<p>➀ Microchip has developed a new chip-scale cesium atomic clock combined with an oven-controlled crystal oscillator for improved accuracy and phase noise.</p><p>➁ The atomic clock offers initial accuracy of ±0.5ppb, frequency drift of <0.9ppb/month, and maximum temperature-induced errors of <±0.3ppb.</p><p>➂ The device comes in two versions with different temperature ranges and frequency tolerances, and includes a microwave synthesizer and a microprocessor for advanced functionality.</p>