Hi all,
I'm trying to design a high-gain inverting amplifier with a T-network of resistors (see first attachment)
When I built this circuit and tested it separately with a signal generator (5 kHz sinusoid, 2.5V DC offset) it output a massively clipped sinusoid (pretty much a square wave). So i assumed it works as expected. However, when I placed it after the non-inverting amplifier I built before it which works perfectly fine, (2nd attachment) it didn't amplify the input signal at all. In fact it appeared like it attenuated the signal.
The only difference between the signal I used for testing and the one that's used for the design is that the design signal has a bit of noise added to it that will eventually be filtered. Is there something I have to include in this design to make sure it can amplify the signal succesfully? Or is there a connection issue that I haven't taken into consideration? Please help!
Thanks!
I'm trying to design a high-gain inverting amplifier with a T-network of resistors (see first attachment)
When I built this circuit and tested it separately with a signal generator (5 kHz sinusoid, 2.5V DC offset) it output a massively clipped sinusoid (pretty much a square wave). So i assumed it works as expected. However, when I placed it after the non-inverting amplifier I built before it which works perfectly fine, (2nd attachment) it didn't amplify the input signal at all. In fact it appeared like it attenuated the signal.
The only difference between the signal I used for testing and the one that's used for the design is that the design signal has a bit of noise added to it that will eventually be filtered. Is there something I have to include in this design to make sure it can amplify the signal succesfully? Or is there a connection issue that I haven't taken into consideration? Please help!
Thanks!