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This document provides information about the evaluation module of the amplifier under test. Additionally,
this document provides a good example of printed-circuit board (PCB) design for high-speed applications.
Remember the following points:
•
TI recommends initially reviewing the data sheet of the device under test.
•
Review the schematic and layout of the THS3491RGT EVM to determine the design techniques used
in the evaluation board.
•
The high-speed amplifier PCB design should be approached with care and special attention must be
provided to the board parasitic which impacts the overall system performance.
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1
Introduction
2
EVM Default Configuration
3
Using the THS3491 EVM
4
High-Speed Amplifier PCB Layout Tips
5
EVM Hardware Description
1
THS3491RGT EVM Default Configuration Setup Block Diagram
2
Output Interface to the Measuring Instrument
3
Full Schematic of the THS3491RGT EVM
4
Top Components and Silk Screen Layer
5
Layer 2 - GND
6
Layer 3 - GND
7
Layer 4 - GND/Signal
8
Layer 5 - GND
9
Layer 6 - GND
10
Layer 7 - GND
11
Bottom Components and Silk Screen Layer
1
THS3491RGT EVM Bill of Materials
Trademarks
PowerPAD is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.
SLOU483 – August 2017
Submit Documentation Feedback
THS3491RGT Evaluation Module
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Copyright © 2017, Texas Instruments Incorporated
Contents
List of Figures
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List of Tables
User's Guide
SLOU483 – August 2017
THS3491RGT Evaluation Module
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Summary of Contents for Texas Instruments THS3491RGT EVM
- Page 1 • TI recommends initially reviewing the data sheet of the device under test. • Review the schematic and layout of the THS3491RGT EVM to determine the design techniques used in the evaluation board. • The high-speed amplifier PCB design should be approached with care and special attention must be provided to the board parasitic which impacts the overall system performance.
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Page 2: Slou483 – August
THS3491 high-speed, high-voltage, and low-distortion current feedback amplifier in a 16-pin RGT package. This document details the THS3491RGT EVM and should be a good starting point for high-speed PCB design involving the THS3491RGT device. The document includes a brief description... -
Page 3: Evm Default Configuration
Figure 1. THS3491RGT EVM Default Configuration Setup Block Diagram Standard Non-Inverting Gain Configuration The THS3491RGT EVM default configuration is a single-ended input, single-ended output non-inverting gain of 5 from SMA input (J2) to the THS3491 device output pins as shown in Figure 1. -
Page 4: Output Interface To The Measuring Instrument
Measuring Instrument 240Q THS3491RGT OUT 287Q 287Q 240Q 54.9Q 50 Q Term Figure 2. Output Interface to the Measuring Instrument THS3491RGT Evaluation Module SLOU483 – August 2017 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated... -
Page 5: Using The Ths3491 Evm
Turn on the signal generator. The measured output on the scope channel 1 at SMA connector J3 should approximately be ±250 mV (500 mV SLOU483 – August 2017 THS3491RGT Evaluation Module Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated... -
Page 6: High-Speed Amplifier Pcb Layout Tips
On boards operated from dual power supplies, it is helpful to place a capacitor directly across the positive and negative power supplies. This helps the fully differential drive. THS3491RGT Evaluation Module SLOU483 – August 2017 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated... -
Page 7: Evm Hardware Description
EVM Hardware Description This section describes the EVM hardware. It includes the EVM parts list, and PCB layout. Bill of Materials Table 1 lists the EVM bill of materials. Table 1. THS3491RGT EVM Bill of Materials Item # Designator Value Part Number... - Page 8 EVM Hardware Description www.ti.com Table 1. THS3491RGT EVM Bill of Materials (continued) Item # Designator Value Part Number Manufacturer Description Package Reference THS3491IRGT Texas Instruments High Voltage, Low Distortion, Current-Feedback RGT0016A Amplifier, RGT0016A 100pF C0603C101J5GACTU Kemet CAP, CERM, 100 pF, 50 V, ±5%, C0G/NP0, 0603...
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Page 9: Full Schematic Of The Ths3491Rgt Evm
EVM Hardware Description www.ti.com Schematic Figure 3 illustrates the EVM schematic. Figure 3. Full Schematic of the THS3491RGT EVM SLOU483 – August 2017 THS3491RGT Evaluation Module Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated... -
Page 10: Top Components And Silk Screen Layer
Figure 4 through Figure 11 illustrate the EVM PCB layout. Figure 4. Top Components and Silk Screen Layer Figure 5. Layer 2 - GND THS3491RGT Evaluation Module SLOU483 – August 2017 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated... -
Page 11: Layer 4 - Gnd/Signal
EVM Hardware Description www.ti.com Figure 6. Layer 3 - GND Figure 7. Layer 4 - GND/Signal SLOU483 – August 2017 THS3491RGT Evaluation Module Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated... - Page 12 EVM Hardware Description www.ti.com Figure 8. Layer 5 - GND Figure 9. Layer 6 - GND THS3491RGT Evaluation Module SLOU483 – August 2017 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated...
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Page 13: Bottom Components And Silk Screen Layer
EVM Hardware Description www.ti.com Figure 10. Layer 7 - GND Figure 11. Bottom Components and Silk Screen Layer SLOU483 – August 2017 THS3491RGT Evaluation Module Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated... - Page 14 STANDARD TERMS FOR EVALUATION MODULES Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, and/or documentation which may be provided together or separately (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms set forth herein.
- Page 15 FCC Interference Statement for Class B EVM devices NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
- Page 16 【無線電波を送信する製品の開発キットをお使いになる際の注意事項】 開発キットの中には技術基準適合証明を受けて いないものがあります。 技術適合証明を受けていないもののご使用に際しては、電波法遵守のため、以下のいずれかの 措置を取っていただく必要がありますのでご注意ください。 1. 電波法施行規則第6条第1項第1号に基づく平成18年3月28日総務省告示第173号で定められた電波暗室等の試験設備でご使用 いただく。 2. 実験局の免許を取得後ご使用いただく。 3. 技術基準適合証明を取得後ご使用いただく。 なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転できないものとします。 上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。 日本テキサス・イ ンスツルメンツ株式会社 東京都新宿区西新宿６丁目２４番１号 西新宿三井ビル 3.3.3 Notice for EVMs for Power Line Communication: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page 電力線搬送波通信についての開発キットをお使いになる際の注意事項については、次のところをご覧ください。http:/ /www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page 3.4 European Union 3.4.1 For EVMs subject to EU Directive 2014/30/EU (Electromagnetic Compatibility Directive): This is a class A product intended for use in environments other than domestic environments that are connected to a low-voltage power-supply network that supplies buildings used for domestic purposes.
- Page 17 Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief in any United States or foreign court. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2017, Texas Instruments Incorporated...
- Page 18 IMPORTANT NOTICE FOR TI DESIGN INFORMATION AND RESOURCES Texas Instruments Incorporated (‘TI”) technical, application or other design advice, services or information, including, but not limited to, reference designs and materials relating to evaluation modules, (collectively, “TI Resources”) are intended to assist designers who are developing applications that incorporate TI products;...
- Page 19 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments THS3491RGTEVM...
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