Microchip Technology MCP6V01 Input Offset Demo Board User guide

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MCP6V01

Input Offset

Demo Board

User’s Guide

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MCUs and dsPIC® DSCs, KEELOQ

code hopping

MCP6V01 INPUT OFFSET

DEMO 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 .....................................................................................................9

2.2 Required Tools ...............................................................................................9

2.3 Connecting the Lab Equipment ......................................................................9

2.4 Operating Conditions ....................................................................................10

2.5 Calculating the DUT’s Input Offset Voltage ..................................................10

2.6 Converting Input Offset Voltage to Other Parameters ..................................10

2.7 Reducing the Measurement Noise ............................................................... 12

Chapter 3. Possible Modifications

3.1 Introduction ...................................................................................................13

3.2 Changing the DUT ........................................................................................13

3.3 Connecting a Chip Select Pin to Ground ......................................................14

Appendix A. Schematics and Layouts

A.1 Introduction ..................................................................................................15

A.2 Schematic .................................................................................................... 15

A.3 Combination of the Top Silk Screen and Top Metal Layers .....................17

A.4 Top Silk Screen ........................................................................................17

A.5 Top Metal Layer ....................................................................................... 18

A.6 Bottom Metal Layer ..................................................................................18

Appendix B. Bill Of Materials (BOM)

B.1 MCP6V01 Input Offset Demo Board BOM ...................................................19

Worldwide Sales and Service ....................................................................................20

MCP6V01 Input Offset Demo Board User’s Guide

NOTES:

MCP6V01 INPUT OFFSET

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 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 MCP6V01 Input Offset Demo 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 MCP6V01 Inpu t Offset Demo Boar d. The manual layout is as follows:

• Chapter 1. “Product Overview” - Important information about the MCP6V01 Input Offset Demo Board.

• Chapter 2. “Installation and Operation” – Covers the initial set-up of the MCP6V01 Input Offset Demo Board. It lists the required tools and shows how to connect and set up the lab equipment. The basic theory on converting measurements to offset voltage, open-loop gain, CMRR, PSRR and input offset drift is given, along with a worked example. Hints are then given on reducing measurement noise.

• Chapter 3. “Possible Modifications” - Shows simple modifications to the MCP6V01 Input Offset Demo Board.

• Appendix A. “Schematics and Layouts” – Shows the schematic and board layouts for the MCP6V01 Input Offset Demo Board.

• Appendix B. “Bill Of Materials (BOM)” – Lists the parts used to build the sub-assemblies in the MCP6V01 Input Offset Demo Board.

MCP6V01 Input Offset Demo 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)

{ ... }

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

Drift over Temperature.

), CMRR, PSRR,

Preface

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

MCP6V01 Input Offset Demo Board User’s Guide

DOCUMENT REVISION HISTORY

Revision A (March 2009)

• Initial Release of this Document.

Chapter 1. Product Overview

1.1 INTRODUCTION

The MCP6V01 Input Offset Demo Board is described by the following:

• Assembly # : 102-00227-R3

• Order # : MCP6V01DM-VOS

• Name: MCP6V01 Input Offset Demo Board

Items discussed in this chapter include:

• Kit Contents

• Intended Use

• Description

1.2 KIT CONTENTS

This MCP6V01 Input Offset Demo Board Kit includes:

• Assembled Printed Circuit Board (PCB)

• Important Information “Read First”

• Analog and Interface Products Demonstration Boards CD-ROM (DS21912) Includes:

- MCP6V01 Input Offset Demo Board User’s Guide, (DS51801)

MCP6V01 INPUT OFFSET

DEMO BOARD USER’S GUIDE

FIGURE 1-1: MCP6V01 Input Offset Demo Board Contents.

MCP6V01 Input Offset Demo Board User’s Guide

Outputs

GND

VDD/2

Inputs

DUT

Diff. Amp.

VDD/2

Reference

(buffered)

High Gain Feedback

Network

REF

1.3 INTENDED USE

The MCP6V01 Input Offset Demo Board is intended to provide a simple means to measure the MCP6V01/2/3 op amp’s input offse t voltage ( V conditions. This V sheet plus changes due to power supply voltage (PSRR), common mode voltage (CMRR), output voltage (A

1.4 DESCRIPTION

Figure 1-2 sho ws th e blo ck dia gr a m fo r the MCP6 V0 1 In pu t Offset Demo Boar d.

includes the specified input offset voltage va lue found in the dat a

) and temperature (ΔVOS/ΔTA).

) under a variety of bias

FIGURE 1-2: Block Diagram.

