> Well I'm trying not to use all these passives and just ONE ADC chip to > measure noise. > Again original question remains, Any critic to this idea? You are jumping out of a nice comfortable frying pan into a raging inferno. How many passives do you think it will take to make your ADC work? What sort of sample rate and how many bits do you want? Have you looked at any data sheets or app notes? (Try TI and/or Analog Devices. Both have good web sites.) You can get ADCs in tiny packages, but those chips are only useful for measuring the (average) DC voltage rather than measuring the noise on a power rail. Other considerations: Where are you going to get the clock for it? How are you going to collect the data that comes out of it? We really are fortunate that the scope companies are making such wonderful gear. I often wonder what they use to debug/test their top of the line products. -- The suespammers.org mail server is located in California. So are all my other mailboxes. Please do not send unsolicited bulk e-mail or unsolicited commercial e-mail to my suespammers.org address or any of my other addresses. These are my opinions, not necessarily my employer's. I hate spam. ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu