Datasheet Texas Instruments OPA681U/2K5

SpeedPlus(TM) Wideband, Current Feedback Operational Amplifier with Disable 8-SOIC

Datasheets

Lifecycle Status	Obsolete (Manufacturer has discontinued the production of the device)
Manufacture's Sample Availability	No

RoHS	Not Compliant
Pb Free	No

Evaluation Modules & Boards: DEM-OPA68XP
DEM-OPA68xP: Demonstration Fixture
Lifecycle Status: Active (Recommended for new designs)

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The Current-Feedback Op Amp: A High-Speed Building Block
PDF, 117 Kb, File published: Oct 2, 2000
Although current-feedback amplifiers (CFAs) have been in use for quite some time, there is a reluctance to view them in the same light as voltage-feedback amplifiers (VFAs). For instance, the gain-bandwidth curve of VFAs has a parallel in a transimpedance-bandwidth curve for CFAs. This parameter can be used to determine the closed-loop behavior of the CFA in same way that GBW can for the VFA. Not
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Noise Analysis for High Speed Op Amps (Rev. A)
PDF, 256 Kb, Revision: A, File published: Jan 17, 2005
As system bandwidths have increased an accurate estimate of the noise contribution for each element in the signal channel has become increasingly important. Many designers are not however particularly comfortable with the calculations required to predict the total noise for an op amp or in the conversions between the different descriptions of noise. Considerable inconsistency between manufactu

Series: OPA681 (5)

Semiconductors > Amplifiers > Operational Amplifiers (Op Amps) > High-Speed Op Amps (>=50MHz)