Microchip Technology PT100 RTD Evaluation Board User guide

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in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates.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.
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.
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.
© 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 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
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 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.
© 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 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)
{ ... }
DS51607B-page 2 © 2007 Microchip Technology Inc.

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 Inp ut, Low Power A/D Con ver ter 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.
Preface

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
© 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 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
© 2007 Microchip Technology Inc. DS51607B-page 5
PT100 RTD Evaluation Board User’s Guide
NOTES:
DS51607B-page 6 © 2007 Microchip Technology Inc.

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
© 2007 Microchip Technology Inc. DS51607B-page 7
PT100 RTD Evaluation Board User’s Guide
PC
USB
PICmicro
®
Microcontroller
V
REF
ADC
CH1
CH0
Diff Amp
PT100 RTD Evaluation Board
RTD
RTD
V
REF
ADC
CH1
CH0
RTDs
PIC18F2550
3
SPI
MCP3301
3
SPI
Differential
V
DD
V
DD
3
SPI
3
SPI
PGA
MCP6S26
3
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.
DS51607B-page 8 © 2007 Microchip Technology Inc.
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.
© 2007 Microchip Technology Inc. DS51607B-page 9
PT100 RTD Evaluation Board User’s Guide
V
REF
RTD (100Ω @°C)
V
DD
3
SPI
7kΩ
10 kΩ Digital Potentiometer
PNP Transistor
MCP6022
1kΩ
RTD
R
WIRE
L
WIRE
RTD
R
WIRE
L
WIRE
RTD
R
WIRE
L
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.
DS51607B-page 10 © 2007 Microchip Technology Inc.
Installation and Operation
G1
2R
F
×
RG20Ω+
------------------------ -
⎝⎠
⎛⎞
+=
Where:
R
F
= 10 kΩ
R
G
= 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.
© 2007 Microchip Technology Inc. DS51607B-page 11
PT100 RTD Evaluation Board User’s Guide
NOTES:
DS51607B-page 12 © 2007 Microchip Technology Inc.

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
© 2007 Microchip Technology Inc. DS51607B-page 13
PT100 RTD Evaluation Board User’s Guide
M
2
1

A.2 BOARD SCHEMATIC - PAGE 1

DS51607B-page 14 © 2007 Microchip Technology Inc.

A.3 BOARD SCHEMATIC - PAGE 2

M
Schematic and Layouts
© 2007 Microchip Technology Inc. DS51607B-page 15
PT100 RTD Evaluation Board User’s Guide
:
BOARD EDGE

A.4 BOARD - TOP SILK-SCREEN LAYER

A.5 BOARD - TOP LAYER

DS51607B-page 16 © 2007 Microchip Technology Inc.

A.6 BOARD - BOTTOM SILK

:
BOARD EDGE
Schematic and Layouts

A.7 BOARD - BOTTOM LAYER

© 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: 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
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
© 2007 Microchip Technology Inc. DS51607B-page 19
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
© 2007 Microchip Technology Inc. DS51607B-page 20
NOTES:
Bill Of Materials (BOM)
© 2007 Microchip Technology Inc. DS51607B-page 21

WORLDWIDE SALES AND SERVICE

AMERICAS
Corporate Office
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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
DS51607B-page 22 © 2007 Microchip Technology Inc.
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