OpAmp Links

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Many of these circuits come in several different variations, many of which are lumped together here. Some circuits are explained, other just have schematics ( sometimes without even component values ). There are many op amp circuits not included here. Even in the referenced document not all circuits are indexed. These are not projects, but rather building blocks useful in project work. Many of these links are PDF files, this should be noted at the beginning of the link description. Many of the links contain multiple topics ( often under slightly different titles ) you may need to search through the references a bit. There are also many different types of op amps, transconductance, video .... Most of these links are for general purpose op amps. Also note the links at Op amp


Key Words int the Topic Column:

  • OpAmp = well the whole page is op amps so maybe we will delete this sometime later
  • Circuit = topic is a specific circuit
  • Project = if more of a project than just a circuit, distinction can be vague.
  • Tutorial = a discussion of the theory ( of more than just one circuit, or of one circuit in depth ).

Should we add more keywords? -- just put them here

  • oscillator = make it wiggle
  • amplifier = make it bigger

"Amplifiers oscillate. Oscillators don't." - unknown


Topic Comment Links


  • OpAmp
  • Circuit

simple op-amp summer design

  • OpAmp
  • Circuit

Amplifier: Summing ( Summer Adder )

  • OpAmp
  • Circuit

op amp circuit collections; includes a section on "signal generation" circuits including "Sine Wave Generator with Quadrature Output" circuits.

  • OpAmp
  • Circuit

Ammeter

  • OpAmp
  • Circuit

Amplifier: Audio ( various, tone control, headphone.... )

  • OpAmp
  • Circuit

Amplifier: Bridge

  • OpAmp
  • Circuit

Amplifier: Computational, Logorathimic, expotential, multiplier.....

  • OpAmp
  • Circuit

Amplifier: Differential or Difference amplifier

  • OpAmp
  • Circuit

Amplifier: High Current ( Current Boost, Servo Motor )

  • OpAmp
  • Circuit

Amplifier: High Voltage ( Voltage Boost )

  • OpAmp
  • Circuit

Amplifier: Instrumentation

  • OpAmp
  • Circuit

Amplifier: Isolation

  • OpAmp
  • Circuit

Amplifier: Level Shift

  • OpAmp
  • Circuit

Amplifier: Non-Inverting

  • OpAmp
  • Circuit

Amplifier: Photodiode

  • OpAmp
  • Circuit

Clamp

  • OpAmp
  • Circuit

Constant Current ( Current Soruce, Current Pump )

  • OpAmp
  • Circuit

Comparator

  • OpAmp
  • Circuit

Current Sense ( Monitor )

  • OpAmp
  • Circuit

Differentiator

  • OpAmp
  • Circuit

Diode or Rectifier

  • OpAmp
  • Circuit

Filter Notch

  • OpAmp
  • Circuit

Filter Tuned, Band Pass

  • OpAmp
  • Circuit

Filter High Pass

  • OpAmp
  • Circuit

Filter Low Pass

  • OpAmp
  • Circuit

Measurement Resistance

  • OpAmp
  • Circuit

Oscillator Sine Wave - Bubba Oscillator

  • OpAmp
  • Circuit

Oscillator Sine Wave - Quadrature

  • OpAmp
  • Circuit

Oscillator Sine Wave - Quadrature

  • OpAmp
  • Circuit

Oscillator Multivibrator ( more or less a simplified version of the function generator )

  • OpAmp
  • Circuit

Oscillator Sine Wave - Phase-Shift Oscillator

  • OpAmp
  • Circuit

Oscillator Sine Wave - Wein Bridge Oscillator

  • OpAmp
  • Circuit

Oscillator Triangle and/or Square Wave and/or Sine wave – Function Generator

  • OpAmp
  • Circuit

Precision rectifier

  • OpAmp
  • Circuit

Sample and Hold

  • OpAmp
  • Circuit

Schmitt trigger

  • OpAmp
  • Circuit

Temperature Sense Therometer

  • OpAmp
  • Circuit

Voltage Reference

  • OpAmp
  • Circuit

Voltage Regulator

  • OpAmp
  • Circuit
  • Tutorial

General theory and circuits for op amps

  • OpAmp
  • Circuit
  • Theory

Theory, circuits, and internal design.

  • OpAmp
  • Circuit
  • Therory

Lots and lots of links, many to PDF. Looks good, would be nice to index individuallly.

  • OpAmp
  • Circuit
  • Therory

Cool animated lecture on op amps and op amp circuits.

  • OpAmp
  • Project
  • Tutorial
  • How to measure distortion
  • List of amplifiers with low distortion.
  • by Robert A. Pease 2008.

Should we make an updated "List of Amplifiers with Low and Lower Distortion" here -- or on some other wiki -- with an updated list of easily-available low-distortion amplifiers?

PDF: Application Note 1671: "Gain and Linearity Testing for Precision Operational Amplifiers" by Robert A. Pease 2008.

  • OpAmp
  • Circuit

Interesting material some on old style vacuum tube op amps.

  • OpAmp
  • Project
  • Circuit

"a general purpose audio oscillator" variable-frequency sine-cosine generator

  • OpAmp
  • Circuit

ultrapure sine-wave oscillator

A photo of what is apparently the actual hardware discussed in that article at "Audio Precision to the rescue, of Jim Williams no less" and apparently used during production of Jim Williams: LT AN120: "1ppm Settling Time Measurement for a Monolithic 18-Bit DAC: When Does the Last Angel Stop Dancing on a Speeding Pinhead?" Apparently this is the sequel to Robert A. Pease: NS AN1671: "Gain and Linearity Testing for Precision Operational Amplifiers"


Many current sense techniques also use op-amps.


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