[volt-nuts] Voltage to frequency

[Brent Gordon]

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 <jgray at zianet.com> 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
>>
>>