Posts by KT88

Done   I wanted the first post to include more than just the final schematic + specs, the design process itself is very important, and I believe it helps understand the circuit well and understand why I've arrived at this...

Yes, this is RMS noise. As I've stated it was measured with tangent's LNMP -> Agilent U1253A.   The BW of the LNMP is about 5Hz-100KHz.

Its a combination of the two.   IRFU110 + LPF has about 30uV of noise. IRFZ24N + LPF has about 12uV of noise. IRFZ24N alone has about 100uV of noise.   BTW, someone asked me to measure the noise for a 3.3V output...

Yes, its meant to be used with an off board HS. If I'll allow for on board HS it'll require a larger board which will increase the cost of the boards, so at the moment I'm using off board HS. Personally I think using the case for this...

<Edit> As wakibaki has suggested, I'll sum the main few points so it won't get lost in this long post. The goal of the post is to share a design of a simple voltage regulator I've designed, and go over a few of the steps along...

That's why I don't like cheap DMM's (even though I've had the same issue with a bench top 5.5digits Agilent).   Try measuring the DC voltage at the input of the regulator under the same conditions (same load, etc). Perhaps...

LOL, that's what happens after so many hours without sleep :D

How much current is running through the opamp?   Keep in mind that if its used for the supply of the micro (say from V+ to the virtual GND) than all the current going though the micro will go back to the opamp and from there...

Have a few more pairs once more :)

Thank you for the response. Did you ever open a pair of these or are you just relying on the fact UE can change them into customs?