This circuit does the following:

• Supports Microchip’s auto-zeroed, single op amps:

-SOIC-8 package

- Used as both Device Under Test (DUT) and in a difference amplifier

• Test points for connecting lab equipment

• Single supply configuration

• The bias inputs V

•The V

/2 Reference uses a resistor ladder to divide VDD in half, then buffers that

, VCM and GND set the conditions for the DUT

voltage with an op amp in unity gain

•The V

Reference:

- Has a resistor divider at the input that sets V

CM=VDD

/2 when that input is left

open

- When V effect on V

-VCM is buffered

is driven by an external voltage source, the resistor divider has n o

• The High Gain Feedback Network and DUT together:

- Have a noise gain of G

≈ 10.0 kV/V

- Have a common mode gain of 1 V/V

- Produce an output voltage of G

NVOS+VCM

Product Overview

• The Difference Amplifier (Diff. Amp.):

- Rejects the DUT’s common mode output (V

- Provides additional gain (G

≈ 10.0 V/V) to the term GNVOS at the DUT’s

output

- Shifts the output so it is centered on the reference V

- Produce an output voltage of G

DAGNVOS+VDD

The inputs:

• Allow the DUT to be biased at most valid bias points

• Allow V

to set by the circuit at VDD/2, or set by the user

The outputs:

• Make it easy to measure the important bias voltages V

• Make it easy to measure VM–VDD/2 = GDAGNV

)

REF=VDD

/2 and V

MCP6V01 Input Offset Demo Board User’s Guide

NOTES:

Chapter 2. Installation and Operation

Power Supply

Power Supply VCM – GND

VDD – GND

Voltmeter

VDD/2 – GND

Voltmeter

VM –VDD/2

Voltmeter VCM – GND

Voltmeter

VO1–GND

2.1 INTRODUCTION

This chapter shows how to set up the MCP6V01 Input Offset Demo Board. Items discussed in this chapter include:

• Required Tools

• Connecting the Lab Equipment

• Operating Conditions

• Calculating the DUT’s Input Offset Voltage (V

• Converting Input Offset Voltage to Other Parameters

• Reducing the Measurement Noise

2.2 REQUIRED TOOLS

• Lab Power Supplies:

- Two outputs

- 0V to 5.5V minimum range

- Adjustable

• One Voltmeter:

- 1 mV resolution

- -6V to +6V minimum range

- Differential measurement (e.g., hand held meter)

MCP6V01 INPUT OFFSET

DEMO BOARD USER’S GUIDE

)

2.3 CONNECTING THE LAB EQUIPMENT

Lab equipment is connected to this board as shown in F igure 2-1. The (surface mount) test points allow lab equipment to be connected to these boards. The power supplies are connected at the right. The voltmeter is connected at the four different points shown.

FIGURE 2-1: Board Connections for the MCP6V01 Input Offset Demo Board.

MCP6V01 Input Offset Demo Board User’s Guide

OST

VMVDD2⁄–()1GDAG

()⁄()⋅=

Where:

1/(G

DAGN

) ≈ 10.0 µV/V

2.4 OPERATING CONDITIONS

This board works most effectively at room temperature (near +25°C). Measurements at other temperatures should be done in an oven where the air velocity is minimal.

The power supply (V The common mode voltage (V

operation of this demo board.

2.5 CALCULATING THE DUT’S INPUT OFFSET VOLTAGE

) should be between 1.8V and 5.5V.

) needs to be between 0.3V and VDD– 0.3V for proper

The DUT’s total input offset voltage (V

) can be calculated from a measurement as

OST

shown in Equation 2-1.

EQUATION 2-1:

2.6 CONVERTING INPUT OFFSET VOLTAGE TO OTHER PARAMETERS

2.6.1 Theory

Changing the bias voltages changes the input offset voltage. Microchip’s application note AN1 177 discusses in detail how these changes in V found in our data sheets. The following list summarizes the p arameters that contribute to V

OST

• Specified Input Offset Voltage:

-V

= Input offset at the specified bias point

• DC Common Mode Rejection Ratio:

- CMRR = ΔV

/ΔV

• DC Power Supply Rejection Ratio:

- PSRR = (ΔV

– ΔVSS)/ΔV

• DC Open-Loop Gain:

-A

= ΔV

OUT

/ΔV

• Input Offset Drift over Temperature:

- ΔV

/ΔT

are related to specifications

Note: The data sheet Input Of fset Voltage (VOS) specification applies to one bias

point and temperature only. The total input offset voltage (V V

and other changes in input offset as bias voltages and temperature

) includes

OST

change.

