5G Cell Tower on a Sunset

SiTime timing solutions – The heartbeat of 5G™

5G communications infrastructure is creating a denser network, closer to the consumer and in less controlled environments. With shorter-range radios, higher frequencies, and tighter channels, there is an even greater demand on the timing solution. SiTime keeps everything in sync with greater dynamic stability. Our MEMS timing solutions deliver the performance needed to keep networks running, even under the most demanding conditions like extreme temperatures, rapid airflow, shock, vibration, and electromagnetic interference.


Ultra-stable performance

Frequency stability as good at ±5 ppb

-40°C to 105°C operating temperature

±0.2 ppb daily aging

Environmentally resilient

±0.3 ppb/°C, 10°C/min frequency slope (ΔF/ΔT)

1.5e-11 ADEV, 10s averaging time

0.2 ps/mV PSNR

Higher reliability and quality

>2.2 billion-hour MTBF; <0.5 FIT rate

<1 DPPM quality

50x better than quartz

Explore Applications

Data center with rows of network servers

AI / ML Offload Engines

Excellent dF/dT, tight stability over temperature, low aging
servers and storage sitime

Data Centers

Resistant to airflow and vibration, excellent dF/dT, low aging
distributed unit

Distributed Units

Holdover, excellent dF/dT, resistant to airflow, wide temperature range, low aging
5G fixed wireless access (FWA) module and smart antenna mounted on a metal

Fixed Wireless Access (FWA)

Tight stability, vibration resistant, wide temperature range
Electronic circuit board close up

FPGA Clocking

Higher reliability, stable over wide temperature, programmable timing
fronthaul switch

Fronthaul Switches

Excellent dF/dT, resistant to airflow and heat, better PSNR
Host Bus Adapter on a table

Host Bus Adapters (HBA)

Low jitter, ultra robust, small size
instrumentation sitime


Low aging, programmable frequency, tight stabilty
Telecommunication equipment with TV antennas, satellite dish and microwave antennas of mobile operators against blue sky with clouds and city

Microwave Backhaul

Wide temperature range, environmentally resilience, excellent dF/dT
optical module sitime

Optical Communications

Smaller size, lower power, wide temperature range
precision gnss

Precision GNSS

Maintains satellite lock under harsh conditions
core and enterprise sitime

Serial-data Links

Better PSNR, small size, low power
SmartNIC smart nic application


Excellent dF/dT, resistant to airflow and heat, better PSNR
timing server sitime

Timing Servers

No activity dips, resistant to thermal transients
Top of Rack Switch / Leaf Switch application

Top of Rack / Leaf Switches

Excellent dF/dT, vibration resistant, low jitter
core and enterprise sitime

Wireless Networks

Wide temperature range, environmentally resilient

Featured Products

Elite Platform®, Elite X™, and Elite RF™ Super-TCXOs provide exceptional dynamic performance and rich features

• 1 MHz to 220 MHz, ±5 to ±20 ppb
• Better dynamic stability with ±0.3 ppb/°C frequency slope (ΔF/ΔT)
• -40°C to +105°C temperature operation
• Resilient to rapid temp change, airflow and vibration


High precision ±5 ppb stability in the smallest OCXO footprint, ideal for emerging 5G and IEEE 1588 synchronization applications

• 1 MHz to 60 MHz, ±5 to ±50 ppb, up to +105°C temp operation
• No activity dips or micro-jumps
• Smallest 9 x 7 mm OCXO package
• Ease to use, no cover or restrictions on PCB placement


High-performance oscillators with 70 fs to 230 fs rms phase jitter, engineered for robust system performance

• 1 MHz to 725 MHz, ±10 to ±20 ppm
• -40 to +105°C temperature operation
• 0.02 ps/mv PSNR, I2C/SPI programmable
• Industry-standard packages as small as 2.0 x 1.6 mm


Highest level of clock tree integration with an integrated MEMS resonator, multiple clock ICs and oscillators in a single device

• 4 inputs, up to 11 outputs, 8 kHz to 2.1 GHz outputs
• On-chip MEMS resonator, eliminates external clock
• No quality and reliability issues associated with quartz clocks
• 10x more resistant to vibration and board bending


MEMS-based clocks with integrated resonator, eliminates the dependency on quartz along with all quartz related issues

• 1 to 4 PLLs, 4-inputs, up to 11 outputs, 8 kHz to 2.1 GHz outputs
• 26 ps phase build-out (hitless switching)
• Low wander mode, zero-delay buffer mode
• DCO with 50-ppt resolution


SiTime is transforming the world of timing.