Model inverting and noninverting amplifier stages in one place. Track polarity, gain, and limited output. Use practical inputs for accurate cascade analysis every time.
| Input Voltage | Stage 1 | Stage 2 | Stage 3 | Theoretical Total Gain | Ideal Output |
|---|---|---|---|---|---|
| 0.02 V | Non inverting, Rin 1000 Ω, Rf 9000 Ω, Gain 10 | Inverting, Rin 2000 Ω, Rf 10000 Ω, Gain -5 | Non inverting, Rin 1000 Ω, Rf 4000 Ω, Gain 5 | -250 | -5.00 V |
| 0.01 V | Inverting, Rin 1000 Ω, Rf 5000 Ω, Gain -5 | Inverting, Rin 1000 Ω, Rf 3000 Ω, Gain -3 | Non inverting, Rin 1000 Ω, Rf 1000 Ω, Gain 2 | 30 | 0.30 V |
| 0.50 V | Non inverting, Rin 1000 Ω, Rf 9000 Ω, Gain 10 | Non inverting, Rin 1000 Ω, Rf 4000 Ω, Gain 5 | Not used | 50 | 25.00 V before rail limiting |
Inverting stage gain: Av = -Rf / Rin
Non inverting stage gain: Av = 1 + (Rf / Rg)
Total series gain: Atotal = A1 × A2 × A3 ...
Ideal final output: Vout = Vin × Atotal
Rail limited stage output: Vstage limited = min(max(Vstage, V-rail), V+rail)
This calculator also tracks stage saturation. It applies rail limits after each stage. That gives a practical cascade result. It is useful for multi stage feedback design.
Series connected operational amplifiers are common in signal chains. One stage may amplify a weak sensor signal. Another stage may filter or invert it. A final stage may scale the output for a converter. Total response depends on every stage. A small ratio change can create a large overall shift. This is why stage by stage gain checking is important.
This calculator models up to three operational amplifier stages in series. Each stage can be inverting or non inverting. The tool uses resistor ratios to compute closed loop gain. It multiplies stage gains to get the theoretical total gain. It also pushes the signal through every stage. That reveals the ideal output at each step. The method is simple, fast, and practical.
Ideal gain alone can mislead designers. Real amplifier outputs cannot exceed the supply rails. A large input or high gain stage may clip early. When one stage saturates, later stages no longer receive the ideal signal. The final output can differ sharply from the theoretical value. This calculator shows both ideal and limited outputs. That helps you spot saturation before building the circuit.
Operational amplifiers support measurement systems, control circuits, data acquisition, and analog conditioning. In physics labs, cascaded amplifiers are used with sensors, bridge networks, and transducers. Stable gain improves resolution and repeatability. Correct polarity also matters. Two inverting stages restore signal direction. One inverting stage flips it. Mixed chains need careful review. This tool shows the total response type at once.
Use the calculator during planning, testing, or troubleshooting. Compare resistor choices quickly. Check whether a gain target is realistic under the chosen rails. Review stage wise outputs before selecting real parts. The export options also help with reports and design notes. With clear results and short steps, the tool supports fast multi stage amplifier analysis.
It means several amplifier stages are cascaded. The output of one stage feeds the next stage. Total gain becomes the product of the individual stage gains.
Different stages may perform different functions. Inverting stages reverse polarity. Non inverting stages preserve polarity. Real signal chains often combine both types.
Supply rails define the maximum and minimum output swing. If a stage output tries to exceed those rails, the stage clips. That changes the cascade result.
Ideal output ignores saturation. Limited output respects the positive and negative rails after each stage. The limited value is closer to practical behavior.
Yes. The stage equations still run. However, actual overall gain from output divided by input becomes zero here because division by zero is avoided safely.
Closed loop amplifier design mainly depends on the feedback network. Resistor ratios set the intended stage gain in standard inverting and non inverting configurations.
Yes. Choose the stage count from the dropdown. The calculator will ignore the unused stages and compute only the active cascade path.
Export when you need design records, lab notes, or quick sharing. CSV is useful for spreadsheets. PDF is useful for reports and print ready summaries.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.