Microchip Technology MCP651 Bedienungsanleitung

MCP651

Input Offset

Evaluation Board

User’s Guide

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and may be superseded by updates.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, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro,

PICSTART, rfPIC, SmartShunt and UNI/O are registered

trademarks of Microchip Technology Incorporated in the

U.S.A. and other countries.

FilterLab, Hampshire, Linear Active Thermistor, 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, In-Circuit Serial

Programming, ICSP, ICEPIC, Mindi, MiWi, MPASM, MPLAB

Certified logo, MPLIB, MPLINK, mTouch, nanoWatt XLP,

PICkit, PICDEM, PICDEM.net, PICtail, PIC32 logo, PowerCal,

PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB, Select

Mode, Total Endurance, TSHARC, 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.

Printed on recycled paper.

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.

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.

MCP651 INPUT OFFSET

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 ................................................................................................. 3

Document Revision History ................................................................................... 4

Chapter 1. Product Overview

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

1.2 Kit Contents .................................................................................................... 5

1.3 Intended Use .................................................................................................. 6

1.4 Description ..................................................................................................... 6

Chapter 2. Installation and Operation

2.1 Introduction ................................................................................................... 11

2.2 Required Tools ............................................................................................. 11

2.3 Configuring the Lab Equipment and PCB .................................................... 12

2.4 Operating Conditions .................................................................................... 14

2.5 Converting to Other Parameters .................................................................. 15

2.6 Settling Time, Noise and Sampling Rate ...................................................... 17

Chapter 3. Possible Modifications

3.1 Introduction ................................................................................................... 19

3.2 Range of Parts Supported by MCP651 Input Offset Evaluation Board ........ 19

3.3 Changes to Accommodate Other DUTs ....................................................... 21

Appendix A. Schematics and Layouts

A.1 Introduction .................................................................................................. 25

A.2 Schematic and Layouts ................................................................................ 25

A.3 Board – Schematic ....................................................................................... 26

A.4 Board – Combination of the Top Silk Screen, Top Solder Mask and Top Metal

Layers ..................................................................................................... 27

A.5 Board – Top Silk Screen .............................................................................. 28

A.6 Board – Top Solder Mask and Top Metal Layer .......................................... 29

A.7 Board – Bottom Metal Layer ........................................................................ 30

MCP651 Input Offset Evaluation Board User’s Guide

Appendix B. Bill Of Materials (BOM)

B.1 MCP651 Input Offset Evaluation Board BOM .............................................. 31

B.2 Adaptor Board BOM ..................................................................................... 33

Worldwide Sales and Service .....................................................................................34

MCP651 INPUT OFFSET

EVALUATION BOARD

USER’S GUIDE

Preface

INTRODUCTION

This chapter contains general information that will be useful to know before using the

MCP651 Input Offset 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 MCP651 Input Offset Evaluation Board. The

manual layout is as follows:

•Chapter 1. “Product Overview” - Important information about the MCP651 Input

Offset Evaluation Board.

•Chapter 2. “Installation and Operation” – Covers the initial set-up of the

MCP651 Input Offset Evaluation Board. It lists the required tools, shows how to

set up the board and how to connect lab equipment. It then demonstrates how to

use this board.

•Chapter 3. “Possible Modifications” – Shows how to modify the board for other

single Microchip op amps in SOIC-8, PDIP-8 and other packages.

•Appendix A. “Schematics and Layouts” – Shows the schematic and board

layouts for the MCP651 Input Offset Evaluation Board.

•Appendix B. “Bill Of Materials (BOM)” – Lists the parts used to populate the

MCP651 Input Offset Evaluation Board. Also lists loose parts shipped with the

board in an ESD bag, alternate components and components not populated.

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.

MCP651 Input Offset 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

“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-line options -Opa+, -Opa-

Bit values 0, 1

Constants 0xFF, ‘A’

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

any valid filename

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

RECOMMENDED READING

This user's guide describes how to use MCP651 Input Offset Evaluation Board. Other

useful documents are listed below. The following Microchip documents are available

and recommended as supplemental reference resources.

