Ultra-S table Mems Clock with 53 Parts-Per-Trillion Fractional Frequency Stability at 8 Hours

We demonstrate a MEMS-enabled clock that sets a new record 53 parts-per-trillion (ppt) fractional frequency stability at 8 hours averaging time, and stays below 100 ppt up to 12 hours. This is achieved using a dual-mode temperature stabilization approach along with a TCXO-inspired compensation scheme that corrects for residual errors in the frequency tracking system. These results represent more than 40x improvement from the previous record [1].