Microchip Technology MCP6S22 PGA PICtail User Manual

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MCP6S22 PGA PICtail™

Demo Board User’s Guide

 2004 Microchip Technology Inc. DS51481A

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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in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates.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 Mic rochip’s products as c ritical compon ents in life support systems is not authorized except with express written approval by Microchip. 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, microID, MPLAB, PIC, PICmicr o, PICST ART,

PRO MATE, PowerSmart, rfPIC, and SmartShunt are registered trademarks of Microchip T echnology Incorporated in the U.S.A. and other countries.

AmpLab, FilterLab, MXDEV, MXLAB, PICMASTER, 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, dsPICDEM, dsPICDEM.net, dsPICworks, ECA N, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB, In-Circuit Serial Programming, ICSP, ICEPIC, Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM , PI Cki t, PICDEM, PICDEM.net, PICLAB, PICtail, PowerCal, PowerInfo, PowerMate, PowerTool, rfLAB, rfPICDEM, Select Mode, Smart Serial, SmartTel and Total Endurance are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.

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.

Printed on recycled paper.

Microchip received ISO/TS-16949:2002 quality system certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona and Mountain View, California in October 2003. The Company’s quality system processes and procedures are for its PICmicro 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.

8-bit MCUs, KEELOQ

code hopping

DS51481A-page ii  2004 Microchip Technology Inc.

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MCP6S22 PGA PICTAIL™

DEMO BOARD USER’S GUIDE

Table of Contents

Preface ...........................................................................................................................1

Chapter 1. Product Overview........................................................................................5

1.1 Introduction ...............................................................................................5

1.2 What is MCP6S22 PGA PICtail™ Demo Board? ..................................... 5

1.3 What the MCP6S22 PGA PICtail Demo Board Kit Includes .................... .5

Chapter 2. MCP6S22 PGA PICtail Demo Board...........................................................7

2.1 Introduction ...............................................................................................7

2.2 Features ................................................................................................... 7

2.3 Getting Started ......................................................................................... 7

2.4 Demo Board Description .......................................................................... 9

Appendix A. Schematic and Layouts ........................................................................13

A.1 Introduction .............................................................................................13

A.2 Board Schematic ..................................................................................14

A.3 Board - Top Assembly And Silk-Screen..................................................15

A.4 Board - Top Layer ................................................................................. 16

A.5 Board - Bottom Assembly And Silk-Screen............................................. 17

A.6 Board - Bottom Layer ............................................................................18

A.7 Board - Ground Plane ............................................... ............................19

A.8 Board - Power Plane ............................................................................. 20

Appendix B. Bill-Of-Materials (BOM) .........................................................................21

Worldwide Sales and Service ....................................................................................24

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MCP6S22 PGA PICtail™ Demo Board User’s Guide

NOTES:

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MCP6S22 PGA PICTAIL™

DEMO 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 dif fer 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 on-line help. Select the Help menu, and then Topics to open a list of available on-line help files.

IDE

INTRODUCTION

This chapter contains general information that will be useful to know before using the MCP6S22 PGA PICtail™ Demo Board. Items discussed in this chapter include:

• About Th is Guide

• Recommended Reading

• The Microchip Web Site

• Customer Support

ABOUT THIS GUIDE

Document Layout

This document describes h ow to use MCP6S22 PGA PICtail™ Demo Board as a development tool to emulate and debug firmware on a target board. The manual layout is as follows:

• Chapter 1: Product Overview – Important information about the MCP6S22 PGA PICtail™ Demo Board.

• Chapter 2: MCP6S22 PGA PICtail™ Demo Board – This chapter includes instructions on how to get started with this demo board and a detailed description of each function of the demo board.

• Appendix A: Schematic and Layouts – Shows the schematic and layout diagrams for the MCP6S22 PGA PICtail™ Demo Board.

