The Miniature Atomic Clock (MAC-SA5X)

www.microchip.com/MAC
The Miniature Atomic Clock (MAC) was launched in 2020, setting the standard as the top-performing rubidium oscillator in terms of size and power efficiency. Since then, thousands of MAC units have been deployed across Communications, Test & Measurement and Aerospace & Defense sectors. Now, the MAC is being rolled out with even greater performance enhancements.

[@onjofilms]

That's only 730 micro seconds off potentially in a year. Not bad.

[@float32]

“One pulse per second pin for simple calibration and synchronization”
“Simple” is doing some heavy lifting there. 😅