Re: AC Analysis - show Mag in dBuV versus Freuqncy
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Le 14/04/2025 ¨¤ 01:02, Zivko Petru via groups.io a ¨¦crit?:
In LT spice AC analysis You are instructed to use 1Vac as input.
Actually, 1Vac is meaningless. Could be 1V rms, 1V peak or 1V peak-to-peak. The dB value is always referred to the input voltage, whatever the unit.
In order to have the results expressed in dBuV, the amplitude must be 1u.
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dbu on the other hand is referenced to 1 uV.
dBu is an audio measurement reference, corresponding to an rms value of 0.775V
dB referred to 1uV is dBuV
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