The Next Generation of Timing & Frequency


Chip Scale Atomic Clock GPSDO

The CSAC GPSDO is the first commercial Chip Scale Atomic Clock (CSAC) available on the market. Jackson Labs Technologies, Inc. has teamed with Symmetricom to integrate it's Sa.45s CSAC into the CSAC GPSDO module. The CSAC GPSDO is a game-changing, disruptive technology culminating from decades of research sponsored by the U.S. Government. It is a breakthrough technology that allows a Cesium Vapor Cell Atomic Reference Oscillator to be packaged in a unit several orders of magnitudes smaller than legacy products, with more than an order of magnitude in power reduction, while out-performing many industry-standard Atomic Oscillators.

The CSAC GPSDO also includes a high-performance time-interval-counter that can measure the internally generated 1PPS signal from an internal 50-channel GPS receiver or an externally supplied 1PPS reference signal with a resolution of 20 picoseconds. The CSAC oscillator is phase-locked to either of these two 1PPS signals with better than 0.3ns average phase accuracy typically, and typically provides better than 5E-012 stability per day in holdover.

The CSAC GPSDO can be ordered with 3 different options:
  • Extended operating temperature range (-40°C to +85°C).
  • 10MHz CMOS output.
  • The ability to delete the phase noise filter.
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