | }
Ellipses...
Choice of mutually exclusive
arguments; an OR selection
Replaces repeated text
#define START
autoexec.bat
c:\mcc18\h
_asm, _endasm, static
-Opa+, -Opa0, 1
0xFF, ‘A’
file.o, where file can be
any valid filename
mcc18 [options] file
[options]
errorlevel {0|1}
Initial caps
Quotes
Underlined, italic text with
right angle bracket
Bold characters
N‘Rnnnn
Text in angle brackets < >
Courier New font:
Plain Courier New
Represents code supplied by
user
DS51607B-page 2
Examples
File>Save
Press <Enter>, <F1>
var_name [,
var_name...]
void main (void)
{ ...
}
© 2007 Microchip Technology Inc.
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, “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
© 2007 Microchip Technology Inc.
DS51607B-page 3
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.
DS51607B-page 4
© 2007 Microchip Technology Inc.
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
© 2007 Microchip Technology Inc.
DS51607B-page 5
PT100 RTD Evaluation Board User’s Guide
NOTES:
DS51607B-page 6
© 2007 Microchip Technology Inc.
PT100 RTD EVALUATION
BOARD USER’S GUIDE
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 dissipation has to be considered. RTD resistance
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 current 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-bit
differential analog-to-digital converter. The data is transmitted 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.
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® Microcontroller
USB interface to PC
PC Software GUI
© 2007 Microchip Technology Inc.
DS51607B-page 7
PT100 RTD Evaluation Board User’s Guide
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.
PT100 RTD Evaluation Board
PICmicro®
Microcontroller
CH0
USB
PC
FIGURE 2-1:
RTD
ADC
Diff Amp
CH1
RTD
VREF
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.
VDD
VDD
SPI
SPI
SPI
CH0
3
CH1
PIC18F2550
SPI
SPI
3
FIGURE 2-2:
DS51607B-page 8
+
+
–
–
3
3
3
PGA
RTDs
MCP6S26
VREF
ADC
MCP3301
JP1
Differential
Amplifier
Simplified PT100 RTD Evaluation Board Schematic.
© 2007 Microchip Technology Inc.
Installation and Operation
2.3.2
Software Setup
1. Once the USB connection is secure, start the PT100RTD ThermalManagement.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 Channel 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 Local
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.
© 2007 Microchip Technology Inc.
DS51607B-page 9
PT100 RTD Evaluation Board User’s Guide
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 RTD can also be connected to measure
temperature in remote locations. The RTDs are biased using a constant current source.
In order to reduce self-heat due to power dissipation, the current magnitude is relatively
low. The small voltage across the RTD is amplified using the MCP6S26 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.
VDD
7 kΩ
SPI
10 kΩ Digital
Potentiometer
3
PNP Transistor
VREF
MCP6022
RTD (100Ω @°C)
1 kΩ
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.
RWIRE
RWIRE
LWIRE
2-wire RTD
DS51607B-page 10
LWIRE
RTD
RTD
FIGURE 2-5:
RWIRE
LWIRE
3-wire RTD
RTD
4-wire RTD
External RTD Connections.
© 2007 Microchip Technology Inc.
Installation and Operation
2.4.1.2
RTD SIGNAL CHAIN
The PGA is used to amplify the small voltage across the RTD. The reference input 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 × RF
G = 1 + ⎛⎝ -------------------------⎞⎠
R G + 20 Ω
Where:
RF = 10 kΩ
RG = 10 kΩ Digital Potentiometer
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.
© 2007 Microchip Technology Inc.
DS51607B-page 11
PT100 RTD Evaluation Board User’s Guide
NOTES:
DS51607B-page 12
© 2007 Microchip Technology Inc.
PT100 RTD EVALUATION
BOARD USER’S GUIDE
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
© 2007 Microchip Technology Inc.
DS51607B-page 13
PT100 RTD Evaluation Board User’s Guide
BOARD SCHEMATIC - PAGE 1
DS51607B-page 14
1
2
M
A.2
© 2007 Microchip Technology Inc.
Schematic and Layouts
BOARD SCHEMATIC - PAGE 2
M
A.3
© 2007 Microchip Technology Inc.
