Commercial space Chip Scale Atomic Clock module is radiation tolerant

Microsemi Corporation, a wholly owned subsidiary of Microchip Technology Inc.  announced the launch of its SA.45s Commercial Space Chip Scale Atomic Clock (CSAC), the industry’s first commercially available radiation-tolerant CSAC. Designed for low Earth orbit (LEO) applications, the device provides the accuracy and stability of atomic clock technology while achieving significant breakthroughs in reduced size, weight and power (SWaP) consumption.

As the newest member of Microsemi’s CSAC product family, the Commercial Space CSAC provides excellent drift performance and built-in 1 pulse per second (PPS) input for GPS disciplining, making the device well-suited for holdover applications. It is targeted at several other commercial space and space research applications, including:

• satellite timing and frequency control;
• satellite cross linking;
• assured position, navigation and timing; and
• Earth observation.

With many spacecraft manufacturers turning to commercial off-the-shelf (COTS) parts to meet performance, schedule and cost requirements, the Commercial Space CSAC offers a solution for many satellite missions.

According to a market intelligence report by Euroconsult titled, “Satellites to be Built & Launched by 2026 World Market Survey,” the total revenue for satellite manufacture and launch is expected to be $304 billion between 2017-2026. With revenues of $102 billion, LEO is expected to account for a third of the total market, with 82 percent derived from satellite manufacturing.

As a stand-alone atomic clock with a 10 megahertz (MHz) CMOS-compatible output, Microsemi’s Commercial Space CSAC is a timing module providing an impressive short-term stability (Allan Deviation) and frequency stability across the operating temperature (TempCo). A standard CMOS-level RS-232 serial interface is built into the device, which is used to control and calibrate the unit and provide a comprehensive set of status monitors. The interface is also used to set and read the CSAC’s precise internal time-of-day clock. Microsemi’s radiation-tolerant ruggedized oscillators also include OCXOs and state-of-the art EMXOs for applications that require higher accuracy and can support higher power consumption.