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How to get rid of noise of LDO?

 
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liletian



Joined: 06 Mar 2008
Posts: 113


Post26 Sep 2008 21:00   How to get rid of noise of LDO?

I design a LDO myself, but the output noise is pretty high, about 100mV, How to get rid of noise of LDO?
Thanks
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renwl



Joined: 26 Apr 2004
Posts: 455
Helped: 23
Location: shanghai,china


Post27 Sep 2008 9:17   How to get rid of noise of LDO?

you should improve the PSRR.
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tanuki



Joined: 11 Jun 2001
Posts: 90
Helped: 3
Location: Spain


Post27 Sep 2008 14:10   Re: How to get rid of noise of LDO?

You need to supply a pic of your circuit and test data.

There are many reasons for noise and/or oscillation.

also search: LDO design issues
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fmgay



Joined: 19 Jun 2008
Posts: 7


Post05 Oct 2008 16:04   How to get rid of noise of LDO?

Please atteach your arch of LDO.
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Sadegh.j



Joined: 29 Nov 2006
Posts: 702
Helped: 32


Post05 Oct 2008 21:44   Re: How to get rid of noise of LDO?

Use differential circuits. It might help
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