Frequency Domain Simulation dBV Specifics

The response curve generated by the Frequency Domain Simulation plots dBV against frequency, where 0dBV = 1V. Is that 1V an RMS, Peak, or Peak-to-Peak value?

I design op-amp circuits here and always set the signal generator model to 1V @ 1kHz for the input signal and know that this 1V is a Peak value. However, the voltage level corresponding to a dBV value is usually an RMS value, according to information I found online. But I could not find that particular specification on the curve generated by the Frequency Domain Simulation at this, the CircuitLab website. Could you tell me what that spec is? Thanks.

by Kurtus
October 23, 2025

I am currently assuming that a voltage level corresponding to any dBV value is an RMS value. The normal assumption. But I would like to know for sure that this is true for the response curve given by the Frequency Domain Simulation. A specific answer would be very helpful.

by Kurtus
October 24, 2025

I believe I can answer my own question, but would like to follow up with another one. First, I like the online calculator linked here.

https://calculator.academy/db-to-voltage-calculator/

For any dB (volts) I enter, it gives corresponding dBV, dBu, dBuV, V, mV, uV, V Peak (sine), V P-P (sine), V/Vo, and P/Po.

The text at that site, while giving the formulas used by their calculator, specifies that this V is an RMS value.

My question now is: Can I depend on this calculator to interpret the dBV values on the response curve for my op-amp circuits, as generated by the Frequency Domain Simulation?

by Kurtus
October 26, 2025

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