• Appendix B: Bill-of-Materials – Lists the parts used to build the MCP6S22 PGA PICtail™ Demo Board.

 2004 Microchip Technology Inc. DS51481A-page 1

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MCP6S22 PGA PICtail™ Demo Board User’s Guide

Conventions Used in this Guide

This manual uses the following docum entation conventions:

DOCUMENTATION CONVENTIONS

Description Represents Examples

Arial font:

Italic charac ters Referenced books MPLAB

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

‘bnnnn A binary number where n is a

Text in angle br ackets < > A key on the keyboard Press <Enter>, <F1>

Courier font:

Plain Courier Sample source code #define START

Italic Courier A variable argument file.o, where file can be

0xnnnn A hexadecimal number wher e

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

digit

Filenames autoexec.bat File paths c:\mcc18\h Keywords _asm, _endasm, static Command-line options -Opa+, -Opa- Bit values 0, 1

n is a hexadecimal digit

Choice of mut ually exclusive arguments; an OR selection

Represents code supplied by user

“Save project before build”

‘b00100, ‘b10

any valid filename

0xFFFF, 0x007A

[options] errorlevel {0|1}

var_name...] void main (void)

{ ... }

IDE User’s Guide

Chapter 1. Product Overview

1.1 INTRODUCTION

This chapter provides an overview of the MCP6S22 PGA PICtail Demo Board and covers the following topics:

• What is MCP6S22 PGA PIC tail Demo Board?

• What the MCP6S22 PGA PICtail Demo Board kit includes

1.2 WHAT IS MCP6S22 PGA PICTAIL DEMO BOARD?

The MCP6S22 PGA PICtail Demo Board is used to evaluate and demonstrate Microchip Technology’s Programmable Gain Amplifier (PGA) family, MCP6S21/2/6/8. This board has a user interface to program the MCP6S22 two-channel PGA. It can also be interfaced with Microchip’s PICkit™ 1 Flash Starter Kit Development Board. This platform allows the user to develop firmware that selects the PGA gains and channels using the SPI™ interface.

The MCP6S22 PGA PICtail Demo Board can be used as a stand-alone, with a user interface that allows the PGA gains and channels to be selected without a firmware development. The board uses a USB interface to communicate with a Personal Computer (PC), while the Pickit software can be used as a Graphical User Interface (GUI) to display the PGA output voltage.

1.3 WHAT THE MCP6S22 PGA PICTAIL DEMO BOARD KIT INCLUDES

This MCP6S22 PGA PICtail Demo Board Kit includes:

• The MCP6S22 PGA PICtail Demo Board

• MCP6S22 Demo Firmware

• USB cable

• MCP6S 22 PGA PICta il Demo Board Use r’s Guide (DS51481)

• MCP6S2X Data Sheet (DS21117)

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MCP6S22 PGA PICtail™ Demo Board User’s Guide

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Chapter 2. MCP6S22 PGA PICtail Demo Board

2.1 INTRODUCTION

The MCP6S22 PGA PICtail Demo Board is designed to demonstrate Microchip’s family of Programmable Gain Amplifiers (PGAs) and uses the two-channel MCP6S22 PGA device. An optical sensor circuit and potentiometer are used as voltage sources to the PGA input channels. This demo board can be used to demonstrate firmware development to program the PGA gains and channels using the PICkit 1 Flash Starter Kit.

In addition, the PGA gains and channels can be selected using the user interface DIP switch. A PIC micro to user configuration. This microcontroller also measures the PGA output voltage using a 12-bit Analog-to-Digital Converter (ADC), with the measured data being transferred to a Personal Computer (PC) using a Universal Serial Bus (USB) interface. The Pickit 1 Flash Starter Kit software is used as a Graphical User Interface (GUI) is used to display the data on the PC.

This board is designed to evaluate the PGA with minimum PCB trace-induced noise or crosstalk. It uses a four-layer board with solid ground and power layers. The placement of each trace has been carefully considered so that the user can evaluate the PGA over a wide frequency range.

