Feels like a single transistor circuit would do the job and would only need a single power rail. It could be the cheapest solution.
Ralph McDiarmid, AScT Xantrex Technology Inc On Tue, 14 Apr 2009 00:02:40 -0500, Ken Javor <[email protected]> wrote: > Looking for an inexpensive small audio unity gain emitter-follower type > buffer amplifier with input impedance equal to or higher than 10 K Ohms, and > output impedance of 50 Ohms. Frequency range of 20 Hz to at least 50 kHz > with less than 1 dB variation over that range. > > If there is some op-amp that can be easily configured to do this, that would > be fine. An off-the-shelf package would also work. I made my own from Maxim MAX497 video buffer amplifier. Worked fine from DC to at least 30MHz. I assembled the IC in a box with a small DC/DC converter to power +/- 5V to the IC, and used a small AC/DC power supply unit to power the box. Regards, Tom Tomonori Sato <[email protected]> URL: http://homepage3.nifty.com/tsato/ - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]> - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