Installation and Operation

Given:

Then:

OST

=0.5µV, VCM=0V

OST

=1.0µV, VCM=5V

ΔV

OST

=0.5µV

ΔV

=5.0V

CMRR = 5.0V / 0.5 µV

=10V/µV = 140 dB

Example 2-1 gives an example of how V voltage (V

changes with the common mode input

OST

EXAMPLE 2-1: COMMON MODE CHANGE EXAMPLE

2.6.2 Application

When the common mode voltage (VCM) is changed on this demo board, the output voltage (V to independently change V Open-Loop Gain (A

Note: V

) is forced to change by the same amount. There is no means provided

OUT

) effect from the CMRR effect using this board.

cannot be changed independently of VCM, so AOL and CMRR cannot

OUT

and V

. Thus, it is not possible to separate the

OUT

be distinguished using this circuit.

Since A attribute most of the change to CMRR and ignore A

is usually much better than CMRR for the MCP6V0X op amps, we can

in most cases. Table 2-1 shows

one possible measurement matrix that will allow the user to estimate key parameters for the DUT.

TABLE 2-1: MEASUREMENT MATRIX

Operating Inputs

(Note 1)

(°C)

(V)

+25 5.5 OFF V

1.8 VDD/3 V

-40 5.5 VDD/3 V

+85 VDD/3 V

+125 VDD/3 V

(V)

/3 V

0.5 V

5.0 V

0.3 V

1.5 V

Symbol Comments

M1 M2 M3 M4 M5 M6 M7 M8 M9

M10

Quick Check VOS and PSRR CMRR and A

VOS and PSRR CMRR and A

VOS at temperature and ΔVOS/ΔT

Note 1: VSS=GND=0V. VCM= OFF means that the its power supply is off (VCM=VDD/2).

≈ VCM.

OUT

Measurement

Based on these measurements, we can make the following estimates, where the V

values are calculated from the measured VMk values (see Equation 2-1):

OST_k

MCP6V01 Input Offset Demo Board User’s Guide

TABLE 2-2: ESTIMATES

Operating Inputs Estimate

(V)

1.8 and 5.5 -40 to +125 1/AOL= 0, by assumption µV/V

5.5 -40 V

1.8 +25 VOS=V

Note 1: V

OST_k

Obviously, other values of T

(°C)

+25 1/PSRR = (V

+25 V +85 VOS=V

+125 VOS=V

-40 to +125 ΔV +25 1/CMRR = {(V

is calculated from VMk using Equation 2-1.

, VDD, … can be used instead, with the proper adjustment s

/ΔTA=(V

1/CMRR = (V

to these equations.

2.7 REDUCING THE MEASUREMENT NOISE

The noise seen in the measurements is a result of the design choices made for the MCP6V01 Input Offset Demo Board. The component s R12 and C5 set a lowpass po le at 0.16 Hz, which gives reasonable noise performance (±0.2 µV of the DUT) and settling time (1 to 2 seconds).

To achieve lower noise in your results, average many measurements together. For instance, measuring the output (V samples) should produce an estimate with noise √16 = 4 times lower (i.e., ±0.05 µV

There is a practical limit on increasing the sample rate; the noise does not improve significantly after a certain point. The analog lowpass pole at 0.16 Hz causes closely spaced samples to be correlated. To avoid the overhead caused by sampling too fast, keep the sampling period near or above the pole’s time constant (1.0s); this gives a minimum sample rate of 1 sample per second.

M–VDD

Equations (Note 1) Units

)/(3.7V) µV/V

) / (165°C) µV/°C

)/(4.5V) µV/V

)/(1.2V) µV/V

referred to the input

OS OS

OST_2–VOST_5

OST_8

OST_2 OST_9 OST_10

OST_10–VOST_8

OST_4–VOST_3

OST_5

OST_7–VOST_6

/2) once a second for 16 seconds (16

µV µV µV µV

µV

Note: Sampling much faster than 1 SPS will not improve the averaged noise of

this board’s output significantly.

Chapter 3. Possible Modifications

Label

DUT’s Pin 1

Reference Designator

3.1 INTRODUCTION

This chapter shows simple modifications to the MCP6V01 Input Offset Demo Board:

• Changing the DUT

• Connecting a Chip Select Pin to Ground

3.2 CHANGING THE DUT

Change the DUT (see Figure 3-1) to the MCP6V06 Op Amp as follows:

1. Remove U1 from the PCB, using a de-soldering tool.

2. Solder a MCP6V06 op amp in its place. Use a MCP6V06 in a SOIC-8 package. Pin 1 is next to the U1 reference designator on the PCB (not next to the DUT label)

MCP6V01 INPUT OFFSET

DEMO BOARD USER’S GUIDE

FIGURE 3-1: Location and Orientation of DUT.