MCP6S22 PGA PICTAIL™

DEMO BOARD USER’S GUIDE

microcontroller unit (MCU) is used to program the PGA according

2.2 FEATURES

The MCP6S22 PGA PICtail Demo Board has the following features:

• Demonstration of the MCP6S22 PGA

• 13-Bit Analog-to-Digital Converter (ADC) with SPI™ interface

• USB PIC16C745 microcontroller

• An optical sensor circuit connected to the PGA

• An adjustable voltage source using a thumb-wheel potentiometer connected to the PGA

• Four-layer PCB with separate ground and power supply planes for noise immunity

2.3 GETTING STARTED

The MCP6S22 PGA PICtail Demo Board is used for evaluation and demonstration of the PGA’s features. A bl oc k di a gram of the demo bo ar d la y ou t is sho w n i n Figure 2-1. The following procedure describes how to operate this demo board.

1. Install and run the GUI from the PC.

2. Connect the demo board to a PC using a USB cable.

3. Plug the jumpers for JP

potentiometer voltage to the PGA input channels (CH0 and CH1).

4. The PGA output voltage will be graphically displayed on the PC.

5. Select the PGA gain and channel using the on-board DIP switch according to the

configuration table printed on the demo board silk-screen.

6. Press the READ push button switch to program the PGA.

and JP2 to connect the optical sensor and the

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MCP6S22 PGA PICtail™ Demo Board User’s Guide

Note: This demo board can be powered with an external voltage source, +5V,

CH0/1

G0 G1 G2

(push button)

Gain select

DIP Switch

READ

inputs

PIC16C745

Serial

Data

USB Port

using the V used to program the PGA gains and channels would still be functional, but the user has to use an oscilloscope to measure the output voltage. The demo can also be powered by connecting the 14-pin header to the PICkit 1 Flash Starter Kit. However, the user interface switches can not be used to program the PGA. The user must use the supplied firmware (MCP6S22 PICtail.hex), or develop custom firmware using the PICkit 1 Flash Starter Kit, to configure the PGA (refer to Section

2.4.6 “PGA Interface to PICkit 1 Flash Starter Kit”).

SPI™ Bus

+5V

and GND test points. In this case, the user interface switches

Proto area

to prototype area

MCP3301

Potentiometer

ADC

REF

TC55

LDO

Header

Ch1

Ch0

MCP6S22

PGA

Photo Sensor

OUT

SPI Bus

+5V

Interface

Header

PICkit™ 1 Flash Starter Kit

FIGURE 2-1: MCP6S22 PICtail™ Demo Board Functional Block Diagram.

DS51481A-page 8  2004 Microchip Technology Inc.

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MCP6S22 PGA PICtail™ Demo Board User’s Guide

2.4 DEMO BOARD DESCRIPTION

The following sections describe each element of this demo board in further detail.

2.4.1 Power

This demo board can be powered using the USB interface, an external voltage source or the PICkit 1 Flash Starter Kit. Power to the digital and analog components is separated in order to avoid digital crosstalk to the analog components; particularly noise from the fast transient edges of serial data signals that are riding on the USB power line. In order to minimize high-frequency noise, a two-pole Resistor-Capacitor (RC) filter network is used to attenuate the noise. This filtered source is regulated using Microchip’s TC55 voltage regulator (U3). The TC55 regulates the +5V supply from the USB source to +4.1V. This regulated voltage (V includes the MCP6S22 PGA (U5), MCP3301 ADC (U potentiometer (VR and the pull-up resistors that are connected to the PICmicro microcontroller I/O lines.

To minimize ground noise on the analog components, the Printed Circuit Board (PCB) has four layers. The top layer is for analog circuits and the bottom layer is for digital circuits. The two layers in the middle are the power and ground planes.

