Texas Instruments DAC7571 Manual de usuario

DAC7571, DAC6571, DAC5571,

DAC7574, DAC6574, DAC5574,

and DAC8571 Evaluation Module

February 2004 Data Acquisition

User’s Guide

-3

Read This First

Preface

Read This First

About This Manual

This user’s guide describes the DAC7574, DAC6574, DAC5574, DAC7571,

DAC6571, DAC5571, and DAC8571 evaluation module. It covers the

operating procedures and characteristics of the EVM board along with the

devices that it supports.

How to Use This Manual

This document contains the following chapters:

Chapter 1 – EVM Overview

Chapter 2 – PCB Design and Performance

Chapter 3 – EVM Operation

Information About Cautions and Warnings

This book may contain cautions and warnings.

This is an example of a caution statement.

A caution statement describes a situation that could potentially

damage your software or equipment.

This is an example of a warning statement.

A warning statement describes a situation that could potentially

cause harm to you.

-4

The information in a caution or a warning is provided for your protection.

Please read each caution and warning carefully.

Related Documentation From Texas Instruments

To obtain a copy of any of the following TI documents, call the Texas

Instruments Literature Response Center at (800) 477–8924 or the Product

Information Center (PIC) at (972) 644–5580. When ordering, identify this

manual by its title and literature number. Updated documents can also be

obtained through our website at www.ti.com.

Data Sheets: Literature Number:

DAC7574 SLAS375

DAC6574 SLAS408

DAC5574 SLAS407

DAC7571 SLAS374

DAC6571 SLAS406

DAC5571 SLAS405

DAC8571 SLAS373A

REF02 SBVS-003A

OPA627 PDS-998H

Questions about this or other Data Converter EVMs?

If you have questions about this or other Texas Instruments Data Converter

evaluation modules, feel free to e-mail the Data Converter Application Team

at datacnvapp[email protected] Include in the subject heading the product you

have questions or concerns with.

FCC Warning

This equipment is intended for use in a laboratory test environment only. It gen-

erates, uses, and can radiate radio frequency energy and has not been tested

for compliance with the limits of computing devices pursuant to subpart J of

part 15 of FCC rules, which are designed to provide reasonable protection

against radio frequency interference. Operation of this equipment in other en-

vironments may cause interference with radio communications, in which case

the user at his own expense will be required to take whatever measures may

be required to correct this interference.

Trademarks

I2C is a trademark of Phillips Corporation.

-5

Contents

1 EVM Overview 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.1 Features 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 Power Requirements 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2.1 Supply Voltage 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2.2 Reference Voltage 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3 EVM Basic Functions 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 PCB Design and Performance 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1 PCB Layout 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2 EVM Performance 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.3 Bill of Materials 2-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 EVM Operation 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1 Factory Default Setting 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2 Host Processor Interface 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3 EVM Stacking 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4 The Output Op Amp 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4.1 Unity Gain Output (Default Configuration) 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4.2 Output Gain of Two 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.5 Jumper Setting 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.6 Schematic 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

-6

Figures

1-1 EVM Block Diagram 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-1 Top Silkscreen 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-2 Layer 1 (Top Signal Plane) 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-3 Layer 2 (Ground Plane) 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-4 Layer 3 (Power Plane) 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-5 Layer 4 (Bottom Signal Plane) 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-6 Bottom Silkscreen 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-7 Drill Drawing 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-8 DAC7574EVM Test Parameters and Results 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-9 INL and DNL Characterization Graph of DAC7574 Channel A 2-7. . . . . . . . . . . . . . . . . . . . . . .

2-10 INL and DNL Charactaerization Graph of DAC7574 Channel B 2-8. . . . . . . . . . . . . . . . . . . . .

2-11 INL and DNL Characterization Graph of DAC7574 Channel C 2-9. . . . . . . . . . . . . . . . . . . . . .

2-12 INL and DNL Characterization Graph of DAC7574 Channel D 2-10. . . . . . . . . . . . . . . . . . . . .

