This reference 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 achieved by using two or more THS3491 amplifiers in load sharing configuration to optimize large-signal bandwidth and distortion performance. THS3491 enables high-capacitive load applications because of the 900-MHz BW and ±420 mA of linear output-current drive capability. The design utilizes the VQFN-16 (RGT) package due to the best large signal bandwidth, low distortion and optimal thermal performance.
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
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Reference design overview and verified performance test data
Detailed schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
Detailed overview of design layout for component placement
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Design file that contains information on physical board layer of design PCB
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | 100-MHz, 1 A Output Current Driver Reference Design | Nov. 02, 2018 |
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