The I/O lines connected to the PGA have a resistor voltage-divider network. Since the PICmicro microcontroller is powered by a +5V supply and the PGA is powered with +4.1V supply, there is an approximate 1V difference in the serial communication level. This could trigger the PGA’s Electrostatic Discharge (ESD) protection diodes or damage the device. Therefore, a voltage divider network is used to lower the serial communication voltage level to 4V.

). The unregulated +5V supply (VDD) powers the PICmicro MCU

) powers the analog devices which

REG

), photodiode circuit (D2) and the

2.4.2 PGA Input Channels and On-Board Circuits

This demo board uses the dual-channel MCP6S22 PGA (U5) to demonstrate the PGA functions. There are two on-board circuits that can be used to demonstrate the PGA functions. These circuits are an optical sensor (D potentiometer (VR JP

. Pins 1 and 2 of JP2 connect the optical sensor to Channel 0, while pins 1 and 2 of

connect the potentiometer to Channel 1 of the PGA.

). The two input channels are connected to the jumpers JP1 and

Caution: The jumpers need to be removed when connecting circuits using

the prototype area or the SMA (SPC 10611) connectors.

The user can change the voltage to the input channels of the PGA and observe the PGA output voltage on the GUI or an oscilloscope. The thumb-wheeled potentiometer can be used to quickly demonstrate the PGA’s gain function by adjusting the input voltage and changing the gain. However, the optical sensor circuit requires a change in the ambient light. The change in ambient light results in a change in voltage. Therefore, the photodiode on the PCB needs to be pointed towards higher light intensity. The PGA can be used to gain up the voltage change from either sensor circuit, thereby utilizing the full input range of the ADC.

The user can also develop a circuit on the prototype development area and connect the circuit to the PGA input channels (refer to Section 2.4.7 “Using the Prototype Area” for soldering guidance). In this case, the jumpers on JP disconnected.

) and a thumb-wheeled

and JP2 need to be

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MCP6S22 PGA PICtail™ Demo Board User’s Guide

2.4.3 PGA Gain and Channel Selection

The PGA gains and channels can be configured using the DIP switch (S2) and the momentary push button switch (S Ch0/1 to the ‘0’ or ‘1’ position according to the configuration table provided on the demo board silk-screen and momentarily pressing the READ push button switch to configure the PGA. The configuration table is also shown in Table 2-1 and Table 2-2.

TABLE 2-1: DIP SWITCH CONFIGURATION TO PROGRAM PGA GAIN

Gain G2 G1 G0

100 0 200 1 401 0 501 1

810 0 10 1 0 1 16 1 1 0 32 1 1 1

TABLE 2-2: DIP SWITCH CONFIGURATION TO PROGRAM PGA CHANNEL

Channel Ch 0/1

00 11

). The user can slide the G2, G1, G0 switches and

These configuration switches cannot be used to program the PGA if this demo board is connected to the PICkit 1 Flash Starter Kit (Refer to Section 2.4.6 “PGA Interface

to PICkit 1 Flash Starter Kit” for further explanatio n) .

2.4.4 Measuring the PGA Output

The MCP6S22 PGA output is connected to a MCP3301 13-bit ADC with RC anti-aliasing filter. The ADC continuously measures the PGA output voltage and transmits the data to the PIC16C745 using an SPI bus interface. The measured data is transmitted to the PC via the USB port for display. The PGA output pin is also connected to a test point, allowing the user to connect an oscilloscope probe and measure the PGA output.

When the scope probe is connected, the effect of the probe on the PGA output needs to be considered. The probe capacitance introduces a capacitive load to the PGA, so the effects of capacitive load needs to be considered (refer to the MCP6S22 data sheet (DS21117) for further details). In addition to the probe capacitance, a long ground lead from the scope probe to the demo board creates a ground loop and compromises the PGA performance. Therefore, the probe ground lead needs to be as short as possible.

