chickenHeadKnobSorry to hear, but whole life is a continuous learning process. You welcome to skip on, if it disturbs too much.
Dr. FrankI'm still processing all data and calculating uncertainties. I'll post more on this once have data refined.
All my available LTZ modules were tested too, including 4 chips in socket board I shown before, as well all fancy resistors I have.
I have good confidence now that I'm within 1ppm abs on DCV, and around 3ppm on resistance.
It's in between of your assumptions for modules.
These are little ultralow noise LDOs based on
LT3042, which have lowest noise I'm aware of LDO, specified to 0.8?VRMS (10Hz to 100kHz). They are available only in MSOP and DFN packages, so not quiet easy to prototype for our usual analog tinkering. Hence to "adapter" to TO220. Setting of output voltage is done via single resistor, with range up to 15VDC. Output current is 200mA.
Bigger "TO247" one is same thing, but with NPN pass transistor to raise max output current to 1A. It's based on schematics on
page 26 of LT's datasheet.
As for reward, Dr.Frank can have two assembled units of both type, if he desire and send me his shipping information via PM, for his enjoyment