© 2009 Microchip Technology Inc. DS51793A
MCP3421 SOT23-6
Evaluation Board
Users Guide
DS51793A-page ii © 2009 Microchip Technology Inc.
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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
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MCP3421 SOT23-6 EVALUATION
BOARD USERS GUIDE
© 2009 Microchip Technology Inc. DS51793A-page iii
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.................................................................................................3
Document Revision History...................................................................................4
Chapter 1. Quick Start Instructions
1.1 Introduction .....................................................................................................5
1.2 Description of the MCP3421 SOT23-6 Evaluation Board ..............................5
1.3 Getting Started with PICkit Serial Analyzer ....................................................7
Appendix A. Schematic and Layouts
A.1 Introduction ..................................................................................................23
A.2 Board – Schematic .......................................................................................24
A.3 Board – Top Layer .......................................................................................25
A.4 Board – Top Metal Layer .............................................................................26
A.5 Board – Bottom Metal Layer ........................................................................27
Appendix B. Bill Of Materials (BOM)
Worldwide Sales and Service ....................................................................................30
MCP3421 SOT23-6 Evaluation Board User’s Guide
DS51793A-page iv © 2009 Microchip Technology Inc.
NOTES:
MCP3421 SOT23-6 EVALUATION
BOARD USERS GUIDE
© 2009 Microchip Technology Inc. DS51793A-page 1
Preface
INTRODUCTION
This chapter contains general information that will be useful to know before using the
MCP3421 SOT23-6 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 de scr ib es ho w to us e th e M CP3421 SOT2 3- 6 Eva lua tio n Boa rd as a
development tool to emulate and debug firmware on a t arget board. The manual layout
is as follows:
Chapter 1. “Quick St art Instructions – this chapter provides an over view of the
MCP3421 SOT23-6 Evaluation Board and instructions on how to ob tain the ADC
conversion results using the PICKit Serial Analyzer.
Appendix A. “Schematic and Layout s – shows the schematic and layout
diagrams for the MC P3 42 1 SOT 2 3- 6 Eva lua tio n Boar d.
Appendix B. “Bill Of Materials (BOM)” – lists the parts used to build the
MCP3421 SOT23-6 Evaluation Board.
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.
MCP3421 SOT23-6 Evaluation Board User’s Guide
DS51793A-page 2 © 2009 Microchip Technology Inc.
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 “Save project before build”
Underlined, italic text with
right angle bracket A menu path File>Save
Bold characters A dialog button Click OK
A tab Click the Power tab
N‘Rnnnn A number in verilog format,
where N is the total number of
digits, R is the radix and n is a
digit.
4‘b0010, 2‘hF1
Text in angle brackets < > A key on the keyboard Press <Enter>, <F1>
Courier New font:
Plain Courier New Sample source code #define START
Filenames autoexec.bat
File paths c:\mcc18\h
Keywords _asm, _endasm, static
Command-li n e op ti o ns -Opa+, -Opa-
Bit values 0, 1
Constants 0xFF, ‘A’
Italic Courier New A variable argument file.o, where file can be
any valid filena me
Square brackets [ ] Optional arguments mcc18 [options] file
[options]
Curly brackets and pipe
character: { | } Choice of mutually exclusive
arguments; an OR selection errorlevel {0|1}
Ellipses... Replaces repeated text var_name [,
var_name...]
Represents code supplied by
user void main (void)
{ ...
}
Preface
© 2009 Microchip Technology Inc. DS51793A-page 3
RECOMMENDED READING
This user's guide describes how to use the MCP3421 SOT23-6 Evaluation Board with
the PICkit Serial Analyzer. The following Microchip documents are available and rec-
ommended as supplemental reference resour ces.
PICkit™ Serial Analyzer User’s Guide, DS51647
Consult this document for instructions on how to use the PICkit Serial Analyzer hardware
and software.
MCP3421 Data Sheet, “18-Bit Analog-to-Digital Converter with I2C Interface and
On-Board Reference” , DS22003
This data sheet provides detailed information regarding the MCP3421 product.
