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Oscillators-Slide7

MEMS oscillators are much less sensitive to EMI. Electromagnetic energy, which is common in most systems, can be picked up by exposed PCB traces which connect the quartz resonator to the IC containing the oscillator circuit. This noise can be coupled into the oscillator circuit and passed to the output, potentially adding jitter and noise to the system. By contrast, MEMS oscillators have no exposed PCB connections between the MEMS resonator and IC containing the oscillator, and the bond wires that connect the MEMS resonator to the CMOS IC are extremely short. This results in MEMS oscillators having up to 11.3dBm lower sensitivity (134 times on a linear scale) than quartz resonators.

PTM Published on: 2017-06-22