MCP6V01/2/3 Data Sheet, “300 µA, Auto-Zeroed Op Amps”, DS22058

Gives detailed information on the op amp family that is used for signal processing and

output voltage control on the MCP651 Input Offset Evaluation Board.

MCP651 Data Sheet, “5 mA Op Amps with mCal”, DS22146

Gives detailed information on the op amp family that is used as the DUT on the

MCP651 Input Offset Evaluation Board.

AN1177 Application Note, “Op Amp Precision Design: DC Errors”, DS01177

Discusses how to achieve high DC accuracy in op amp circuits. Also discusses the

relationship between an op amp’s input offset voltage (VOS), CMRR, PSRR,

Open-Loop Gain and VOS Drift over Temperature.

AN1258 Application Note, “Op Amp Precision Design: PCB Layout Techniques”,

DS01258

Discusses how to lay out PCBs for high DC accuracy in op amp circuits. Also discusses

other PCB related accuracy issues.

8-Pin SOIC/MSOP/TSSOP/DIP Evaluation Board User’s Guide, DS51544

Covers the usage of the SOIC8EV Evaluation Board.

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

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

MCP651 Input Offset Evaluation Board User’s Guide

DOCUMENT REVISION HISTORY

Revision A (May 2009)

• Initial Release of this Document.

MCP651 INPUT OFFSET

EVALUATION BOARD

USER’S GUIDE

Chapter 1. Product Overview

1.1 INTRODUCTION

The MCP651 Input Offset Evaluation Board is described by the following:

• Assembly # : 102-00258-R2

• Order # : MCP651EV-VOS

• Name: MCP651 Input Offset Evaluation Board

Items discussed in this chapter include:

• Kit Contents

• Intended Use

• Description

1.2 KIT CONTENTS

• One MCP651 Input Offset Evaluation Board, 102-00258-R2

• Important Information “Read First”

FIGURE 1-1: MCP651 Input Offset Evaluation Board Kit Contents.

MCP651 Input Offset Evaluation Board User’s Guide

1.3 INTENDED USE

The MCP651 Input Offset Evaluation Board is intended to provide a simple means to

measure the MCP651 Input Offset Evaluation Board op amp’s input offset voltage

under a variety of operating conditions. The measured input offset voltage (VOST)

includes the input offset voltage specified in the data sheet (VOS) plus changes due to:

power supply voltage (PSRR), common mode voltage (CMRR), output voltage (AOL),

input offset voltage drift over temperature (ΔVOS/ΔTA) and 1/f noise.

The MCP651 Input Offset Evaluation Board works most effectively at room tempera-

ture (near 25°C). Measurements at other temperatures should be done in an oven

where the air velocity is minimal.

1.4 DESCRIPTION

This section starts with the conversion of DUT bias voltages described in the MCP651

data sheet to the voltages on this board. Then there is a discussion of the circuitry that

controls the DUT’s output voltage (VOUTX) and amplifies its total input offset voltage

(VOST). Finally, other portions of the circuit, and their purpose, are discussed. Complete

details of this board are given in Appendix A. “Schematics and Layouts” and

Appendix B. “Bill Of Materials (BOM)”.

1.4.1 Conversion of Bias Voltages

The MCP651 data sheet describes all of its bias voltages relative to VSS, which is

assumed to be at ground (0V). On the other hand, the MCP651 Input Offset Evaluation

Board sets the DUT’s input common mode voltage to 0V. The user needs to convert

from the first set of voltages to the second set (by subtracting VCM):

TABLE 1-1: CONVERSION OF BIAS VOLTAGES

The supply voltages VDDX and VSSX can be estimated using the MCP651’s typical

quiescent current (IQ=6mA):

EQUATION 1-1:

Data Sheet Bias Voltage

(V) Conversion Equations Evaluation Board Bias Voltage

(V)

