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Problem with inverter (possibly slew rate/noise)

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johnchau123

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I am using a simple op-amp to make an inverter. I set Rin = Rout.

However, when I implement it and feed a 1 MHz sine wave into the input, the output was unexpected. It seems to have distorted plus something I don't know. I don't know why.

When I use JK-Flip flip to serve as a frequency divider and I feed in a 1 MHz square wave, same problem arises.

I would like to know why and how can I solve the above problems.

Thanks. :)
 

Re: Inverter

from what u say i think u r dealing with noise and slew rate problem..... noise is hard to reject because it is omnipresent.... The slew rate problem is where the input changes faster than what the op-amp can support..... so try changing the op-amp....
 

Re: Inverter

if you feed with a sinusoidal wave try with an open-loop opamp (zero-cross detector). Or maybe with a schmitt-trigger inverter.
 

Re: Inverter

u r giving 1 MHZ signalto an opamp n i thimk its slew rate is less thats why it cant handle that signal so i also suggest use of high slew rate opamp
 

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