2-13 DAC8571EVM Test Parameters and Results 2-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-14 INL and DNL Characterization Graph of DAC8571 2-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Tables

1-1 Featured DAC Selections 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-1 Parts List 2-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-1 DACx574EVM Factory Default Jumper Setting 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-2 DACx571EVM Factory Default Jumper Setting 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-3 DAC8571EVM Factory Default Jumper Setting 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-4 DACx571 Output Channel Mapping 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-5 DAC8571 Output Channel Mapping 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-6 DACx574 Output Channel Mapping 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-7 DACx574 I2C Slave Address Map 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-8 DACx571 I2C Slave Address Map 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-9 DAC8571 I2C Slave Address Map 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-10 Unity Gain Output Jumper Settings 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-11 Gain of Two Output Jumper Settings 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-12 Jumper Setting Function 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

-8

IMPORTANT NOTICE

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections,

modifications, enhancements, improvements, and other changes to its products and services

at any time and to discontinue any product or service without notice. Customers should obtain

the latest relevant information before placing orders and should verify that such information is

current and complete. All products are sold subject to TI’s terms and conditions of sale supplied

at the time of order acknowledgment.

TI warrants performance of its hardware products to the specifications applicable at the time of

sale in accordance with TI’s standard warranty. Testing and other quality control techniques are

used to the extent TI deems necessary to support this warranty. Except where mandated by

government requirements, testing of all parameters of each product is not necessarily

performed.

TI assumes no liability for applications assistance or customer product design. Customers are

responsible for their products and applications using TI components. To minimize the risks

associated with customer products and applications, customers should provide adequate

design and operating safeguards.

TI does not warrant or represent that any license, either express or implied, is granted under any

TI patent right, copyright, mask work right, or other TI intellectual property right relating to any

combination, machine, or process in which TI products or services are used. Information

published by TI regarding third-party products or services does not constitute a license from TI

to use such products or services or a warranty or endorsement thereof. Use of such information

may require a license from a third party under the patents or other intellectual property of the third

party, or a license from TI under the patents or other intellectual property of TI.

Reproduction of information in TI data books or data sheets is permissible only if reproduction

is without alteration and is accompanied by all associated warranties, conditions, limitations, and

notices. Reproduction of this information with alteration is an unfair and deceptive business

practice. TI is not responsible or liable for such altered documentation.

Resale of TI products or services with statements different from or beyond the parameters stated

by TI for that product or service voids all express and any implied warranties for the associated

TI product or service and is an unfair and deceptive business practice. TI is not responsible or

liable for any such statements.

Following are URLs where you can obtain information on other Texas Instruments products and

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Products Applications

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Mailing Address: Texas Instruments

Post Office Box 655303 Dallas, Texas 75265

-9

EVM IMPORTANT NOTICE

Texas Instruments (TI) provides the enclosed product(s) under the following conditions:

This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR

EVALUATION PURPOSES ONLY and is not considered by TI to be fit for commercial use. As

such, the goods being provided may not be complete in terms of required design-, marketing-,

-10

EVM WARNINGS AND RESTRICTIONS

It is important to operate this EVM within the input voltage range of 0 V - VDD +0.3 V and the

output voltage range of ±10 V.

Exceeding the specified input range may cause unexpected operation and/or irreversible

damage to the EVM. If there are questions concerning the input range, please contact a TI field

representative prior to connecting the input power.

Applying loads outside of the specified output range may result in unintended operation and/or

possible permanent damage to the EVM. Please consult the EVM User’s Guide prior to

connecting any load to the EVM output. If there is uncertainty as to the load specification, please

contact a TI field representative.

During normal operation, some circuit components may have case temperatures greater than

100°C. The EVM is designed to operate properly with certain components above 100°C as long

as the input and output ranges are maintained. These components include but are not limited

to linear regulators, switching transistors, pass transistors, and current sense resistors. These

types of devices can be identified using the EVM schematic located in the EVM User’s Guide.

When placing measurement probes near these devices during operation, please be aware that

these devices may be very warm to the touch.

Mailing Address:

Texas Instruments

Post Office Box 655303

Dallas, Texas 75265

1-1

EVM Overview

This chapter provides an overview of the DAC7574, DAC6574, DAC5574,

DAC7571, DAC6571, DAC5571, and DAC8571 evaluation module (EVM),

and instructions on setting up and using this module.

Topic Page

1.1 Features 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 Power Requirements 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3 EVM Basic Functions 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 1

Features

1-2

1.1 Features

This EVM features the DAC7574, DAC6574, DAC5574, DAC7571, DAC6571,

DAC5571, and DAC8571 digital-to-analog converter (DAC). It provides a

quick and easy way to evaluate the functionality and performance of the

high-resolution as well as the low-resolution I2C-input DACs. Although the

EVM supports seven DAC types, only the selected DAC and its associated

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