5G New Radio (NR)

Communications infrastructure is undergoing a complete overhaul, creating a denser 5G network and bringing equipment closer to the consumer. With higher frequencies, tighter channels, and shorter-range radios placed in less controlled environments, there will be an even greater demand on the timing solution. SiTime provides robust, easy-to-use MEMS precision oscillators and clocks that provide the resilience needed for the next generation of radios (5G NR).
SiTime MEMS Timing Benefits for RU/AAU/mMIMO
Complete MEMS clock tree |
More robust in real world conditions |
Thin profile, easy to use, reliable |
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Precision MEMS Super-TCXO Stratum 3E MEMS OCXO MEMS clock-system-on-a-chip / PLL |
4x better dF/dT for best IEEE 1588/eCPRI Resistant to airflow, heat, vibration Graceful degradation up to 125°C |
No external quartz No quartz reliability issues No cover or shielding needed |
IEEE1588/eCPRI Enabled RU/AAU/mMIMO

Precision TCXOs and Clocks for 5G NR
MEMS Timing Solutions | Function | Frequency | Key Features |
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SiT535x Super-TCXOs | Reference clock for jitter cleaner, IEEE 1588/eCPRI | 1 to 220 MHz | ±100 ppb, ±1 ppb/°C, 105°C |
SiT9514x Network Synchronizers and Jitter Cleaners | Ethernet, PCIe, processor & IEEE 1588/eCPRI clocking | 8 kHz to 2.1GHz | 4-inputs, 11-outputs, 4-PLL |
MEMS Timing Outperforms Quartz
Better Stability |
Better Frequency Slope |
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Better Vibration Resistance |
Better Aging |
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Better Allan Deviation |
Better PSNR (Power Supply Noise Rejection) |
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Watch Video: SiTime MEMS Timing Solutions for 5G RU
Application Notes and Papers
- Synchronization System Performance Benefits of Precision MEMS TCXOs under Environmental Stress Conditions
- Adaptive Drift Compensation for Holdover Oscillators
- AN10063 TCXO and OCXO Stability and System Impact Beyond Rated Temperature
- AN10064 Improved System Performance with Digital Frequency Tuning in Precision Super-TCXOs
- AN20003 SiT9514x Power Supply Noise Rejection
- AN20011 SiT9514x Dynamic Control of Outputs
- AN10052 IEEE 1088 Precision Time Protocol (PTP) in ITU-T Standards
See full list of related applications notes
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