[volt-nuts] LM399 Long term drift specification

[Mike S]

On 9/10/2014 7:00 PM, Tony wrote:
> I've just noticed that TI and Linear's specs for 'Long Term Stability'
> (typical) are different. TI state 20ppm/1000Hr while Linear state
> 8ppm/SQRT(kHr). That's  a big difference - is this likely to be a real
> difference or just specmanship?
>
> I note that Linear (in Note 4) also state that "Devices with maximum
> guaranteed long-term stability of 20ppm/SQRT(kH) are available."
> Presumably they would be a special order as there doesn't appear to be a
> unique part no. Would they be likely to be much more expensive?

Isn't 8ppm/SQRT(kHr) better than 20ppm/SQRT(kH)? Why would the latter be 
more expensive? Or is it the difference between "typical" and "guaranteed?"

-- 
Mike