Hi Randy; I would look at Visha Foil resistors http://www.vishaypg.com/docs/63120/hzseries.pdf Hope that helps. Cheers; Thomas Knox
> Date: Wed, 16 Jul 2014 17:44:10 -0700 > From: randyevans2...@gmail.com > To: volt-nuts@febo.com > Subject: [volt-nuts] Matched resistors > > I am building a 10V voltage reference based on the LTZ1000 and the design > is essentially done but I am looking for a pair of matched resistors that > track very closely over temperature. The absolute value of the pair is not > important, anything between 50K and 200K ohms would be ideal, but the > matching ratio is very important. > > I looked at the 100K ohm LT5400 quad resistor array from Linear Technology > but it has a worst case long term accelerated shelf life spec of 10 ppm (at > 150C) matching ratio and long term matching ratio drift of <4ppm (at 70C). > I would like something much tighter if possible since that would mean I > likely don't need an oven for a couple of ppm worst case accuracy over time > and temperature. I can make the LT5400 work but I would need to do > temperature characterization and circuit compensation. Doable but > undesirable. > > Does anyone have any ideas for a good ratio matched resistor pair, > hopefully not too expensive? > > Thanks, > > Randy Evans > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there. _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