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 – Da ta 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 reque s ts, online dis cus sio n 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 repr esentatives
CUSTOMER SUPPORT
Users of Microchip products can receive assistance through several channels:
Distributor or Representative
Local Sales Of fice
Field Application Engineer (FAE)
Technical Support
Customers should conta ct their distributor, represent ative or field applica tion engine er
(FAE) for support. Local sales offices are also availa ble to help custo mers. 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
MCP3421 SOT23-6 Evaluation Board User’s Guide
DS51793A-page 4 © 2009 Microchip Technology Inc.
DOCUMENT REVISION HISTORY
Revision A (January 2009)
Initial Release of this Document.
MCP3421 SOT23-6 EVALUATION
BOARD USERS GUIDE
© 2009 Microchip Technology Inc. DS51793A-page 5
Chapter 1. Quick Start Instructions
1.1 INTRODUCTION
The following sections provide an overview of the MCP3421 SOT23-6 Evaluation
Board and demonstrate how to use it with the PICkit™ Serial Analyzer
(P/N: DV164122).
The following topics are covered:
Description of the MCP3421 SOT23-6 Evaluation Board
Using MCP3421 SOT23-6 Evaluation Board with the PICkit Serial Analyzer to
evaluate the MCP3421 device
1.2 DESCRIPTION OF THE MCP3421 SOT23-6 EVALUATION BOARD
The MCP3421 SOT23-6 Evaluation Board (P/N MCP3421EV) contains a MCP3421
18-bit Delta-Sigma Analog-to-Digital Converter (ADC). The MCP3421 is an 18-bit
single channel ADC device with various options. The MCP342 1 SOT23-6 Evaluation
Board has anal og inpu t connection p ads an d VDD, SDA, an d SCL test p ads. The user
can connect any sensor input signal to this evaluation board and test the ADC
conversion results. The PICkit Serial Analyzer’s PC graphic user interface (GUI)
provides the user’s interface for writing con figuration register bits of the MCP3421 an d
displays the ADC conversion values. The PICkit Serial Analyzer links between the GUI
and the MCP3421 SOT23-6 Evaluation Board, and provides the I2C communication
PC to the MCP3421 SOT23-6 Evaluation Board. The user also can use this MCP3421
SOT23-6 Evaluation Board without the PICkit Serial Analyzer by providing the I2C
communication signal to the SDA and SCL test pads on the board.
This evaluation board has the following interface:
PICkit Serial Analyzer (P/N: DV164122) for writing configuration register bits and
reading the conve r sion da ta.
The user can monitor the I2C communications by connecting an oscilloscope to the
SDA and SCL test pads. Refer to Appendix A. “Schematic and Layouts”.
1.2.1 I2C Address Bits
The I2C device code and address bits of the MCP3421 device on this board are
“1101000”. These bits are programmed at the factory during production.
Note: The user can use this board withou t the PICkit Serial Analyzer as long as
the VDD, SCL, and SDA are provided to the board. This evaluation board
does not include MCU.
MCP3421 SOT23-6 Evaluation Board User’s Guide
DS51793A-page 6 © 2009 Microchip Technology Inc.
FIGURE 1-1: Front and Back Views of the MCP3421 SOT23-6 Evaluation
Board.
Quick Start Instructions
© 2009 Microchip Technology Inc. DS51793A-page 7
1.3 GETTING STARTED WITH PICKIT SERIAL ANALYZER
Figure 1-1 shows the MCP3421 SOT23-6 Eva luation Board and Figure 1-2 shows the
Evaluation Board and PICkit Serial Analyzer connection.
The following steps describe how to use them together:
1. Connect the MCP3421 SOT23-6 Evaluation Board’s J1 pin socket to the PICkit
Serial Analyzer as shown in Figure 1-2.
