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Large-signal specifications for high-voltage line drivers

Posted: 04 Aug 2011 ?? ?Print Version ?Bookmark and Share

Keywords:Output voltage swing? slew rate? ac parameters?

Output voltage swing, output current, and slew rate interact with many other specifications in operational amplifiers. This application note develops the definitions for each parameter and the relationship between important ac parameters such as large-signal bandwidth and distortion.

In applications where a high voltage swing output is required, the output signal conditioning stage (or stages) typically requires gain. The signal may originate from a 3.3-V or 5-V digital-to-analog converter (DAC) with a 1-VPP output voltage range, while the required signal is a single-ended 10 VPP or higher. Depending on the bandwidth and slew rate requirements, the gain and output swing requirements generally determine the use of either a current feedback (CFB) amplifier or a voltage feedback (VFB) amplifier.

View the PDF document for more information.

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