Texas Instruments ADSDeSer-50EVM Bedienungsanleitung



 

January 2004

User’s Guide

SBAU091

High-Speed Converter Products

IMPORTANT NOTICE

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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-, and/or manufacturing-related protective

considerations, including product safety measures typically found in the end product incorporating the goods.

As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic

compatibility and therefore may not meet the technical requirements of the directive.

Should this evaluation kit not meet the specifications indicated in the EVM User’s Guide, the kit may be returned

within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE

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discharge.

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exclusive.

TI assumes no liability for applications assistance, customer product design, software performance, or

infringement of patents or services described herein.

Please read the EVM User’s Guide and, specifically, the EVM Warnings and Restrictions notice in the EVM

User’s Guide prior to handling the product. This notice contains important safety information about temperatures

and voltages. For further safety concerns, please contact the TI application engineer.

Persons handling the product must have electronics training and observe good laboratory practice standards.

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machine, process, or combination in which such TI products or services might be or are used.

Mailing Address:

Texas Instruments

Post Office Box 655303

Dallas, Texas 75265

EVM WARNINGS AND RESTRICTIONS

It is important to operate this EVM within the specified input and output ranges described in

the EVM User’s Guide.

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

60°C. The EVM is designed to operate properly with certain components above 60°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

Contents

iii

Contents

Preface

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About This Manual

This manual describes the ADSDeSer-50EVM evaluation fixture and how to

use it. Throughout this document, the abbreviation EVM and the term evalua-

tion module are synonymous with the ADSDeSer-50EVM.

Related Documentation From Texas Instruments

The following documents provide information regarding Texas Instruments

integrated circuits used in the assembly of the ADSDeSer-50EVM. These

documents are available from the TI web site. The last character of the lit-

erature number corresponds to the document revision, which is current at

the time of the writing of this User’s Guide. To obtain a copy of the following

TI documents, visit our website at http://www.ti.com/ or call the Texas In-

struments Literature Response Center at (800) 477−8924 or the Product

Information Center at (972) 644−5580. When ordering, identify the docu-

ment by both title and literature number.

Data sheet Literature number

ADS5270/71 Data Sheet SBAS293

ADS5275/76 Data Sheet SBAS300

If You Need Assistance

If you have questions regarding either the use of this evaluation module or

the information contained in the accompanying documentation, please con-

tact the Texas Instruments Product Information Center at (972) 644−5580

or visit the TI web site at www.ti.com.

Contents

FCC Warning

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

generates, uses, and can radiate radio frequency energy and has not been

tested for compliance with the limits of computing devices pursuant to sub-

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

protection against radio frequency interference. Operation of this equip-

ment in other environments may cause interference with radio communica-

tions, in which case the user at his own expense will be required to take

whatever measures may be required to correct this interference.

Trademarks

All trademarks are the property of their respective owners.

Contents

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

1.1 Introduction 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 Features 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3 Power Supply 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.4 Indicators 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 Board Configuration 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1 I/O Connectors 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1.1 Input 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1.2 JTAG 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1.3 FPGA and PROM Bypass and Configuration 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1.4 FPGA Configuration Pins 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1.5 Pushbuttons 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1.6 Output Connectors 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2 Start-up Sequence 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 Schematic and Layout 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1 Board Layout 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2 Schematic 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3 Bill of Materials 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents

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2−1. ADSDeSer-50EVM Overview 2-2

2−2. Default and Alternate Configurations for Programming the ADSDeSer-50EVM 2-3

2−3. Default Configurations for FPGA Pins on the ADSDeSer-50EVM 2-4

2−4. Output Connectors for the ADSDeSer-50EVM 2-5

2−5. Orientation of Ground Connections for the ADSDeSer-50EVM 2-5

3−1. ADSDeSer-50EVM—Layer 1 (Top) 3-2

3−2. ADSDeSer-50EVM—Layer 2 (Power) 3-3

3−3. ADSDeSer-50EVM—Layer 3 (Mid Signal) 3-4

3−4. ADSDeSer-50EVM—Layer 4 (Ground) 3-5

3−5. ADSDeSer-50EVM—Layer 5 (Bottom) 3-6

3−6. ADSDeSer-50EVM—Schematic 3-7



1−1. A/D Converter Models Supported by the ADSDeSer-50EVM 1-2. . . . . . . . . . . . . . . . . . . . . . . .

3−1. Bill of Materials 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1

Overview



The ADSDeSer-50EVM is an evaluation fixture designed for the ADS527x

family of data converters. It is an eight-channel LVDS deserializer.

Topic Page

1.1 Introduction 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 Features 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3 Power Supply 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.4 Indicators 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 1

Introduction

1-2

1.1 Introduction

The ADSDeSer-50EVM is designed to interface to the TI low voltage differen-

tial signal (LVDS) output data converters with an operating frequency of up to

50MHz and up to eight simultaneous data channels. The ADSDeSer-50EVM

provides an easy way to examine the serialized data output from the serialized

LVDS data converters by deserializing the data and converting to a standard

parallel data port. Since there is no clock embedded, a synchronous clock out-

put is provided separately, along with the eight channels of data.

The ADSDeSer-50EVM evaluation board will support the analog-to-digital

converter (ADC) models listed in Table 1−1.

Table 1−1.A/D Converter Models Supported by the ADSDeSer-50EVM

Model Features LVDS Channel Data Rate

ADS5270 12-bit, 40MSPS, 8-Channel 480MBPS

ADS5271 12-bit, 50MSPS, 8-Channel 600MBPS

ADS5275 10-bit, 40MSPS, 8-Channel 480MBPS

ADS5276 10-bit, 50MSPS, 8-Channel 600MBPS

1.2 Features

-Deserialize up to eight simultaneous channels of 10- and 12-bit data.

-Operates with LVDS output data converters up to 50MSPS.

-Clock signal is synchronous with data output.

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