2. Connect the oscilloscope probes to SCL and SDA test pins (optional).
3. VDD selection: You can use the VDD from the PICkit Serial Analyzer or use your
own extern al V DD. You can select the VDD path using the JP1 connector:
(a) Connect JP1, if using VDD from PICkit Serial Analyzer,
(b) Disconnect JP1 and apply VDD at VDD pin, if you are using external VDD.
4. Connect V DD, if external VDD is used.
5. LED D1 turns on when VDD is applied.
6. Connecting analog input s: If you need to measure single-ended input, connect
the unused pin (example, VIN-) to VSS.
7. Use the PICkit Serial Analyzer PC GUI to send I2C write and read commands.
See Section 1.3.2.1 “Creating a Script File for Configuration Byte Writing”.
8. Execute the PICkit Serial Analyzer Script file and obtain the ADC conversion
results. The conversion results appear on the PICkit Serial Analyzer PC GUI. Y ou
can also observe the conversion results using the oscilloscope.
Note: If you are using external VDD, connect the external VDD at VDD pad).
Note: Do not connect VDD if you are using VDD from the PICkit Serial Analyzer.
The PICkit Serial Analyzer provides the VDD automatically if it is connected
to PC.
Note: If the VDD is provided from the PICkit Serial Analyzer , then the LED may not
be turned on until you execute a command. See Section 1 .3.2.1 “Creating
a Script File for Configuration Byte Writing” for executing the I2C
command.
CAUTION
The analog input pin has ESD diodes. Certain input con ditions can damage the
device. Please pay attention to the following conditions:
(a) Do not apply input gr ea te r th an the inpu t ra ng e sp ec ifie d by th e MC P34 2 1
data sheet.
(b) Apply input signal after VDD is powered-up.
MCP3421 SOT23-6 Evaluation Board User’s Guide
DS51793A-page 8 © 2009 Microchip Technology Inc.
FIGURE 1-2: MCP3421 SOT23-6 Evaluation Board with the PICkit Serial Analyzer.
PICkit Serial Analyzer
MCP3421 Evaluation Board
USB Cabl e
Connected between the
and Personal Computer
PICkit Serial Analyzer
Personal Computer
Sensor Input
Connectors
Quick Start Instructions
© 2009 Microchip Technology Inc. DS51793A-page 9
1.3.1 PICkit Serial Analyzer PC Software Set-Up for the MCP3421
SOT23-6 Evaluation Board
The following steps describe how to set up and use the PICkit Serial Analyzer PC
Graphic User Interface ( GUI) to write the configuration bits of the MCP3421 on the
Evaluation Board and read the ADC conversion results.
1. Install the PICkit Serial Analyzer software onto your personal computer (PC) .
2. Connect the USB cable between the PICkit Serial Analyzer and your PC.
3. Run the PICkit Serial PC Software. The following graphic user interface (GUI) will
appear. Click the Next button and follow the instructions.
FIGURE 1-3: PICkit Serial Analyzer Configuration Wizard Welcome Window.
4. Select the I2C Master option as communication mode, and click th e Next button.
FIGURE 1-4: Step 1 - Communication Mode Selection.
MCP3421 SOT23-6 Evaluation Board User’s Guide
DS51793A-page 10 © 2009 Microchip Technology Inc.
5. Select 100 kHz or 400 kHz. Either one will be fine. Click the Next button.
FIGURE 1-5: Step 2 - I2C Communication Speed Window.
6. Select No on Enable Pull-ups, and click the Next button.
FIGURE 1-6: Step 3 - Device Pullups Window.
Note: The MCP3421 device support s the I2C bus data rate up to 3.4 MHz, but the
current version of the PICkit Serial Analyzer support s the I2C bus data rate
up to 400 kHz only.
Note: The MCP3421 SOT23-6 Evaluation Board has its own pull-up resistors,
therefore, you don’t need additional pull-up resistors from the PICkit Serial
Analyzer.
Quick Start Instructions
© 2009 Microchip Technology Inc. DS51793A-page 11
7. Select the VDD voltage of the MCP3421 SOT23-6 Evaluation Board and click the
Next button.
