[volt-nuts] The "averaging reference"

[Jan Fredriksson]

It's no coincidence that virtually all 8.5 digit DMMs use the LTZ1000.
It's in a class of it's own. REF102 is not in the same class, even if
you average a handful.

But there are a couple of nice things about the REF102, though for
more moderate requirements
- You get a reference at 10V, +/-0.0025V, trimmable (not a 5% 7V of the LTZ1000)
- Moderate power / current
- Low sensitive to supply voltage
- Very simple to implement
There was a metal can version but it's obsolete. But be aware that
the TI site still shows the metal can spec 5ppm/1000h while the
available packages are actually 20ppm/1000h!