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PSRR Charactarisation - Noise injection on DC Rail!

Question asked by brcm_montreal on May 7, 2014
Latest reply on Aug 6, 2015 by MattC

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Good morning,

I am currently looking for a method to inject noise patterns onto CMOS power rails and wanted to know if any Agilent Supplies offered this option. I need something that can be controlled via Linux and Windows drivers (or even better, driverless via Serial/Network/whatever) to automatically inject arbitrary noise patterns and levels on top of a clean DC rail.

Thanks for the help,
Chuck

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MattC Jun 18, 2014 3:57 PM
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Hello,

What are the required voltage and current as well as the frequency of the noise? If it is low power and low frequency then you might be able to do something. If it is higher power then you might want to try something like this blog post suggests: [http://gpete-neil.blogspot.com/2012/09/simulating-power-supply-noise.html].

Thanks.
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- danren @ MattC on Jun 5, 2015 8:29 AM
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  MattC,
  
  Sorry to revive a year-old discussion, but my information needs are similar. I looked at the Blog and I don't feel my needs are quite that challenging. The Blog post has information for coupling noise into a DC signal at frequencies above about 30 kHz. I do not require noise signals at that high of a frequency. What I require is a DC Supply capable of providing up to 28 V nominal, with noise of up to +/- 5 V, at frequencies below 30 kHz. Does Keysight Technologies offer a DC Power Supply capable of generating the voltage and noise components that I require, that is also capable of running under program control (LabVIEW)?
  
  Thank you for your help.
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  - MattC @ danren on Aug 6, 2015 11:58 AM
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    Hi Dan,
    
    Some of our power supplies do have the ability to do arbitrary waveforms, but the waveforms would be limited to something like 1 kHz. If you want something in the 25 kHz range, you will need to use the injection method or some other method to add it.
    
    Sorry.
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Dec Aug 29, 2014 5:34 AM
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Hi

MattC will probably kick me for this but have you come across the bode 100 from omicron?

http://www.omicron-lab.com/bode-100/product-description.html

We use it for PSRR on or linear regs.

Dec
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PSRR Charactarisation - Noise injection on DC Rail!

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