LTC2312ITS8-12, where to read about Internal Reference - Long-Term Stability ?
(1000* hours at TA = +25°C in ppm)
[edited by: Prodif at 5:00 AM (GMT -4) on 1 Apr 2021]
There is no long term stability data available for the LTC2312 internal reference. If this is important to you I would recommend using a different ADC that supports using an external reference with specified long term stability. An example would be the LTC2362-12 with the LT1461 micropower reference which has a typical long term drift of 60ppm/rtkHr
Apologies, it seems that not all of the ADCs with internal reference have been tested for this. I am not sure of the specific reasons but my assumption is because we haven't received a demand for this or the datasheet specs is enough for some of the customers.
May I know the reason why it is important in your application? Can you give us some info about your application or may we know your target accuracy, or other specific requirements so we can help you check if the internal reference would be enough to meet your target specs?