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Design >> Analog Design >> how the low frequency noise generated?
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Message started by lhlbluesky_lhl on Dec 13^th, 2012, 5:20am

Title: how the low frequency noise generated?
Post by lhlbluesky_lhl on Dec 13^th, 2012, 5:20am

when testing my power ic, i have found a low frequency noise at clock output (noise at 1hz or lower), but there is no circuit module working at so low frequency. and can it be flicker noise (opamp or comparator)?
thanks.

Title: Re: how the low frequency noise generated?
Post by raja.cedt on Dec 13^th, 2012, 7:24am

what is your circuit, i guess main source for this component is inter-modulation. If it is because of flicker noise, you should see low band spectrum rather a spur at 1HZ. Describe more abut the problem.

Thanks,
Raj.