It is recommended that the user solder SMA connectors in the space provided (Figure 2-2) and use shielded cables to connect the input and output signals from an external voltage source, and to an oscilloscope. This ensures proper demonstration of the MCP6S22 PGA performance.

DS51481A-page 10  2004 Microchip Technology Inc.

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MCP6S22 PGA PICtail™ Demo Board User’s Guide

2.4.5 PICmicro Microcontroller Functions

When the MCP6S22 PGA PICtail Demo Board is operating in “stand-alone” mode (not connected to the PICkit 1 Flash Starter Kit), the PIC16C745 microcontroller (U performs three major functions: (1) It communicates to the host PC via the USB port (J

); (2) programs the PGA according to the user-configured DIP switch settings (S1

and S

); and (3) communicates with the MCP3301 ADC (U4) via the SPI interface in

order to read the ADC’s digitized output voltage. Initially, the microcontroller establishes communication with the host PC via the USB

port. It then commands the ADC to perform a conversion and reads the data. This data is then transferred to the host PC. This routine continues until the user momentarily pushes the READ push button switch. When the user requests the read, the PICmicro microcontroller reads the DIP switch configuration and programs the PGA’s gain and channel settings accordingly using the SPI interface. The routine then continues to transmit data from the ADC to the host PC.

Note that it is not necessary to connect the USB interface to a PC to program the PGA. The demo board can be powered using an external +5V source and the user can program the PGA using the READ push button switch. In this case, an oscilloscope needs to be used to measure the output voltage.

2.4.6 PGA Interface to PICkit 1 Flash Starter Kit

)

This MCP6S22 PGA PICtail Demo Board can be connected to a PICkit 1 Flash Starter Kit using the 14-pin header. In this configuration, the MCP6S22 PGA PICtail Demo Board can be used as an evaluation tool for most of the 14-pin Flash PICmicro microcontrollers. The user can develop firmware to change the PGA gains and channels using this demo board.

A demo firmware has been provided that can be programmed in a 14-pin PICmicro microcontroller (PIC16F676) using the PICkit 1 Flash Starter Kit. The user can change the PGA gains and channels using the available push button switch (SW1) and potentiometer (VR

). The push button allows the user to step through the gains, while

turning the potentiometer to the left or right changes the channel. The gain setting is displayed on the on-board LEDs in binary format. In addition, this firmware uses the internal 10-bit ADC to measure the PGA output voltage. The data is transmitted to the PC for display in strip-chart format using the PICkit 1 Flash Starter Kit software.

Only 5 pins of the 14-pin header are connected for I/O. Four of the five lines (RC3, RC4, RC5 and RC2) are connected to the SPI pins of the PGA and ADC (SCK, SData and CS

) pins. The fifth line (RC0) is connected to the PGA output voltage pin. This line is selected specifically for 14-pin PICmicro microcontrollers with an internal ADC. Note that if the PICkit 1 Flash Starter Kit is being used, the PICmicro microcontroller RC0 I/O pin is configured as an output. This will load down the PGA’s output and the performance will be degraded. Therefore, be sure to configure the PICmicro microcontroller RC0 I/O pin as a high-impedance A/D input pin.

Since the PICkit 1 Flash Starter Kit is powered via the USB port, the voltage level of the SPI line is +5V, which is higher than the PGA supply voltage. Therefore, a voltage divider network (R

, R24, R25) is implemented between the PIC16C745 and

11-R16

MCP6S22 to lower the communication voltage level. Refer to Section 2.4.1 “Power” for further explanation.

 2004 Microchip Technology Inc. DS51481A-page 11

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MCP6S22 PGA PICtail™ Demo Board User’s Guide

When the MCP6S22 PGA PICtail Demo Board is connected to the PICkit 1 Flash Starter Kit, the gain and channel configuration DIP switch (S button switch (S

) cannot be used to configure the PGA. The serial I/O lines from the

on-board USB PICmicro microcontroller (PIC16C745) are configured as high-impedance inputs. T his prevents a potential serial bus conflict if the user-developed firmware for the MCP6S22 PGA PICtail Demo Board and the PICmicro microcontroller on the PGA demo board try to access the PGA at the same time.

