Communications & Enterprise

Communications & Enterprise

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): ±0.5 ppb/°C, 10°C/min
Vibration immunity: 0.1 ppb/g
ADEV: 2e-11, 10s averaging time
PSNR: 0.2 ps/mV


Wireless networks
Wireless networks

Excellent dF/dT: 40 ppt/°C, Vibration resistant: 1 ppb/g

Learn More: 5G New Radio

Featured Parts: SiT5711, SiT5501SiT5358SiT9501, SiT95148
Fronthaul switch
Fronthaul switch

Excellent dF/dT, Airflow, heat, power supply noise resistant

Learn More: Fronthaul Switch

Featured Parts: SiT5711, SiT5501SiT5358SiT9501, SiT95147
Distributed unit
Distributed unit

Excellent dF/dT, immune to board noise

Learn More: ORAN DU 

Featured Parts: SiT5711,  SiT95145, SiT95148
Microwave backhaul
Microwave backhaul

Wide temperature range, Proven dynamic stability

Learn More: Microwave ODU

Featured Parts: SiT5711, SiT5501SiT5359, SiT95148
Data centers
Data centers

Ultra-low jitter, low power, smallest size

Webinar: Impact of Timing on Synchronization in Data Centers and 5G Networks

Featured Parts: SiT5501SiT9501, SiT9375SiT95141
A new Smart network interface card unboxed on a white table

Excellent dF/dT, Airflow, heat, power supply noise resistant

Learn More: SmartNIC

Featured Parts: SiT5501SiT5358, SiT9375, SiT9501
Top of Rack / Leaf Switch
Top of Rack / Leaf Switch

Excellent dF/dT, Vibration resistant, Low jitter

Learn More: TOR / Leaf Switch

Featured Parts: SiT5711, SiT5501SiT5358SiT95145, SiT9501
Serial-data links
Serial-data links

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

Featured Parts: SiT95145SiT9501, SiT9375
Optical communications
Optical communications

Smaller size, lower power, wide temp range

Learn More: Optical Modules

Featured Parts: SiT9501, SiT9375SiT9365
Precision GNSS
Precision GNSS

Maintains satellite lock under harsh conditions

Featured Parts: SiT5501SiT5356SiT5156, SiT5157
Timing servers
Timing servers

No activity dips, Resistant to thermal transients

Featured Parts: SiT5711, SiT5501SiT5356SiT5156SiT95141  

Low aging, Programmable frequency

Featured Parts: SiT5711, SiT5501SiT5356SiT5358SiT95141, SiT95145

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


"Our proprietary 3G-to-4G bridge solution requires very stable timing over its operating life. SiTime provides the right timing performance required by our solutions."

Jay Robertson
Senior Vice President of Product

Precision Super-TCXOs

  • 1 to 220 MHz, ±0.05 to ±0.25 ppm
  • Better dynamic stability with ±0.5 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 rms phase 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 Notes

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

Application Notes

AN10063 TCXO and OCXO Stability Degradation

Application Notes

AN10064 Improved System Performance with Digital Frequency Tuning in…

Technology Papers

Synchronization System Performance Benefits of Precision MEMS TCXOs under…


How to Design with SiTime TCXOs and OCXOs


Whack an Oscillator Demo


SiTime MEMS Timing Solutions for Heterogeneous Computing


SiTime MEMS Timing Solutions for SmartNICs


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


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