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  2. Operational amplifier - Wikipedia

    en.wikipedia.org/wiki/Operational_amplifier

    This op amp was based on a descendant of Loebe Julie's 1947 design and, along with its successors, would start the widespread use of op amps in industry. GAP/R model P45: a solid-state, discrete op amp (1961). 1961: A discrete IC op amp. With the birth of the transistor in 1947, and the silicon transistor in 1954, the concept of ICs became a ...

  3. List of LM-series integrated circuits - Wikipedia

    en.wikipedia.org/wiki/List_of_LM-series...

    Dual op-amps with fixed 2.5 V reference [20] LM611 Op-amp with an adjustable voltage reference [21] LM614 Quadruple op-amps with an adjustable voltage reference [22] LM675 Power op-amp with a maximal current output of 3 amperes [23] LM709 Yes General-purpose op-amp [24] LM741 LM709 General-purpose op-amp. [25] Widely used. LM747: Yes General ...

  4. Operational amplifier applications - Wikipedia

    en.wikipedia.org/wiki/Operational_amplifier...

    where Z dif is the op-amp's input impedance to differential signals, and A OL is the open-loop voltage gain of the op-amp (which varies with frequency), and B is the feedback factor (the fraction of the output signal that returns to the input). [3] [4] In the case of the ideal op-amp, with A OL infinite and Z dif infinite, the input impedance ...

  5. Current-feedback operational amplifier - Wikipedia

    en.wikipedia.org/wiki/Current-feedback...

    The current-feedback operational amplifier (CFOA or CFA) is a type of electronic amplifier whose inverting input is sensitive to current, rather than to voltage as in a conventional voltage-feedback operational amplifier (VFA). The CFA was invented by David Nelson at Comlinear Corporation, and first sold in 1982 as a hybrid amplifier, the CLC103.

  6. George A. Philbrick - Wikipedia

    en.wikipedia.org/wiki/George_A._Philbrick

    George A. Philbrick was responsible, through his company George A. Philbrick Researches (GAP/R), [1] for the 1953 commercialization and wide adoption of operational amplifiers, a now-ubiquitous component of analog electronic systems, and the invention and commercialization of electronic analog computers based on the operational amplifier principle.

  7. Op amp integrator - Wikipedia

    en.wikipedia.org/wiki/Op_amp_integrator

    The operational amplifier integrator is an electronic integration circuit. Based on the operational amplifier (op-amp), it performs the mathematical operation of integration with respect to time; that is, its output voltage is proportional to the input voltage integrated over time.

  8. Operational transconductance amplifier - Wikipedia

    en.wikipedia.org/wiki/Operational_trans...

    The operational transconductance amplifier (OTA) is an amplifier that outputs a current proportional to its input voltage. Thus, it is a voltage controlled current source . Three types of OTAs are single-input single-output, differential-input single-output, and differential-input differential-output (a.k.a. fully differential), [ 1 ] however ...

  9. Transimpedance amplifier - Wikipedia

    en.wikipedia.org/wiki/Transimpedance_amplifier

    In electronics, a transimpedance amplifier (TIA) is a current to voltage converter, almost exclusively implemented with one or more operational amplifiers. The TIA can be used to amplify [ 1 ] the current output of Geiger–Müller tubes , photo multiplier tubes, accelerometers , photo detectors and other types of sensors to a usable voltage.

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