Hi,
We have an application where we need to predict drift between two nRF52833 systems in low power mode running from LFRC (low frequency RC oscillator).
Section 5.4.4.4 of the product specification shows that the LFRC has an accuracy of +/- 500ppm after calibration.
We're able to estimate the frequency offset between the two nRF52833s, but we'd really like to know how much that offset is likely change. Although the specification lists +/- 500ppm, we're hoping that much of this accuracy range is due to chip-to-chip manufacturing irreproducibility, and that specific chips have a much better stability / precision than this. We'd like to know how often we need to make a new estimate of the LFRC frequency difference between the two chips.
Are there any other materials, plots, or documentation that might show what kind of thermal stability / aging effects the LRFC has, independent of manufacturing irreproducibility?
