Texas Instruments THS4131 Bedienungsanleitung

THS4131

EVM User's Guide for HighĆSpeed

Full ĆDifferential Amplifier

February 2001 Mixed-Signal Products

User’s Guide

SLOU110

IMPORTANT NOTICE

TexasInstrumentsand itssubsidiaries(TI) reservetheright tomakechanges totheirproducts orto discontinue

any product or service without notice, and advise customers to obtain the latest version of relevant information

to verify, before placing orders, that information being relied on is current and complete. All products are sold

subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those

pertaining to warranty, patent infringement, and limitation of liability.

TI warrants performance of its products to the specifications applicable at the time of sale in accordance with

TI’sstandardwarranty.TestingandotherqualitycontroltechniquesareutilizedtotheextentTIdeemsnecessary

to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except

those mandated by government requirements.

Customers are responsible for their applications using TI components.

In order to minimize risks associated with the customer’s applications, adequate design and operating

safeguards must be provided by the customer to minimize inherent or procedural hazards.

TIassumes no liabilityforapplications assistanceorcustomer product design.TIdoes notwarrantor represent

thatanylicense,eitherexpressorimplied,isgrantedunderanypatentright,copyright,mask workright,orother

intellectual property right of TI covering or relating to any combination, machine, or process in which such

products or services might be or are used. TI’s publication of information regarding any third party’s products

or services does not constitute TI’s approval, license, warranty or endorsement thereof.

Reproduction of information in TI data books or data sheets is permissible only if reproduction is without

alterationand isaccompanied by allassociatedwarranties,conditions,limitationsandnotices. Representation

or reproduction of this information with alteration voids all warranties provided for an associated TI product or

service, is an unfair and deceptive business practice, and TI is not responsible nor liable for any such use.

Resale of TI’s 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,

is an unfair and deceptive business practice, and TI is not responsible nor liable for any such use.

Also see: Standard Terms and Conditions of Sale for Semiconductor Products. www.ti.com/sc/docs/stdterms.htm

Mailing Address:

Texas Instruments

Post Office Box 655303

Dallas, Texas 75265

iii

Read This First

Preface

About This Manual

This manual is written to provide information about the evaluation module of

the fully differential amplifier under test. Additionally, this document provides

a good example of PCB design for high speed applications. The user should

keep in mind the following points.

The design of the high-speed amplifier PCB is an elegant and sensitive

process. Therefore, the user must approach the PCB design with care and

awareness. It is recommend that the user initially review the datasheet of the

device under test. It is also helpful to review the schematic and layout of the

THS4131 EVM to determine the design techniques used in the evaluation

board.In addition, itis recommended thatthe user reviewthe application note

Fully-Differential Amplifiers

(literature number SLOA054B) to gain more

insight about differential amplifiers. This application note reviews the

differential amplifiers and presents calculations for various filters.

How to Use This Manual

Chapter 1—Introduction and Description

Chapter 2—Using the THS4131 EVM

Chapter 3—General High-Speed Amplifier Design Considerations

Related Documentation From Texas Instruments

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.

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

THS4131 data sheet (literature number SLOS318)

THS4131 application report (literature number SLOA054A),

Fully-Differential Amplifiers

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

testedforcompliance withthelimits ofcomputingdevices pursuant tosubpart

Jofpart15ofFCCrules,whicharedesignedtoprovidereasonableprotection

against radio frequency interference. Operation of this equipment in other

environments 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

PowerPAD is a trademark of Texas Instruments.

Running Title—Attribute Reference

Chapter Title—Attribute Reference

Contents

1 Introduction and Description 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.1 Description 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 Evaluation Module Features 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3 THS4131 EVM Specifications 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.4 Schematic of the Populated Circuit (Default Configuration) 1-3. . . . . . . . . . . . . . . . . . . . . . .

1.5 THS4131 EVM Schematic 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.6 Additional Sample Schematics 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.7 THS4131 EVM Layout 1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 Using the THS4131 EVM 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1 Required Equipment 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2 Power Supply Setup 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.3 Input and Output Setup 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.4 Testing the EVM Setup 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.5 Power Down Verification 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.6 Measuring the Frequency Response 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.7 Butterworth Filter 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.8 THS4131 EVM Bill of Materials 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 General High-Speed Amplifier Design Considerations 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Running Title—Attribute Reference

Figures

1–1 Schematic of the Populated Circuit on the EVM (Default Configuration) 1-3. . . . . . . . . . . . . .

