In the market, you’ll find that some oscillators are MEMS type and some are not. Is there any difference between them?
Traditional oscillators rely on quartz crystals to provide a stable frequency reference. MEMS (microelectromechanical systems) oscillators have a complex structure consisting of a MEMS resonator to replace quartz crystals as the oscillating source. Through its internal PLL circuit, a MEMS oscillator can provide a desired frequency.
Comparing a traditional oscillator, MEMS oscillator offers much more stable frequency, smaller size, higher reliability (including AEC-Q100 certification for automotive use), faster startup and high integration, as below.
|Traditional Crysatal Oscillator||MEMS Oscillator|
|Frequency stability over Temperature|
|Jitter Close-In Phase Noise|