Case 1: When you use VDD from the PICkit Serial Analyzer:
If you choose PICkit Serial will power my device and 5 Volt as shown below,
the MCP3421 SOT23-6 Evaluation Board is powered by the 5V DC from the
PICkit™ Serial Analyzer through the JP1 jumper . In this case, make sure that the
JP1 jumper on the MCP3421 SOT23-6 Evaluation Board is connected.
Case 2: When you use your own VDD:
You can also provide your own VDD voltage by applying a VDD voltage at the VDD
test point on the boar d. In this case, make sure the JP1 jumper is disconn ecte d.
FIGURE 1-7: Step 4 - Voltage Source Selection Window.
MCP3421 SOT23-6 Evaluation Board User’s Guide
DS51793A-page 12 © 2009 Microchip Technology Inc.
8. Click the OK button. You have made all of the PICkit Serial Analyzer configura-
tion set-ups. You are now ready to program the MCP3421 SOT23-6 Evaluation
Board using the PICkit Serial Analyzer.
FIGURE 1-8: Configuration Wizard - Finishing Step.
Quick Start Instructions
© 2009 Microchip Technology Inc. DS51793A-page 13
1.3.2 Creating Script Files
In order to make a communication between the PICkit Serial Analyzer and the
MCP3421 SOT23-6 Evaluation Board, a script file is needed. The following procedure
shows how to create script files and how to use them.
•Select Communication -----> Script -- -> Script Builder
FIGURE 1-9: Creating a Script File with Script Builde r.
MCP3421 SOT23-6 Evaluation Board User’s Guide
DS51793A-page 14 © 2009 Microchip Technology Inc.
1.3.2.1 CREATING A SCRIPT FILE FOR CONFIGURATION BYTE WRITING
1. Click on WriteBlockAddrA8 in “Example I2C Scripts” column.
This will result in filling in the spaces under the Script Detail column. Now you
can modify the Script Detail column parameters by clicking with the right mouse
button.
Modifying the Script Details parameters:
1. Under the Script Detail box, select the item in the parameter box.
2. Right click the mouse button and an optio n box appears to the right of your
selection, displaying the options that are available for the parameter selected.
3. Select the desired options (dele te or insert the parameter box).
4. Keep the parameters in the same order as shown below.
FIGURE 1-10: Modifying Parameters in the Script Builder Window.
1. To change value:
Click this box and
type a new value.
2. To delete or insert box:
Choose the box and right
3. Make sure the listed
are in the exact order
parameters in “Script Detail”
as shown here.
.click the mouse button for
options available.
Quick Start Instructions
© 2009 Microchip Technology Inc. DS51793A-page 15
5. Change the parameter value.
I2CSTART
I2CWRTBYT
02
D0
9C
I2CSTOP
Script Detail
------> This mean s th er e ar e two byte s to send
------> 1st Write Byte: Address byte with W/R bit = 1101-0000
------> 2nd Write Byte: 1001-1100
*
*
*
Note: All 6 parameters above must be listed in the same order as shown here.
The para meter above with * are not modifiable. Address bits
(A2, A1, A0) = (0,0,0) for this evaluation board. See the MCP3421 Data
Sheet for more information on address bit selection.
MCP3421 SOT23-6 Evaluation Board User’s Guide
DS51793A-page 16 © 2009 Microchip Technology Inc.
FIGURE 1-11: Script File Example for the I2C Write Command.
2 Bytes to send
Address Byte
Configuration Byte
(9C)
Note that the “9C” in the configuration byte selects the following options:
- Conversion Mode: Contin u ou s Con ve rs i on
- Bit Resolution: 18 bits
- Gain Selection: 1x
Quick Start Instructions
© 2009 Microchip Technology Inc. DS51793A-page 17
1.3.2.2 SAVING THE SCRIPT FILE AND PROGRAMMING THE
CONFIGURATION REGISTER
1. Change the 2nd and 3rd data bytes you want in the Script Detail.
2. Type in any script name (i.e., MCP3421_Write) in the space below the Script
Name menu.
