Thermally improved chip scale atomic clock devices

Louise Smyth

Microsemi Corporation has announced its new thermally improved chip scale atomic clock (CSAC) components with full operating and storage temperature. The new devices offer the lowest power holdover atomic clock technology without compromising size, weight and power (SWaP) while operating at a wide temperature range.

With an operating temperature range of -10 to 70˚C, Microsemi’s new CSAC components are highly reliable, with improved product design, process enhancements and robust product verification/validation. The gbtechnology enables new applications and missions not possible in the past with traditional OCXO and Rubidium clocks, offering the lowest SWaP clock technology in the industry at 17 cubic centimeters (cc) in size, 35g of weight and only 120 milliwatts of power. Microsemi’s CSAC product offers ±5.0E-11 accuracy at shipment and a typical ≤ 9.0E-10/month aging rate, which makes it suitable for many low power atomic clock holdover applications.

According to the Crystal Oscillator Market—Global Forecast & Analysts report posted by Markets & Markets, the total available market (TAM) for the overall oscillator market is estimated to be $2.4 billion in 2016, with OCXO markets targeted by CSAC estimated to have a serviceable addressable market (SAM) of $260 million in 2016.

Microsemi’s thermally improved CSAC products support the company’s strategic presence in the defense and security markets, targeting applications such as low power holdover against GPS vulnerabilities for position, navigation and timing security. They are also suitable for holdover in underwater (ocean bottom nodal) applications and atomic frequency reference in T&M market applications.