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    • Exploring Op Amps

    Operational amplifiers are often misunderstood but the basis for many analog designs.
    ID 339531418 © Asliyuce | Dreamstime.com
    opamp_dreamstime_l_339531418
    Feb. 10, 2025
    Despite the monolithic op amp being older than SPICE simulators, comprehensive op-amp SPICE modeling left a lot to be desired—until now.
    Andy Turudic
    June 4, 2024
    LTspice simulation of the K2-W Vacuum Tube Op Amp’s design reveals the mad science that created a commercial revolution in 1950s and 1960s analog computing.
    182656696 © Wisconsinart | Dreamstime.com
    May 27, 2024
    Design analysis of the K2-W Vacuum Tube Op Amp’s design and operation reveals the mad science that created a commercial revolution in 1950s and 1960s analog computing.
    105562587 © Golubovy | Dreamstime.com and EIM Technology
    May 24, 2024
    A book for hobbyists, engineers, Makers, and Arduino devs, "Fundamental Analog Circuits & Semiconductors,” with lab kits, successfully funded on Kickstarter.
    Dreamstime_wisconsinart_1344232661
    May 20, 2024
    In the first of three parts, Andy hypothesizes that the K2-W Analog Computer Op Amp’s design has some unrevealed mad science in its input-stage design.

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    This AEC-Q100-qualified dual op amp from STMicroelectronics merges two difficult-to-combine attributes in a MiniSO-8.
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    New high-accuracy, high-stability op amps from STMicroelectronics, targeting automotive applications, work in temps up to 175°C.
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    Download this Electronic Design PDF eBook by Analog and Signal Path Consultant, Michael Steffes.
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    From input offset voltage to slew rate to gain bandwidth product, specifications for operational amplifiers can vary widely amongst different vendors.
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    Here’s what you didn’t learn in school, such as how to really combine the distortion terms in cascaded amplifiers.
    148610608 © Igor Borisenko | Dreamstime.com
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    With its minimal current consumption and 150°C operating temp, the TSU111H op amp developed by STMicroelectronics delivers an unusual combination of properties.
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    Wouldn’t it be great to not repeat the same amplifier application errors many new designers fall into? Read on to head off these common confusions and oversights.
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    In a signal-conditioning op-amp application there are a number of different approaches to take—what noise and SFDR advantages might one offer over another.
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    How damaging is EMI to op amps in a circuit design? And what methods are used to minimize these effects? Circuit designers may be surprised at the clever ways op amps can be used...
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    Paul Rako revisits the varactor-input amplifier built by Bob Pease, creating his own updated version and running it through Spice simulations.
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    Michael Steffes challenges conventional approaches to Sallen Key Filter design. He says today's components and VFAs offer greater flexibility. This opinion piece links to more...