How about using a single 8-pin DIP IC that is under $2.50? The Microchip MIC4422AYN "gate driver" takes a 3.3V signal in and produces a fast rail-to-rail output swing, with a 4.5V to 18V supply range. Typical output resistance is sub 1 Ohm, so not a problem driving a series back-terminated 50 Ohm load. Note the 4422's rise and fall times are specified with a 10,000pF load, given the primarily resistive load in this case the rise and fall should be sub 10 ns (per p.5 of the data sheet). But do use beefy lo-Z traces and hefty broadband supply bypassing, the MIC4422 can pump up to 9A into its intended load.
Bob L. > Sent: Saturday, January 20, 2018 at 2:43 PM > From: "Jerry Hancock" <[email protected]> > To: "Discussion of precise time and frequency measurement" > <[email protected]> > Subject: Re: [time-nuts] minimalist sine to square > > ... > > Now that I had the input conditioned, I need to drive a 50ohm load with the > signal coming from the PICDIV. Can someone point me at a circuit using > transistors and 10V if possible? > > I am trying to duplicate one channel of the TADD2 so I can bring 10Mhz down > to 10Khz. > > Thanks > > Jerry _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
