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LT1001 Precision Absolute Value Circuit

Precision Absolute Value Circuit

An absolute value circuit as as a full wave rectifier. Positive input voltqges cause the first amplifier to act as a unity gain inverter. The second amplifier inverts thiis output again to produce a positive outut voltage. Negative input voltages cause the + input of the second amplifier to move positive to a voltage of 2/3Vin. This is multiplied by a gain of 3/2 by the second amplifier also producing a positive output voltage equal to the input voltage.

 


Software

LTspice

LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

To launch a ready to run LTspice demonstration circuit for this part:

  • Step 1: If you have not installed LTspice on this computer, download and install LTspice
  • Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
  • Step 3: If LTspice does not automatically open after clicking the link above, you can instead run the simulation by right clicking on the link and selecting "Save Target As." After saving the file to your computer, start LTspice and open the demonstration circuit by selecting 'Open' from the 'File' menu

To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.

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