This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
900-MHz, High Power Output, Current Feedback Amplifier


Models (4)

Title Category Type Date
THS3491RGT TINA-TI Spice Model TINA-TI Spice Model ZIP 15 May 2018
THS3491RGT TINA-TI Reference Design TINA-TI Reference Design TSC 15 May 2018
THS3491DDA TINA-TI Reference Design (Rev. A) TINA-TI Reference Design TSC 27 Mar 2018
THS3491DDA TINA-TI Spice Model (Rev. A) TINA-TI Spice Model ZIP 27 Mar 2018

Design kits & evaluation modules (2)

Name Part# Type
THS3491DDA Evaluaton Module THS3491DDAEVM Evaluation Modules & Boards
THS3491RGT Evaluation Module THS3491RGTEVM Evaluation Modules & Boards

Reference designs

100-MHz, 1 A Output current driver reference design for high capacitive load applications

This TI Design uses the THS3491 high-speed, high-voltage current feedback amplifier to demonstrate an output current drive capability of greater than 1 A into a low resistive or high capacitive load while maintaining a large signal bandwidth of 100 MHz at 20 VPP. The high output current drive is (...)

View the Important Notice for reference designs covering authorized use, intellectual property matters and disclaimers.

Development tools (3)

Name Part# Type
Analog engineer's calculator ANALOG-ENGINEER-CALC Calculation Tools
Voltage Divider Determines A Set of Resistors for a Voltage Divider VOLT-DIVIDER-CALC Calculation Tools
SPICE-based analog simulation program TINA-TI Circuit Design & Simulation

CAD/CAE symbols

Part# Package | Pins CAD File (.bxl) STEP Model (.stp)
THS3491 Download

Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.

Please follow the instructions below to view the CAD symbols:

Step 1: Download and install the Ultra Librarian software

Step 2: Download the Symbol and Footprint from the CAD.bxl file table.

Step 3: Open the .bxl file with the Ultra Librarian software.

You can always access the complete CAD/CAE Symbols database at //

Both PCB footprints and schematic symbols are available for download in a vendor neutral format, which can then be exported to the leading EDA CAD/CAE design tools using the Ultra Librarian Reader. The reader is available as a free download.

The UL Reader is a subset of the Ultra Librarian toolset that can generate, import, and export components and their attributes in virtually any EDA CAD/CAE format.