SiTime timing solutions — The heartbeat of 5G™

5G is on the way to bring broadband speed over mobile networks. To support the future of 5G, communications infrastructure is undergoing a complete overhaulcreating 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.

If timing fails

  • You experience dropped calls and slow web browsing on your phone
  • New services, such as instantaneous download of your favorite epic movie, will halt
  • Critical connectivity used by autonomous vehicles may fail

SiTime helps to keep everything in sync with greater accuracy and stability. We’ve designed our MEMS timing solutions to deliver the performance and reliability that's needed to keep network infrastructure running, even under the most demanding conditions like extreme temperatures,  rapid airflow, shock, vibration, and electromagnetic interference.

Download Brochure: MEMS Timing Solutions for Communications & Enterprise

Excellent dynamic performance
Frequency slope (ΔF/ΔT): 1 ppb/°C, 10°C/min
Vibration immunity: 0.1 ppb/g
ADEV: 2e-11, 10s averaging time
PSNR: 0.2 ps/mV
Up to 30x more reliable than quartz
FIT rate: <2, MTBF: 1.2 billion hours


Wireless networks

Excellent dF/dT: 50 ppt/°C, Vibration resistant: 1 ppb/g

Learn More: 5G New Radio

Featured Parts: SiT95148SiT5711SiT5358
Microwave backhaul

Wide temperature range, Proven dynamic stability

Learn More: Microwave ODU

Featured Parts: SiT95148,  SiT5711, SiT5359
Data centers

Ultra-low jitter, low power, smallest size

Featured Parts: SiT95141SiT9501, SiT9375
Serial-data links

Better power supply noise rejection (PSNR) at 0.02 ps/mV

Featured Parts: SiT95145SiT9501, SiT9375
Precision GNSS

Maintains satellite lock under harsh conditions

Featured Parts: SiT5156, SiT5157, SiT5356
Optical communications

Smaller size, Wide temp range, Learn more

Featured Parts: SiT9501, SiT9375SiT9365
Timing servers

No activity dips, Resistant to thermal transients

Featured Parts: SiT95141SiT5711, SiT5156, SiT5356

Low aging, Programmable frequency

Featured Parts: SiT95141, SiT95145SiT5711, SiT5356, SiT5358

Features & Benefits

What are customers saying?

“Our electronics must deliver the highest performance and reliability while working in harsh environments. SiTime’s MEMS timing solutions enable us to deliver this benefit to our customers.”

SC Moon
VP of R&D
DASAN Network Solutions

"SiTime's SiT5356 Super-TCXO enables a new class of wireless devices to communicate with a base station without having to be perfectly calibrated in a factory setting. Subscriber units can now dynamically remove frequency offset, improving channel performance on the fly as needed. The world-class stability of the SiT5356 means that the firmware can focus on other things - set and forget."

Lev M. Shuhatovich
Hardware Architect
Skylark Wireless

Precision Super-TCXOs

  • 1 to 220 MHz, ±0.05 to ±0.25 ppm
  • Better dynamic stability with ± 1 ppb/°C frequency slope (ΔF/ΔT)
  • Up to +105°C temperature operation
  • Resilient to rapid temp change, airflow and vibration

Stratum 3E OCXOs

  • 1 to 220 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

Ultra-low Jitter Differential Oscillators

  • 1 MHz to 725 MHz, ±10 ppm, 0.07 to 0.23 ps jitter
  • Up 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

Clock Generators

  • 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

Jitter Cleaners, Network Synchronizers

  • 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

Related Resources

Application Briefs

5G New Radio (NR) – RRU, AAU, Massive MIMO

Application Briefs

Fronthaul and IP RAN Switches

Application Briefs

Microwave Outdoor Units (ODU)

Application Briefs

Open RAN (ORAN) – Macro and Small Cells

Product Briefs

Elite Precision Super-TCXOs for 5G, Small Cell and Time Synchronization

Product Briefs

Elite Super-TCXOs for GNSS Applications

Product Briefs

Emerald Platform™ Stratum 3E OCXOs

Product Briefs

Cascade SiT9514x Clock-System-on-Chip Family

Application Notes

AN10052 IEEE 1588 Precision Time Protocol (PTP) in ITU-T Standards

Application Notes

AN10063 TCXO and OCXO Stability Degradation

Technology Papers

Synchronization System Performance Benefits of Precision MEMS TCXOs under…


Whack an Oscillator Demo


SiTime MEMS Timing Solutions for 5G RRU


SiTime MEMS Timing Solutions for Open RAN


SiTime MEMS Timing Solutions for Optical Module


Network Evolution 5G - Timing and Synchronization

Featured Articles

Tough 5G Timing Requires MEMS Clock Sources


Timing Solutions for Communications & Enterprise