2.4.7 Using the Prototype Area

Soldering pads are provided on this MCP6S22 Demo Board for SMA connectors and prototype circuit development. These pads are different from the traditional through-hole prototype area. In order to measure optimum PGA performance, it is essential that the analog circuit have a solid ground plane. Therefore, this demo board is developed on a four-layer board with a minimum number of through-holes through the analog ground plane. Because of this, the pins may need to be bent accordingly for soldering purposes.

Regulated 4.1V supply voltage (V CH1) and PGA output (V V

is heavily loaded, the 4.1V may be reduced.

REG

OUT_PGA

The illustration below shows how the SMA connectors are slid onto the board at test points CH0, CH1 and V

. The round center conductor goes over the test pad and two

OUT

of the square lugs go underneath the board on the unmasked ground fill (bottom metal). Solder the lugs and center conductor to the board.

), ground (GND), PGA channel inputs (CH0,

REG

) signals are also available on the prototype area. If

) and the READ push

FIGURE 2-2: SMA Connectors.

SMA Connector and Board (side view)

square lugs (ground)

round center conductor

top of board

Board

square lugs (ground)

DS51481A-page 12  2004 Microchip Technology Inc.

Page 17

Appendix A. Schematic and Layouts

A.1 INTRODUCTION

This appendix contains the following schematics and layouts for the MCP6S22 PGA PICtail Demo Board:

• Board Schematic

• Board - Top Assembly and Silk-Screen

• Board - Top Layer

• Board - Bottom Assembly and Silk-Screen

• Board - Bottom Layer

• Board - Ground Layer

• Board - Power Layer

MCP6S22 PGA PICTAIL™

DEMO BOARD USER’S GUIDE

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MCP6S22 PGA PICtail™ Demo Board User’s Guide

A.2 BOARD SCHEMATIC

DS51481A-page 14  2004 Microchip Technology Inc.

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A.3 BOARD - TOP ASSEMBLY AND SILK-SCREEN

 2004 Microchip Technology Inc. DS51481A-page 15

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MCP6S22 PGA PICtail™ Demo Board User’s Guide

A.4 BOARD - TOP LAYER

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A.5 BOARD - BOTTOM ASSEMBLY AND SILK-SCREEN

 2004 Microchip Technology Inc. DS51481A-page 17

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MCP6S22 PGA PICtail™ Demo Board User’s Guide

A.6 BOARD - BOTTOM LAYER

DS51481A-page 18  2004 Microchip Technology Inc.

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A.7 BOARD - GROUND PLANE

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MCP6S22 PGA PICtail™ Demo Board User’s Guide

A.8 BOARD - POWER PLANE

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Appendix B. Bill-Of-Materials (BOM)

TABLE B-1: BILL-OF-MATERIALS

Qty Reference Description Manufacturer Part Number

8 C5-C8 ,C 1 3,

C16,C17,C18 3 C2,C3,C9 Capacitor, 1.0 µF 16V, Ceramic, X5R 0603 Panasonic ECJ-1VB1C105K 1 C1 Capacitor, 0.22 µF 10V, Ceramic, X5R 0603 Panasonic ECJ-2YB1E224K 1 C4 Capacitor, 10 µF, 16V, SMT,Electrolytic Panasonic SE10/16 1 R3 Resistor, 1.50 kΩ, 1/16W 1% 0603 SMD Panasonic ERJ-3EKF1501V 1 R1 Resistor, 4.75 kΩ, 1/16W 1% 0603 SMD Panasonic ERJ-3EKF4751V 8 R2,R5-R8,

