CHANDLER, Ariz. - Microchip Technology has introduced the Space CSAC-SA65 chip-scale atomic clock for size-, weight-, power-, and cost-constrained space systems.

The radiation-tolerant atomic clock provides radiation tolerance of at least 30 kilorads (krad) and operates from –40°C to +80°C. The device consumes less than 120 milliwatts and occupies less than 17 cubic centimeters of volume.

The CSAC-SA65 is designed for low Earth orbit (LEO) missions and is intended for applications including satellite timing and frequency control, satellite clock references, assured positioning, navigation and timing (PNT), and satellite cross-linking.

The device includes 1-pulse-per-second (1 PPS) input and output capabilities for system synchronization. Its atomic frequency reference can also support timing operation without continuous dependence on external references such as Global Navigation Satellite System (GNSS) signals.

Microchip says the CSAC-SA65 builds on the company's Space CSAC-SA45 and is manufactured using radiation-tolerant commercial electronic components. The company says the approach can provide shorter lead times and lower costs than traditional space-grade timing solutions.

Microchip supports the CSAC-SA65 with ClockStudio software for atomic-clock control and analysis and a CSAC Developer Kit. The device, part number 090-02789-007, is available for purchase.

For more information, visit https://www.microchip.com/.