DS51607B-page 15
PT100 RTD Evaluation Board User’s Guide
BOARD - TOP SILK-SCREEN LAYER
:
A.4
BOARD EDGE
A.5
BOARD - TOP LAYER
DS51607B-page 16
© 2007 Microchip Technology Inc.
Schematic and Layouts
BOARD - BOTTOM SILK
A.7
BOARD - BOTTOM LAYER
:
A.6
BOARD EDGE
© 2007 Microchip Technology Inc.
DS51607B-page 17
PT100 RTD Evaluation Board User’s Guide
NOTES:
DS51607B-page 18
© 2007 Microchip Technology Inc.
PT100 RTD EVALUATION
BOARD USER’S GUIDE
Appendix B. Bill Of Materials (BOM)
TABLE B-1:
Qty
BILL OF MATERIALS
Reference
Description
Manufacturer
®
Part Number
10
C1, C2, C3, C4, CAP 1.0UF 10V CERAMIC X7R
C5, C6, C12,
0805
C14, C15, C16
Kemet Electronics
C0805C105K8RACTU
2
C7, C8
CAP 22PF 50V CERM CHIP 0805
SMD
Panasonic® - ECG
ECJ-2VC1H220J
1
C9
CAP CER 4700PF 100V X7R 10%
0805
TDK® Corporation
C2012X7R2A472K
6
C10, C11, C18, CAP .1UF 25V CERAMIC X7R 0805 Panasonic - ECG
C21, C26, C27
1
C13
10uF/16V CAP-SMT-ELCTRO
Value-Pro
SE10/16
1
D1
DIODE ZENER 4.3V 150MW
S-MINI 2P
Panasonic - SSG
MAZ80430ML
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
1
J2
USB A Male to Mini USB B 5 pin
Cable - 3ft phone:(316)522-2002
http://www.store.yahoo.com [email protected]
/ktusasys/ usbtomib 5pin
.html
1
J4
CONN TERM BLOCK 4POS 5MM
PCB
Phoenix Contact
1729034
2
JMP1, JMP2
3PIN, .100" Straight Male Headers
(Gold)
Value-Pro
7000-1X3SG-R
1
PCB
RoHS Compliant Bare PCB, PT100
RTD Evaluation Board
–
104-00096
2
Q1, Q2
IC AMP GP PNP 60V 0.8A SOT23
Fairchild Semiconductor®
BSR16
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
SMD
RR1220P-101-B-T5
2
R5, R6
ES 7.15K OHM 1/8W 1% 0805 SMD Panasonic - ECG
ERJ-6ENF7151V
7
R7, R8, R12,
R14, R16, R17,
R24
RES 4.99K OHM 1/8W 1% 0805
SMD
Panasonic - ECG
ERJ-6ENF4991V
2
R9, R10
RES 10.0K OHM 1/8W 1% 0805
SMD
Panasonic - ECG
ERJ-6ENF1002V
1
R11
RES 1.80M OHM 1/8W 1% 0805
SMD
Yageo® America
RC0805FR-071M8L
1
R13
PLATINUM RTD CHIP
TEMPERATURE SENSOR SMD
ENERCORP
enercorp.com
Model: PCS 1.1503.1
Note:
Susumu Co Ltd
ECJ-2VB1E104K
UX60-MB-5ST
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.
© 2007 Microchip Technology Inc.
DS51607B-page 19
Bill Of Materials (BOM)
TABLE B-1:
Qty
BILL OF MATERIALS (CONTINUED)
Reference
Description
Manufacturer
Part Number
1
R15
RES 35.7K OHM 1/8W 1% 0805
SMD
Panasonic - ECG
ERJ-6ENF3572V
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 Microchip Technology Inc.
Amps
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 Adjustable 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
Y1
CRYSTAL 20.0000 MHZ 18PF SMD Citizen America Corp.
1
Note:
CS20-20.000MABJ-UT
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.
© 2007 Microchip Technology Inc.
DS51607B-page 20
Bill Of Materials (BOM)
NOTES:
© 2007 Microchip Technology Inc.
DS51607B-page 21
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10/05/07
DS51607B-page 22
© 2007 Microchip Technology Inc.