Silicon MEMS Outperforms Quartz
Silicon MEMS Outperforms Quartz
Best Reliability
Silicon is inherently more reliable than quartz. Unlike
quartz suppliers, SiTime has in-house MEMS and analog
CMOS expertise, which allows SiTime to develop the
most reliable products. Figure 1
shows a comparison with
quartz technology.
Why is SiTime Best in Class:
SiTime’s MEMS resonators are vacuum sealed using
an advanced EpiSeal™ process, which eliminates
foreign particles and improves long term aging and
reliability
World-class MEMS and CMOS design expertise
Figure 1. Reliability Comparison
[1]
Best Aging
Unlike quartz, MEMS oscillators have excellent long term
aging performance which is why every new SiTime product
specifies 10-year aging. A comparison is shown in Figure 2.
Why is SiTime Best in Class:
SiTime’s MEMS resonators are vacuum sealed using
an advanced EpiSeal process, which eliminates foreign
particles and improves long term aging and reliability
Inherently better immunity of electrostatically driven
MEMS resonator
Figure 2. Aging Comparison
[2]
Best Electro Magnetic Susceptibility (EMS)
SiTime’s oscillators in plastic packages are up to 54 times
more immune to external electromagnetic fields than quartz
oscillators as shown in Figure 3.
Why is SiTime Best in Class:
Internal differential architecture for best common
mode noise rejection
Electrostatically driven MEMS resonator is more
immune to EMS
Figure 3. Electro Magnetic Susceptibility (EMS)
[3]
Best Power Supply Noise Rejection
SiTime’s MEMS oscillators are more resilient against noise
on the power supply. A comparison is shown in Figure 4
.
Why is SiTime Best in Class:
On-chip regulators and internal differential architecture
for common mode noise rejection
Best analog CMOS design expertise
Figure 4. Power Supply Noise Rejection
[4]
SiTime MEMS vs. Quartz Aging
SiTime MEMS Oscillator Quartz Oscillator
8
SiTime
6
2X Better
4
Reliability (Million Hours)
Electro Magnetic Susceptibility (EMS)
60
Better
90
Kyocera Epson TXC CW SiLabs SiTime
Power Supply Noise Rejection
5.0
SiTime
3X Better
Power Supply Noise Frequency (kHz)
Additive
Integrated
Ph
ase
Jitter
per
mVp-p
Noise
(ps/mv
)