shiks Posted February 8, 2006 Report Share Posted February 8, 2006 Does anybody have any idea what these ICs are?....SY89424V, SY89429V, SY89420V, SY87701L..They are the oscillators but do they incorporate MODFET or other high speed devices?Shiks Quote Link to comment Share on other sites More sharing options...
audioguru Posted February 8, 2006 Report Share Posted February 8, 2006 Just look at the datasheets to see what they are and how to use them.1Ghz is a very high frequency so sure they use very high speed devices. They don't say which types of devices they use, does it matter?I copied part of the datasheet for the 1st one and you can see the others yourself at www.datasheetarchive.com . Quote Link to comment Share on other sites More sharing options...
shiks Posted February 16, 2006 Author Report Share Posted February 16, 2006 Thanks Audioguru..I have found the actual HBTs in use in the VCOs.Si-Ge and InGa HBTs are there..Those who wish to see can have a look at the following links..They will be helpful.Rather too many companies from Japan and Canada are into the business !www.semicon.toshiba.co.jp/ eng/prd/pdf_presen/hfreq_VCO_200502_e.pdf -www.eepn.com/Locator/Products/ ArticleID/30886/30886.html Good Luck ! Quote Link to comment Share on other sites More sharing options...
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