On Sep 30, 3:23 am, Riad KACED <riad.ka...@[EMAIL PROTECTED]
> wrote:
> Hi There,
>
> I'm happy it was usefull for you :-)
> the PSS/PNOISE will do the trick for you, did you try it ?
> I haven't got any extra do***entation for this I'm afraid. The
> Cadence's SpectreRF docs I have mentioned above are good enough
> though.
>
> Cheers,
> Riad.
Hi Riad,
I simulated the chopper amplifier with PSS/PNOISE analysis.
I can see that the 1/f noise at dc is gone. But I have high energy at
both sides of input signal frequency. But at signal frequency the
energy is less.
Energy at chopping frequency is also very less.
Is that right? I expect the large energy at the chopping frequency but
not at the sides of signal frequency.
Intention of my simulation is to find out the correct chopping
frequency which cancels the 1/f noise.
The signal frequency is 100Hz.The corner frequency of the opamp is
around 1KHz( I believe the simulation is correct!). Now I have
chopping frequency around 25Khz.
Do u have any idea, which is the best chopping frequency I can choose?
Thanks
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