MEMS Oscillator vs. Traditional Oscillator

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 :+1: :+1::+1::+1:
Size Reduction :+1::+1: :+1::+1::+1:
Reliability :+1: :+1::+1::+1:
Jitter Close-In Phase Noise :+1::+1: :+1::+1:
Fast Start-Up :+1::+1: :+1::+1::+1:
Integration :+1::+1::+1: