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liletian
Joined: 06 Mar 2008
Posts: 113
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 02 Oct 2008 16:57 can anyone give some help on noise? |
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Hi Guys
Can someone give me some help on noise in LDO? It will be greatly appreciated if you can give me some papers on LDO which discuss LDO noise in details. Also,is there any paper about resistor ladder noise discussion will be greatly appreciated too.
Thanks a lot
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jecyhale
Joined: 19 Feb 2008
Posts: 442
Helped: 46
Location: China
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| 03 Oct 2008 4:04 Re: can anyone give some help on noise? |
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Usually, noise is not the key performance of LDO.
Why you care it?
Do you design LDO for high frequency LNA or VCO?
Sometime, if you want to optimize the noise of LDO, you should simulation LNA or other circuit with LDO.
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liletian
Joined: 06 Mar 2008
Posts: 113
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| 03 Oct 2008 4:43 Re: can anyone give some help on noise? |
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| jecyhale wrote: |
Usually, noise is not the key performance of LDO.
Why you care it?
Do you design LDO for high frequency LNA or VCO?
Yes, I did! That's why I put a big concern on it!
Sometime, if you want to optimize the noise of LDO, you should simulation LNA or other circuit with LDO. |
Can you give more details on how to co-simulate it? What I did is when I run transient simulation of LDO and LNA together, and specify the noise band is 1MHZ and LNA is running at 2GHz and see the transient simulation results.
Is it the right way?
Thanks for your help
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