1–2 Schematic 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–3 Fully-Differential In/Fully-Differential Out, Without Transformer 1-5. . . . . . . . . . . . . . . . . . . . . .

1–4 Fully-Differential In/Fully-Differential Out, Utilizing Transformer 1-5. . . . . . . . . . . . . . . . . . . . . .

1–5 VICR Level Shifter 1-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–6 Butterworth Filter With Multiple Feedback 1-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–7 Top Layer (Silkscreen) 1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–8 Top (Layer 1) (Signals) 1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–9 Internal Plane (Layer 2) (Ground Plane) 1-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–10 Internal Plane (Layer 3) (+ VCC Plane) 1-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–11 Bottom (Layer 4) (Ground and Signal) 1-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–1 Power Supply Connection 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–2 Signal Connections 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–3 Driver 1 Output Signal 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–4 Multiple Feedback Filter Circuit 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–5 Gain vs Phase 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Tables

2–1 THS4131 EVM Bill of Materials 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1

Introduction and Description

The Texas Instruments THS4131 evaluation module (EVM) helps designers

evaluate the performance of the THS4131 operational amplifier. Also, this

EVM is a good example of high-speed PCB design.

This document details the Texas Instruments THS4131 high-speed

operational amplifier evaluation module (EVM). It includes a list of EVM

features,abriefdescriptionofthemoduleillustratedwithaseriesofschematic

diagrams, EVM specifications, details on connecting and using the EVM, and

a discussion of high-speed amplifier design considerations.

ThisEVMenablestheusertoimplementvariouscircuitstoclarifytheavailable

configurations presented by the schematic of the EVM. In addition, the

schematic of the default circuit has been added to depict the components

mounted on the EVM when it is received by the customer. This configuration

correlates to the single input/differential output signal.

Othersamplecircuitsarepresentedtoshowhowtheusercanimplementother

circuit configurations such as differential input/differential output signal,

transformer utilization on the input and output terminals, VICR level shifter,

and Butterworth filter with multiple feedback. The user may be able to create

and implement circuit configurations in addition to those presented in this

document using the THS4131 EVM.

Topic Page

1.1 Description 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 Evaluation Module Features 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3 THS4131 EVM Specification 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.4 Schematic of the Populated Circuit (Default Configuration) 1-3. . . . . . .

1.5 THS4131 EVM Schematic 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.6 Additional Sample Schematics 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.7 THS4131 EVM Layout 1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 1

Description

1-2

Introduction and Description

1.1 Description

The THS4131 EVM is a good example of PCB design and layout for

high-speed operational amplifier applications. It is a complete circuit for the

high-speed operational amplifier. The EVM is made of the THS4131

high-speed operational amplifier, a number of passive components, and

various features and footprints that enable the user to experiment, test, and

verify various operational amplifier circuit implementations. The board

measures 4.5 inches in length by 2.5 inches in width. Initially, this board is

populated for a single-ended input amplifier (see Figure 1-2 for populated

circuits). The outputs (VO+ and VO–) can be tested differentially or single

ended. Gain is set to one and can be changed by changing the ratios of the

feedback and gain resistors (see the device datasheet for recommended

resistor values). The user may populate various footprints on the evaluation

moduleboard to verifyfilter designsor perform other experiments. Eachinput

isterminatedwitha50-Ωresistorto provide correctline-impedancematching.

1.2 Evaluation Module Features

THS4131 high-speed operational amplifier EVM features include:

Voltage supply operation range: 5-V to ±15-V operation (see the

device data sheet)

Single and differential input and output capability

Nominal 50-Ωinput and output termination resistors. They can be

configured according to the application requirement.