VCM VCM – VCM VCMX =0V

VDD VDD – VCM VDDI

VSS VSS – VCM VSSI

VOUT VOUT – VCM VOUTX

VLVL– VCM VLX

VCAL VCAL – VCM VCALX

VDDX VDDI IQ10

()+V

DDI 60 mV+

≈

VSSX VSSI IQ10

()–VSSI 60 mV–

≈

Inhaltsverzeichnis

Andere Microchip Technology Hauptplatine Handbücher

Microchip Technology

Microchip Technology MCP3911 Bedienungsanleitung

Microchip Technology

Microchip Technology EVB-UPD301A SRC Bedienungsanleitung

Microchip Technology

Microchip Technology PIC32 Family Bedienungsanleitung

Microchip Technology

Microchip Technology PICtail MRF24J40MC Bedienungsanleitung

Microchip Technology

Microchip Technology PAC1710 Bedienungsanleitung

Microchip Technology

Microchip Technology HV2903 Bedienungsanleitung

Microchip Technology

Microchip Technology EVB-USB3503 QFN Bedienungsanleitung

Microchip Technology

Microchip Technology UCS1003-2 Bedienungsanleitung

Microchip Technology

Microchip Technology 10-Pin MSOP Bedienungsanleitung

Microchip Technology

Microchip Technology RN-2483-PICtail Bedienungsanleitung

Microchip Technology

Microchip Technology PL360G55CF-EK Bedienungsanleitung

Microchip Technology

Microchip Technology PAC1934 Bedienungsanleitung

Microchip Technology

Microchip Technology PL485-EK Bedienungsanleitung

Microchip Technology

Microchip Technology ATmega4809 Xplained Pro Bedienungsanleitung

Microchip Technology

Microchip Technology UCS2112 Bedienungsanleitung

Microchip Technology

Microchip Technology EVB-KSZ9563 Bedienungsanleitung

Microchip Technology

Microchip Technology PICKIT 2 PROGRAMMER-TO-GO Bedienungsanleitung

Microchip Technology

Microchip Technology MCP1650 Bedienungsanleitung

Microchip Technology

Microchip Technology EVB-LAN9252-ADD-ON Bedienungsanleitung

Microchip Technology

Microchip Technology BM70 PICtail Bedienungsanleitung

Microchip Technology

Microchip Technology dsPICDEM MCHV-2 Bedienungsanleitung

Microchip Technology

Microchip Technology ATBTLC1000 Xplained Pro Installationsanleitung

Microchip Technology

Microchip Technology ATmega168PB Xplained Mini Bedienungsanleitung

Microchip Technology

Microchip Technology MCP43XXEV Bedienungsanleitung

Beliebte Hauptplatine Handbücher anderer Marken

DFI

DFI SD170 Bedienungsanleitung

ASROCK

ASROCK ROMED8-2T Bedienungsanleitung

Asus

Asus P2L97A Bedienungsanleitung

Winmate

Winmate IC70 Bedienungsanleitung

Asus

Asus MES-B Bedienungsanleitung

Grantech

Grantech SYS8F377VGGA-3OMN Bedienungsanleitung

Telit Wireless Solutions

Telit Wireless Solutions SL869-3DR Bedienungsanleitung

Gigabyte

Gigabyte GA-9IVDT Bedienungsanleitung

Texas Instruments

Texas Instruments ADS8372EVM Bedienungsanleitung

Commell

Commell MS-C73 Bedienungsanleitung

IBT Technologies

IBT Technologies MB860 Bedienungsanleitung

Nvidia

Nvidia TEGRA DG-04927-001_V01 Bedienungsanleitung

Biostar

Biostar M7VIT Bravo Bedienungs- und Montageanleitung

Intel

Intel D33217CK Bedienungsanleitung

Asus

Asus F1A55-M LX PLUS R2.0 Bedienungsanleitung

EPC

EPC EPC9147C Bedienungsanleitung

Asus

Asus EX-B760M-V5 D4 Bedienungsanleitung

EPOX

EPOX MU-8KHA0010 Bedienungsanleitung