3. Click the Save Script button.
4. Click the Execute Script button.
5. You can also see the SCL and SDA waveforms using the oscilloscope.
FIGURE 1-12: I2C Write Command Waveforms for the MCP3421.
Note: At this point, the PICkit Serial transmits the I2C W rite Command to the
MCP3421 device. The saved file name will appear in Users I2C Scripts
column and can be re-used any time by selecting the file name.
Note: When you click on the “Execute Script” menu, the “Busy” LED on the PICkit
Serial Analyzer will momentarily turn on and then turn off. If the LED
remains ON, a communications problem has occurred. Remove the PICkit
Serial Analyzer from your computer and re-check the parameter values
including the order of parameters under the “Script Detail” column. Try
again until the “Busy” LED goes OFF immediately af ter executing the write
command.
Write Command with Address bits Configuration Bits
Zoom-in
Zoom-in
MCP3421 SOT23-6 Evaluation Board User’s Guide
DS51793A-page 18 © 2009 Microchip Technology Inc.
1.3.3 Reading the Conversion Dat a using the PICkit™ Seria l Analyzer
You can read back the conversion data by following the next steps.
1.3.3.1 CREATING A SCRIPT FILE TO READ THE CONVERSION DATA
1. Click on ReadAddrA8 in “Example I2C Scripts” column.
This will result in filling in the spaces under the Script Detail column. Now you
can modify the p arameter boxes (delete o r insert) in the Script Det ail column with
options. The list of options will appear if you click the right mouse button at the
parameter box. You can delete the parameter box or add a new one.
Make sure you have the “Script Detail” parameters are listed in order as
follows:
I2CSTART
I2CWRTBYT
01
D1
I2CRDBYTNLB
I2CSTOP
Script Detail
------> This means there is one byte for addres s
------> Address byte with W/R bit = 1101-0001
------> 5 bytes to read
5
*
*
*
*
Note: All 7 parameters above must be listed in the same order as shown here.
The parameters above with * are not modifiable. Address bits
(A2, A1, A0) = (0,0,0) for the MCP3421 in this evaluation board. See the
MCP3421 Data Sheet for more information on address bit selection.
Quick Start Instructions
© 2009 Microchip Technology Inc. DS51793A-page 19
FIGURE 1-13: Script File Sample to Read Conversion Data.
2. Type in any script name (i.e., MCP3421_Read) in the space below th e Script
Name menu.
3. Click Save Script butt on .
4. Click Execute Script button.
5. You can also see the SCL and SDA waveforms using the oscilloscope.
Requesting
Address Byte
5 Bytes
Note: At this point, the PICkit™ Serial transmits the I2C Read Command to the
MCP3421 device. The saved file name will appear in Users I2C Scripts
column and can be re-used any time by selecting the file name.
Note: When you click on the “Execute Script” menu, the “Busy” LED on the PICkit
Serial Analyzer will momentarily turn on and then turn off. If the LED
remains ON, a communications problem has occurred. Remove the PICkit
Serial Analyzer from your computer and re-check the parameter values
including the order of parameters under the “Script Detail” column. Try
again until the “Busy” LED goes OFF immediatel y after executing the read
command.
MCP3421 SOT23-6 Evaluation Board User’s Guide
DS51793A-page 20 © 2009 Microchip Technology Inc.
FIGURE 1-14: Reading Conversion Re sult s: Note th at the single end ed Input = 1.030 7V is applied a t
Ch.1. The reading indicates the measured value is 1.0307V. See Figure 1-15 for waveforms.
