An application note (http://cds.linear.com/docs/en/application-note/an124f.pdf) from Jim Williams and the related video (https://www.youtube.com/watch?v=Ta1ZuZTHYXA) may be informative.
Edésio On Thu, Aug 07, 2014 at 01:41:32PM -0700, Chris Albertson wrote: > Just practical question.. > > How would one measure noise at this level? If I were evaluate this what > would I need? My scope lacks a nV/dev setting so is there some way to tell > the difference between this and an LM317? Seriously, what kind of > instrumentation would I need before I could measure an improvement over my > "standard" LM317 > > > > On Wed, Aug 6, 2014 at 11:38 PM, Ole Petter Ronningen <olep...@gmail.com> > wrote: > > > Hello, all > > > > I thought it may be of interest to some of the members of this list that TI > > is selling evaluation modules for some ultra low noise regulators for $20 > > in their estore, shipping world wide included. The specs looks pretty > > decent to me, and I've ordered up a couple of boards to use as "clean up > > boxes" for my bench-supplies, to use on noise-sensitive projects. > > > > 1.4-30v output TPS7A4701EVM-094 > > 3.5µVRMS (10Hz, 100KHz) > > <25 nV/???Hz (10Hz, 1MHz) > > Maximum Output Current of 1A > > > > +-15v version TPS7A30-49EVM-567: > > 15v rail: > > Noise: > > 12.7µVRMS (20Hz to 20kHz) > > 15.4µVRMS (10Hz to 100kHz) > > Power-Supply Ripple Rejection: > > 72dB (120Hz) > > ??? 52dB (10Hz to 400kHz) > > Maximum Output Current: 150mA > > > > > > -15v rail: > > Noise: > > 14µVRMS (20Hz to 20kHz) > > 15.1µVRMS (10Hz to 100kHz) > > Power-Supply Ripple Rejection: > > 72dB (120Hz) > > ??? 55dB (10Hz to 700kHz) > > Maximum Output Current: 200mA > > > > Ole > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > > > -- > > Chris Albertson > Redondo Beach, California > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
