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operational amplifier |
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operational amplifier, amplifier amplifier, device that accepts a varying input signal and produces an output signal that varies in the same way as the input but has a larger amplitude. The input signal may be a current, a voltage, a mechanical motion, or any other signal; the output signal is ..... Click the link for more information. whose output voltage is proportional to the negative of its input voltage and that boosts the amplitude of an input signal many times, i.e., has a very high gain. It is usually connected so that part of the output is fed back to the input. Operational amplifiers were originally developed to be used in synthesizing mathematical operations in analog computers computer, device capable of performing a series of arithmetic or logical operations. A computer is distinguished from a calculating machine, such as an electronic calculator , by being able to store a computer program (so that it can repeat its operations and make ..... Click the link for more information. , hence their name. Because of recent advances in semiconductor technology, they have become available as integrated circuits. They are widely used when a closely controlled amount of gain or some form of signal processing is necessary in an electronic system. See op amp. |
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The latest addition to Intersil's new high speed operational amplifier portfolio, the Elantec EL5166 and EL5167 are designed to meet the high bandwidth, high slew rate requirements of today's high performance video, test and instrumentation, and other high frequency applications. d] = 15 [omega] corresponds to ten 150 [omega] resistors connected in parallel, producing smaller feedback attenuation (from the operational amplifier output to its input) in each individual current-to-voltage converter. When it came to analog ICs, Cirrus Logic's (Nasdaq:CRUS) CS3003 operational amplifier stood out amongst the competition, earning it a place in the magazine's list of Hot 100 product for 2006. |
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operational amplifier
