> For the third time: I just want VERY LOW noise, you are not quoting (this > is not quite the concept I have for "correct relashionship") the rest of > my answer. Doesn't matter anyway: people who really wanted to help, > understood the matter and gave good directions. While Olin was his rather "abrasive" self, he was technically right. You WERE asking for NO noise in the 50kHz band. That is impossible. EVERY circuit has noise at every frequency, it is impossible to have NO noise. You are now saying "very low" noise, that still isn't very helpful since what you think is "very low" may differ from what I think "very low" means. But, at least "very low" isn't impossible, which is what your prior specification was. TTYL ---------------------------------- Herbert's PIC Stuff: http://repatch.dyndns.org:8383/pic_stuff/ -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads