Operational Amplifiers

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Analog

What’s All This LM10 Stuff, Anyhow?

Paul Rako recounts Bob Pease's back-and-forth with the author of a linear-regulator design idea on how the LM10 op amp might better serve his circuit than the proposed LM741...
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Components

Retro ICs that Will Never Die

From the 555 timer to the LM317 regulator, many old-time components still can be had from suppliers to help engineers, hobbyists, or even college students complete their projects...
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Analog

What’s All This Varactor-Input Amplifier Stuff, Anyway?

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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Analog

Op Amps Make Precision Clipper, Protect ADC

A simple op amp clipping circuit can limit input-voltage excursions into an ADC, thus preventing input overload and possible damage to the converter.
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Test & Measurement

These Current-Monitoring Methods Help Shrink TCO, Boost Uptime

Sponsored by: Texas Instruments By implementing the current-monitoring approaches described in the article, designers can diagnose faults and take remedial action in advance of...
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Power

Modeling Op-Amp Output Impedance: A New Approach

A novel impedance module can be modeled with poles and zeros.
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Operational Amplifiers

40-V Op Amp Doubles The Slew Rate

According to Analog Devices, its 40-V ADA4870 operational amplifier delivers over 1 A of output current at more than twice the slew rate (2500 V/µs) of competing high-output-power...
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Operational Amplifiers

Zero-Drift Op Amps Bring Greater Precision To Wearable Products

With an input-offset voltage of 5 µV at 25°C an 30-nV/°C temperature stability, STMicroelectronics’ TSZ121 family of zero-drift op amps will meet the front-end signal-conditioning...
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Analog

Op Amps Build Simple Multiphase Signal Generator

Test and instrumentation applications may need a series of spaced, identical low-frequency sine wave with well-defined phase differences between them. This simple circuit provides...