Quick question about operational amplifiers

[EEInProgress]

Homework Statement

Does a noninverting operational amplifier amplify the frequency of an input, ex. a 2 kHz square wave of amplitude 100mV peak-peak, or just the voltage?

 

[berkeman]

Homework Statement

Does a noninverting operational amplifier amplify the frequency of an input, ex. a 2 kHz square wave of amplitude 100mV peak-peak, or just the voltage?

Welcome to the PF.

In general, opamps are voltage amplifiers. You use negative feedback to set the overall gain of the circuit. If you use reactive components (caps and/or inductors), you can make the gain a function of frequency. That is how you make lowpass filters (LPFs), highpass filters (HPFs), bandpass filters (BPFs), etc.

Does that help?

 

[EEInProgress]

Yea, I just needed a confirmation. Been doing DC circuits in my circuit class, and then I come across questions concerning AC inputs and wasn't sure about the frequency. Thanks for the quick reply :)