Texas Instruments THS4141 - Manuals

Page 3 - Preface; About This Manual

iii Read This First Preface About This Manual This manual is written to provide information about the evaluation module ofthe fully differential amplifier under test. Additionally, this document providesa good example of PCB design for high speed applications. The user shouldkeep in mind the followi...

Page 4 - Information About Cautions and Warnings; This is an example of a caution statement.; Related Documentation From Texas Instruments

Related Documentation From Texas Instruments iv 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 potentiallydamage your software or equipment. This is an example of a w...

Page 5 - Contents; Introduction and Description

Running Title—Attribute Reference v Chapter Title—Attribute Reference Contents 1 Introduction and Description 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Description 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 6 - Figures

Running Title—Attribute Reference vi Figures 1–1 Schematic of the Populated Circuit on the EVM (Default Configuration) 1-3 . . . . . . . . . . . . . . 1–2 Schematic 1-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

Page 7 - Topic; Chapter 1

1-1 Introduction and Description Introduction and Description The Texas Instruments THS4141 evaluation module (EVM) helps designersevaluate the performance of the THS4141 operational amplifier. Also, thisEVM is a good example of high-speed PCB design. This document details the Texas Instruments THS4...

Page 9 - Schematic of the Populated Circuit (Default Configuration)

THS4141 EVM Specifications 1-3 Introduction and Description 1.3 THS4141 EVM Specifications Supply voltage range, ± V CC 5 V to ± 15 V (see the device data sheet) . . . . Supply current, I CC (see the device data sheet) . . . . . . . . . . . . . . . . . . . . . . . . Output drive, I O, V CC = ± 15 (s...

Page 10 - Figure 1–2. Schematic

THS4141 EVM Schematic 1-4 Introduction and Description 1.5 THS4141 EVM Schematic Figure 1–2. Schematic

Page 11 - Additional Sample Schematics

Additional Sample Schematics 1-5 Introduction and Description 1.6 Additional Sample Schematics For verification of jumper locations and other bypass components, see thecomplete EVM schematic in Figure 1–2. Figure 1–3. Fully-Differential In/Fully-Differential Out, Without Transformer + – THS4141 – + ...

Page 12 - Figure 1–5. VICR Level Shifter; Figure 1–6. Butterworth Filter With Multiple Feedback.

Additional Sample Schematics 1-6 Introduction and Description Figure 1–5. VICR Level Shifter + – THS4141 – + V CC 402 Ω 24.9 Ω 0 Ω V IN AC 0 Ω 0 Ω RX1 0 Ω R1b Rx0 374 Ω R3b R3a 374 Ω R6a C1 V OCM C4 C6 R4b R4a 0 Ω 0 Ω Rx4 Rx5 49.9 Ω 49.9 Ω R10 Rx6 50 Ω Source 402 Ω R6B RX3 49.9 Ω V CC RPU1 RPU2 V CC...

Page 17 - Chapter 2

2-1 Using the THS4141 EVM Using the THS4141 EVM It is recommended that the user perform the following exercises to learn theusage of the EVM. This practice helps the user learn about the variousterminals on the EVM and their function. In addition, it suggests thecomponents and equipment needed to op...

Page 18 - Required Equipment; Power Supply Setup; Figure 2–1. Power Supply Connection

2-2 Using the THS4141 EVM 2.1 Required Equipment - One double-output dc power supply ( ± 5 V, 100 mA output minimum) - Two dc current meters with resolution to 1 mA and capable of themaximum current the dc power supply can supply. If available, set thecurrent limit on the dc power supply to 100 mA. ...

Page 19 - Input and Output Setup; Figure 2–2. Signal Connections

2-3 Using the THS4141 EVM 2.3 Input and Output Setup 1) Ensure that JU3, JU4, and JU1 are not installed (open circuit). 2) Set the function generator to generate a 1 MHz, ± 0.5 V (1 V PP ) sine wave with no dc offset. 3) Turn off the function generator before proceeding to the next step. 4) Using a ...

Page 20 - Testing the EVM Setup; Figure 2–3. Driver 1 Output Signal

2-4 Using the THS4141 EVM 2.4 Testing the EVM Setup 1) Turn on the dc power supply. 2) Verify that both the +5 V (current meter 1) and the –5 V (current meter 2) currents are below 20 mA. Caution: Currents above 20 mA indicate a possible short or a wrong resistor valueon the PCB. Do not proceed unti...

Page 22 - Butterworth Filter; Figure 2–4. Multiple Feedback Filter Circuit

Butterworth Filter 2-6 Using the THS4141 EVM Note: Transformers are used to change the single ended signals to differentialsignal or vice versa. On this EVM, they can be populated according to theapplication or the experiment. The V OCM pin of the device may be connected to the center-tap of the tra...

Page 23 - Figure 2–5. Gain vs Phase; THS4141 EVM Bill of Materials

THS4141 EVM Bill of Materials 2-7 Using the THS4141 EVM Figure 2–5. Gain vs Phase Butterworth filter with multiple feedback frequency response. VIN = –1 dBmRL = 200 Ω Diff VCC = ± 15 0 –4 –10 0.1 1 Gain – dB 2 6 f – Frequency – MHz 10 10 500 100 –8 –2 4 8 Phase Gain 2.8 THS4141 EVM Bill of Materials...

Page 25 - General High-Speed Amplifier Design; Chapter 3

3-1 General High-Speed Amplifier Design Considerations General High-Speed Amplifier Design Considerations The THS4141 EVM layout has been designed for use with high-speed signalsand can be used as an example when designing PCBs incorporating theTHS4141. Careful attention has been given to component ...