MCP6V01 Input Offset Demo Board User’s Guide

DUT’s Pin 8 Ground Via

3.3 CONNECTING A CHIP SELECT PIN TO GROUND

The DUT can be changed to the MCP6V03 or MCP6V08 op amps with chip select. If desired, their Chip Select pin (pin 8) can be forced to ground. This is done as follows (see Figure 3-2):

1. Solder one end of a wire to the DUT’s pin 8. Pin 8 is next to the U1 reference designator on the PCB (not next to the DUT label)

2. Solder the other end of the wire the closest ground via on the PCB. The striped green arrow to the right in the figure shows the location. The solid green curve represents the wire.

FIGURE 3-2: Location and Orientation of DUT.

Appendix A. Schematics and Layouts

A.1 INTRODUCTION

This appendix contains the schematics and layouts for the MCP6V01 Input Offset Demo Board.

The Gerber files for this board are available on the Microchip website (www.microchip.com) and are contained in the “00227R3_Gerbers.zip” zip file .

A.2 SCHEMATIC

See below the circuit diagram. On the left is the DUT (U1), which produces the common mode voltage plus the DUT’s input offset (V difference amplifier that amplifies and level shifts the DUT’s output minus the mid-supply reference voltage. On the top ri ght is the mid-supply reference (V buffer. On the middle right is the common mode voltage reference (VCM) with buffer. On the bottom are the supply bypass capacitors and filter resistors.

MCP6V01 INPUT OFFSET

DEMO BOARD USER’S GUIDE

) times a gain. In the middle is the

/2) and

MCP6V01 Input Offset Demo Board User’s Guide

A.2 BOARD SCHEMATIC (Continued)

Schematics and Layouts

A.3 COMBINATION OF THE TOP SILK SCREEN AND TOP METAL LAYERS

A.4 TOP SILK SCREEN

MCP6V01 Input Offset Demo Board User’s Guide

A.5 TOP METAL LAYER

A.6 BOTTOM METAL LAYER

MCP6V01 INPUT OFFSET

DEMO BOARD USER’S GUIDE

Appendix B. Bill Of Materials (BOM)

B.1 MCP6V01 INPUT OFFSET DEMO BOARD BOM

The BOM in Table B-1 corresponds to Figure 2-1; it shows all of the components assembled on the PCB. Table B-2 shows additional parts that come in the ESD protection bag that the user, if needed, installs.

TABLE B-1: BILL OF MATERIALS FOR ASSEMBLED PCB

Qty Reference Description Manufacturer Part Number

7 C3, C4, C7, C10,

C14, C17, C18 5 C1, C2, C8, C13, C16 1.0 µF, 1206 SMD, X7R, 16V, 10% ECJ-3YB1C105K 5 C5, C6, C9, C11, C15 10 µF, 1206 SMD, X7R, 16V, 10% ECJ-3YX1C106K 1 C12 100 µF, Radial, Electrolytic, 10 V, 20% EEU-FC1A101S 1 PCB 2 layer PCB (2.20 in × 2.00 in) n/a n/a 2 R7, R10 33.2 kΩ, 0603 SMD, 0.1%, 25 ppm/°C,

2 R8, R11 332 kΩ, 0603 SMD, 0.1%, 25 ppm/°C,

3 R23, R24, R25 10.0Ω, 0603 SMD, 1%, 1/10W Panasonic-ECG ERJ-3EKF10R0V 2 R1, R2 20.0Ω, 0603 SMD, 1%, 1/10W ERJ-3EKF20R0V 2 R21, R22 49.9Ω, 0603 SMD, 1%, 1/10W ERJ-3EKF49R9V 1R4 1.00kΩ, 0603 SMD, 1%, 1/10W ERJ-3EKF1001V 2 R5, R9 3.01 kΩ, 0603 SMD, 1%, 1/10W ERJ-3EKF3011V 1 R19 10.0 kΩ, 0603 SMD, 1%, 1/10W ERJ-3EKF1002V 5 R6, R12, R15, R16,

R20 2 R17, R18 182 kΩ, 0603 SMD, 1%, 1/10W ERJ-3EKF1823V 1 R3 196 kΩ, 0603 SMD, 1%, 1/10W ERJ-3EKF1963V 2 R13, R14 200 kΩ, 0603 SMD, 1%, 1/10W ERJ-3EKF2003V 2 U1, U2 MCP6V01, SOIC-8, Single Op Amp Microchip 1 U3 MCP6002, SOIC-8, Dual Op Amp MCP6002-E/SN 7 TP1 – TP7 SMD, Test Point Keystone

Note 1: 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.

