That's a really nice part, like the old LM723 was bring your own pass element, the 3042 is essentially bring your own reference, I hope that is a trend that continues. And a 10uF capacitor is pretty quiet at 1KHz plus.
The other neat thing about the 3042 is the error amplifier is run unity gain with a compensation network. For a typical 12V ldo you loose 20 dB loopgain and 1 decade of loop bandwidth gaining up 1.2 VRef to 12 V on the feedback divider. At 12 V I'm sure the 3042 would blow a typical LDO out of the water in line/load regulation. On Wed, Dec 7, 2016 at 11:36 PM, jimlux <[email protected]> wrote: > On 12/7/16 4:20 PM, Scott Stobbe wrote: > >> Yes, the short hand I like to use is 4 nV*sqrt(R/1000). >> >> 2 nV/rthz off a bandgap is pretty darn impressive, that includes a delta >> vbe gained up ~10x. >> >> On Wed, Dec 7, 2016 at 7:03 PM Bob Camp <[email protected]> wrote: >> >> H >>> >> > the cool thing about those parts is that their PSRR extends up to several > MHz. A lot of LDOs have good PSRR to kHz. > > Someone at LT did a good job on that design. > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/m > ailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ 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.
