You can find the data sheet at <http://www.ti.com/product/lm331>.
Their idea of precision is not in the same league as a Volt Nut or Time
Nut (Worst case values):
Non-linearity: 0.14%
Temperature Stability: 50 ppm/C
Supply Sensitivity: 0.1 %/V
Many years ago I used one of these for a project and I was disappointed
in the performance. I no longer recall the details.
Brent
On 7/29/2013 2:29 PM, Joseph Gray wrote:
I found this app note that looks interesting.
http://www.stanford.edu/class/ee122/Parts_Info/datasheets/LM331-AN-C.pdf
Joe Gray
W5JG
On Mon, Jul 29, 2013 at 1:55 PM, Joseph Gray <[email protected]> wrote:
I imagine that this has been discussed before, but I didn't see anything
in the archives. Long before my recent weakness and ordering of that
voltage standard on ebay, I had thought about using a voltage to frequency
converter.
Since it is relatively easy and inexpensive to have a very accurate
frequency standard at home, I wondered how difficult would it be to use
that standard to create an accurate voltage standard.
Some Googling didn't turn up much along these lines. Since this method
apparently isn't being used, there must be some reason. Can anyone
enlighten me?
Joe Gray
W5JG
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