R10,R22,R26 3 R9,R11,R24 Resistor, 1.24 kΩ, 1/16W 1% 0603 SMD Panasonic ERJ-3EKF1241V 3 R14,R15, R16,R25 Resistor, 4.99 kΩ, 1/16W 1% 0603 SMD Panasonic ERJ-3EKF4991V 1 R17 Resistor, 100 kΩ, 1/16W 1% 0603 SMD Panasonic ERJ-3EKF1003V 2 R18,R19 Resistor, 10.0Ω, 1/16W 1% 0603 SMD P anasonic ERJ-3EKF10R0V 1 R20 Resistor, 10.2Ω, 1/16W 1% 0603 SMD Panasonic ERJ-3EKF10R2V 1 R21 Resistor, 150Ω, 1/16W 1% 0603 SMD Panasonic ERJ-3EKF1500V 1 C17 Resistor, 0.0 Ω 1/10W 5% 0603 SMD) Yageo America 9C06031A0R00JLHFT 1 R23 Not populated N/A N/A 1 R4 Optional Resistor N/A N/A 1 Y1 Resonator, Ceramic, 6.00 MHZ, SMD ECS™ Inc. ECS-SR1-6.00-B 1 D1 Diode, Schottky, 30V, 20 mA, MINI 3P Panasonic SSG MA3X786E0L 1 D2 Photodiode, IR 820NM SIDE LOOK Sharp™ Microelectronics PD100MC0MP 1 VR1 Potentiometer, 10 kΩ,, Thumbwheel, Cerm STBourns

Capacitor, .1 µF 16V Ceramic, X7R 0603 Panasonic

Resistor, 10.0 kΩ, 1/16W 1% 0603 SMD Panasonic ERJ-3EKF1002V

Inc. 3352W-1-103

ECJ-1VB1C104K

1 U1 PIC16C745/765 Microc ontroller Microchip Technology Inc. PIC16C745-SO 1 U3 TC55 Low-Dropout Voltage Regulator Microchip Technology Inc. TC55RP4101 1 U4 MCP3301,A/D Converter, SO8 Microchip Technology Inc. MCP3301 1 U5 Single-Ended, Rail-to-Rail I/O, Low Gain PGA Microchip Technology Inc. MCP6S22-I/P 1 U5 8 PIN Socket Mill-Max 1 J1 Connector, USB RTANG Male Type B PCB Assmann Electronics, Inc AU-Y1007 1 J2,J6,J7 Connector, Header, 14-Pos .100 VERT TIN Molex

Corporation

1 S1 Switch, TACT, 6 MM, SMD MOM 160GF Omron

ECB Div

1 S2 Switch, Dip, 4-Pos Top Slide SMT CTS Corporation

7 CH0,CH1,V

GND,V

 2004 Microchip Technology Inc. DS51481A-page 21

OUT

REG,VDD

PC Test Point Compact, SMT Keystone Electronics

Resistor/Electrocomponents

/Waldom® Electronics

Electronics, Inc -

110-93-308-41-001

22-28-4140

B3S-1000

204-4ST

5016

Page 26

WORLDWIDE SALES AND SERVICE

AMERICAS

Corporate Office

2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7200 Fax: 480-792-7277 Technical Support: http:\\support.microchip.com Web Address: www.microchip.com

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Boston

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Chicago

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Dallas

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Detroit

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ASIA/PACIFIC

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ASIA/PACIFIC

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Tel: 91-80-2229-0061 Fax: 91-80-2229-0062

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Tel: 91-11-5160-8632 Fax: 91-11-5160-8632

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Korea - Seoul

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Singapore

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Taiwan - Kaohsiung

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EUROPE

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Tel: 49-89-627-144-0 Fax: 49-89-627-144-44

Italy - Milan

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Netherlands - Drunen

Tel: 31-416-690399 Fax: 31-416-690340

England - Berkshire

Tel: 44-118-921-5869 Fax: 44-118-921-5820

09/27/04

DS51481A-page 22  2004 Microchip Technology Inc.