learn.howToCalculate
learn.whatIsHeading
Calculates op-amp circuit gain for inverting and non-inverting configurations. Determines amplifier output voltage relationship to input.
Formel
Bandwidth = gain-bandwidth product ÷ gain
Steg-för-steg-guide
- 1Inverting: gain = -Rf ÷ Rin
- 2Non-inverting: gain = 1 + (Rf ÷ Rin)
- 3Bandwidth = gain-bandwidth product ÷ gain
- 4Input impedance affects signal source loading
Lösta exempel
Ingång
Rf=10k, Ri=1k
Resultat
Gain = -10
Vanliga misstag att undvika
- ✕Forgetting negative sign for inverting configuration
- ✕Not checking gain-bandwidth product vs. requirements
Vanliga frågor
Why use non-inverting over inverting?
Non-inverting has higher input impedance, better for source impedance matching.
What limits op-amp gain?
Gain-bandwidth product: high gain reduces bandwidth; stability requires compensation.
Redo att beräkna? Prova den kostnadsfria Op Amp Gain-kalkylatorn
Prova själv →