5th Byte: Repeated Byte for Configuration byte
4th byte: Configuration Byte (note that RDYbit is “0”)
3rd byte: Data Byte
2nd byte: Data Byte
1st byte: Data Byte
Output code: 101AD in hex (= 65965 in decimal)
Output Voltage: 65865 x 15.625 mV (LSB) = 1.0307 V with PGA = 1
Results:
(note that RDY bit returned to “1” after 4th byte)
Note:
* 1 LSB with 18 bit resolution optio n: 15.625 µV
Reading Conversion
Data
Requesting
5 Bytes
PGA
Quick Start Instructions
© 2009 Microchip Technology Inc. DS51793A-page 21
FIGURE 1-15: Read Command and Data on I2C bus. Note the RDY bit in 4th byte is “0”. This means
the conversion data just rea d is the latest conversi on data. Af ter the RDY bit is read out at the 4th byte, the
RDY bit becomes “1” in the 5th byte (repe ated byte). This means the device is no w in the process of a new
conversion an d th e late st con ver sion result is not ready yet.
Zoom-in
Data Bytes = 0101AD (hex)
Zoom-in
Configuration Byte and Repeated Configuration Byte
(a) Read command and outputs. The 3 data bytes are zoomed in for better clarity.
(b) Read command and outputs. The last two data bytes are zoomed in for better clarity.
4th Byte 5th Byte
RDY bit RDY bit
MCP3421 SOT23-6 Evaluation Board User’s Guide
DS51793A-page 22 © 2009 Microchip Technology Inc.
NOTES:
MCP3421 SOT23-6 EVALUATION
BOARD USERS GUIDE
© 2009 Microchip Technology Inc. DS51793A-page 23
Appendix A. Schematic and Layouts
A.1 INTRODUCTION
This appendix contains the following schematics and layouts for the MCP3421
SOT23-6 Evaluation Board:
Board – Schematic
Board – Top Layer
Board – Top Metal Layer
Board – Bottom Layer
MCP3421 SOT23-6 Evaluation Board User’s Guide
DS51793A-page 24 © 2009 Microchip Technology Inc.
A.2 BOARD – SCHEMATIC
Schematic and Layouts
© 2009 Microchip Technology Inc. DS51793A-page 25
A.3 BOARD – TOP LAYER
MCP3421 SOT23-6 Evaluation Board User’s Guide
DS51793A-page 26 © 2009 Microchip Technology Inc.
A.4 BOARD – TOP METAL LAYER
Schematic and Layouts
© 2009 Microchip Technology Inc. DS51793A-page 27
A.5 BOARD – BOTTOM METAL LAYER
MCP3421 SOT23-6 Evaluation Board User’s Guide
DS51793A-page 28 © 2009 Microchip Technology Inc.
NOTES:
MCP3421 SOT23-6 EVALUATION
BOARD USERS GUIDE
© 2009 Microchip Technology Inc. DS51793A-page 29
Appendix B. Bill Of Materials (BOM)
TABLE B-1: BILL OF MATERIALS
Qty Reference Description Manufacturer Part Number
1 C1 CAP .1UF 25V CERAMIC X7R
0805 Panasonic® - ECG ECJ-2VB1E104K
1 C2 CAP CERAMIC 10UF 6.3V X5R
0805 Panasonic - ECG ECJ-2FB0J106K
1 D1 LED RED ORANGE CLEAR 0805
SMD LITE-ON INC LTST-C170EKT
1 J1 CONN HEADER 6POS .100 R/A
TIN Molex/Waldom® Electronics
Corp 22-05-2061
1 PCB RoHS Compliant Bare PCB,
MCP3421EV 104-00124
2 R1,R3 RES 4.99K OHM 1/8W 1% 0805
SMD Panasonic - ECG ERJ-6ENF4991V
2 R2,R4 DO NOT POPULATE
1 R5 RES 470 OHM 1/8W 5% 0805 SMD Panasonic - ECG ERJ-6GEYJ471V
1 U1 18-Bit Analog-to-Digital Converter
with I2C Interface and On-Board
Reference
Microchip Technology Inc. MCP3421A0T-E/OT
7 VDD Vin+ Vin -
GND SCL SDA
VDD
TEST POINT PC COMPACT SMT Keystone Electronics®5016
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.
DS51793A-page 30 © 2009 Microchip Technology Inc.
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