100 nF, 060 3 SMD, X7R, 16V, 10% Panasonic

Susumu Co. Ltd. RG1608P-3322-B-T5

1/10W

100 kΩ, 0603 SMD, 1%, 1/10W ERJ-3EKF1003V

Technology Inc.

Electronics

-ECG ECJ-1VB1C104K

RG1608P-3323-B-T5

MCP6V01-E/SN

5016

TABLE B-2: BILL OF MATERIALS FOR LOOSE PARTS IN BAG

Qty. Reference Designator Description Manufacturer Part Number

4 (for PCB mounting) Stand-off, Hex, 0.500", 4 × 40 Thread,

Nylon, 0.285" max. O.D.

4 (for PCB mounting) Machine Screw, Phillips, 4 × 40 Thread,

1/4" long, Nylon

Keystone Electronics

Building Fasteners

1902C

NY PMS 440 0025 PH

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

Atlanta

Duluth, GA Tel: 678-957-9614 Fax: 678-957-1455

Boston

Westborough, MA Tel: 774-760-0087 Fax: 774-760-0088

Chicago

Itasca, IL Tel: 630-285-0071 Fax: 630-285-0075

Cleveland

Independence, OH Tel: 216-447-0464 Fax: 216-447-0643

Dallas

Addison, TX Tel: 972-818-7423 Fax: 972-818-2924

Detroit

Farmington Hills, MI Tel: 248-538-2250 Fax: 248-538-2260

Kokomo

Kokomo, IN Tel: 765-864-8360 Fax: 765-864-8387

Los Angeles

Mission Viejo, CA Tel: 949-462-9523 Fax: 949-462-9608

Santa Clara

Santa Clara, CA Tel: 408-961-6444 Fax: 408-961-6445

Toronto

Mississauga, Ontario, Canada Tel: 905-673-0699 Fax: 905-673-6509

ASIA/PACIFIC

Asia Pacific Office

Suites 3707-14, 37th Floor Tower 6, The Gateway Harbour City, Kowloon Hong Kong Tel: 852-2401-1200 Fax: 852-2401-3431

Australia - Sydney

Tel: 61-2-9868-6733 Fax: 61-2-9868-6755

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Tel: 86-10-8528-2100 Fax: 86-10-8528-2104

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ASIA/PACIFIC

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UK - Wokingham

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

03/26/09

Microchip Technology MCP6V01 Input Offset Demo Board User guide

Specifications and Main Features

Frequently Asked Questions

User Manual

Preface

INTRODUCTION

DOCUMENT LAYOUT

CONVENTIONS USED IN THIS GUIDE

RECOMMENDED READING

THE MICROCHIP WEB SITE

CUSTOMER SUPPORT

DOCUMENT REVISION HISTORY

Chapter 1. Product Overview

1.1 INTRODUCTION

1.2 KIT CONTENTS

1.3 INTENDED USE

1.4 DESCRIPTION

Chapter 2. Installation and Operation

2.1 INTRODUCTION

2.2 REQUIRED TOOLS

2.3 CONNECTING THE LAB EQUIPMENT

2.4 OPERATING CONDITIONS

2.5 CALCULATING THE DUT’S INPUT OFFSET VOLTAGE

2.6 CONVERTING INPUT OFFSET VOLTAGE TO OTHER PARAMETERS

2.7 REDUCING THE MEASUREMENT NOISE

Chapter 3. Possible Modifications

3.1 INTRODUCTION

3.2 CHANGING THE DUT

3.3 CONNECTING A CHIP SELECT PIN TO GROUND

Appendix A. Schematics and Layouts

A.1 INTRODUCTION

A.2 SCHEMATIC

A.3 COMBINATION OF THE TOP SILK SCREEN AND TOP METAL LAYERS

A.4 TOP SILK SCREEN

A.5 TOP METAL LAYER

A.6 BOTTOM METAL LAYER

Appendix B. Bill Of Materials (BOM)

B.1 MCP6V01 INPUT OFFSET DEMO BOARD BOM

WORLDWIDE SALES AND SERVICE

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China - Shanghai

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UK - Wokingham