Microchip SA.45s Temperature Range and Preheating
Announcing the SA65 Chip-Scale Atomic Clock with Enhanced Performance
Reduce design costs by ensuring compatibility with SA65 and SA.45s


Military platforms, seafloor surveying systems, and remote sensing applications require precise timing for successful mission execution. Chip-scale atomic clocks (CSACs) ensure stable and accurate timing even without a Global Navigation Satellite System (GNSS).

On the 19th, Microchip released the 'SA65 CSAC' for extreme environments. The new product is an embedded timing solution with enhanced environmental durability. Compared to the previous generation 'SA.45s CSAC', it has a wider temperature range (operating temperature range -40 to +80℃, storage temperature range -55 to +105℃), higher frequency stability, and 33% faster preheating at low temperatures (2 minutes at -40℃).

The enhanced performance of the SA65 CSAC offers significant advantages to those developing highly portable solutions for military applications such as A-PNT (Assurance of Position, Navigation and Timing) and C5ISR (Command, Control, Communications, Computers, Cyber, Intelligence, Surveillance and Reconnaissance).

Provides precision timing for portable and battery-powered applications requiring continuous operation and holdover in GNSS-free environments. Additionally, it is compatible with the SA.45s in terms of form and function, minimizing redesign costs and improving performance and environmental sensitivity.

Microchip supports buyers of its CSAC atomic clock family with the '990-00123-000' developer kit, associated software, user guides, and technical support. To date, Microchip has shipped more than 275,000 rubidium clocks, 138,000 CSACs, 12,500 cesium clocks, and 200 active hydrogen masers.