VOCM direct input control (see schematic and the device data sheet)

VOCM pin can be controlled via transformer center-tap (see

schematic)

Shutdown pin control, JU1 (if applicable to the device, see the device

data sheet)

Input and output transformer footprints for changing single-ended

signals to differential signals

Footprint for high-precision, balanced feedback and gain resistors

(0.01% or better)

Footprints for low-pass filter implementation (see application note

SLOA054A)

Footprints for antialiasing filter implementation (see application note

SLOA054A)

Differential probe terminals on input and output nodes for differential

probe insertion

Various GND and signal test points on the PCB

Circuit schematic printed on the back of the EVM

A good example of high-speed amplifier PCB design and layout

THS4131 EVM Specifications

1-3

Introduction and Description

1.3 THS4131 EVM Specifications

Supply voltage range, ±VCC 5 V to ±15 V (see the device data sheet). . . .

Supply current, ICC (see the device data sheet). . . . . . . . . . . . . . . . . . . . . . . .

Output drive, IO, VCC = ±15 (see the device data sheet). . . . . . . . . . . . . . . . .

For complete THS4131 amplifier IC specifications, parameter measurement

information, and additional application information, see the THS4131 data

sheet, TI literature number SLOS318.

1.4 Schematic of the Populated Circuit (Default Configuration)

For verification of jumper locations and other bypass components, see the

complete EVM schematic in Figure 1–2.

Figure 1–1.Schematic of the Populated Circuit on the EVM (Default Configuration)

374 Ω

–

THS4131

–

VCC

VCC–

402 Ω

0 Ω

VIN

AC 0 Ω

0 Ω

RX1

0 Ω

R1b

R1a 374 Ω

R3b

R3a

R6a

C1 VOCM

R4b

R4a 0 Ω

0 Ω

Rx4

Rx5 49.9 Ω

49.9 Ω

R10

Rx6

50 Ω

Source

NOTE: Default populated footprints on the EVM from the input nodes to the output terminals Gain = 1

402 Ω

R6B

RX3

49.9 Ω

JU4

JU3

Rx0

24.9 Ω

THS4131 EVM Schematic

1-4

Introduction and Description

1.5 THS4131 EVM Schematic

Figure 1–2.Schematic

Dieses Handbuch passt für folgende Modelle

Inhaltsverzeichnis

Andere Texas Instruments Hauptplatine Handbücher

Texas Instruments

Texas Instruments DRV2700EVM-HV500 Bedienungsanleitung

Texas Instruments

Texas Instruments TAS5706EVM2 Bedienungsanleitung

Texas Instruments

Texas Instruments ADC121S101EVM Bedienungsanleitung

Texas Instruments

Texas Instruments INA301EVM Bedienungsanleitung

Texas Instruments

Texas Instruments TPS7A91EVM-831 Bedienungsanleitung

Texas Instruments

Texas Instruments TUSB217EVM Bedienungsanleitung

Texas Instruments

Texas Instruments DLP LightCrafter Display 3010 Bedienungsanleitung

Texas Instruments

Texas Instruments TPS71401DRVEVM-426 Bedienungsanleitung

Texas Instruments

Texas Instruments ADS9224REVM-PDK Bedienungsanleitung

Texas Instruments

Texas Instruments DRV8329AEVM Bedienungsanleitung

Texas Instruments

Texas Instruments TPD3S714-Q1EVM Bedienungsanleitung

Texas Instruments

Texas Instruments TPS65217EVM Bedienungsanleitung

Texas Instruments

Texas Instruments TMS320DM365 EVM Bedienungsanleitung

Texas Instruments

Texas Instruments TMS320DM642 Bedienungsanleitung

Texas Instruments

Texas Instruments AWR2944 Bedienungsanleitung

Texas Instruments

Texas Instruments INA226EVM Bedienungsanleitung

Texas Instruments

Texas Instruments LP875761Q1EVM Bedienungsanleitung

Texas Instruments

Texas Instruments PGA411-Q1 EVM Bedienungsanleitung

Texas Instruments

Texas Instruments SimpleLink CC3301 Bedienungsanleitung

Texas Instruments

Texas Instruments ADS7043EVM-PDK Bedienungsanleitung

Texas Instruments

Texas Instruments TPS2543EVM Bedienungsanleitung

Texas Instruments

Texas Instruments TSW4200 Bedienungsanleitung

Texas Instruments

Texas Instruments INA4180 Bedienungsanleitung

Texas Instruments

Texas Instruments TMP110 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

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

Ski-Doo

Ski-Doo Bombardier MPEM 219 700 090 Bedienungsanleitung