Operational Amplifiers Guide

ALG Software Lab

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About this app

Op Amp Tool – Design & Calculate Operational Amplifier Circuits
Your Ultimate Guide to Operational Amplifier Circuits and Calculations

Whether you're a student, hobbyist, or professional electronics engineer, Op Amp Tool provides everything you need to design, calculate, and simulate analog circuits using operational amplifiers (op-amps). The app includes over 50 calculators, circuit examples, and reference guides to help you build projects, study theory, or prototype analog systems.
Use it as a portable circuit design assistant—perfect for labs, fieldwork, or classroom learning.

Features & Circuit Categories:

Amplifiers:
• Non-inverting & inverting amplifiers
• Voltage repeaters
• Differential amplifiers (with & without T-bridge)
• AC voltage amplifiers

Active Filters:
• Low-pass & high-pass filters (inverting & non-inverting)
• Bandpass filter
• Gyrator-based designs

Integrators & Differentiators:
• Single & double integrators
• Voltage differentiators
• Advanced sum and difference configurations

Comparators:
• Standard comparators
• Limiters (with/without Zener diodes)
• RS trigger circuits

Attenuators:
• Inverting and non-inverting configurations

Converters:
• Voltage-to-current converters (inverting, non-inverting, and differential)

Adders & Subtractors:
• Inverting & non-inverting adders
• Addition-subtraction circuits

Logarithmic & Exponential Amplifiers:
• Diode and transistor-based logarithmic/exponential amplifiers

Reference Section:
• Pinouts and descriptions for popular operational amplifiers and comparators

The application is available in 11 languages: English, French, German, Indonesian, Italian, Polish, Portuguese, Russian, Spanish, Turkish, and Ukrainian.

New calculators and circuit examples are added with every update to ensure the app stays relevant and useful.
Design smarter analog circuits—get started with Op Amp Tool today!

What’s new

Updated content and libraries. Fixed small bugs.