Microwave Outdoor Units (ODU)

Long haul microwave equipment is typically installed in uncontrolled environments and remote areas. The timing components used in these deployments must provide high frequency stability and low phase noise, while withstanding vibration, wide operating temperatures, and fast temperature transients. SiTime MEMS precision oscillators and clocks provide the robustness and long-term reliability (high MTBF) needed for microwave equipment.

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SiTime MEMS Timing Benefits for RU/AAU/mMIMO

Complete MEMS clock tree

Precision MEMS Super-TCXO

Stratum 3E MEMS OCXO

MEMS clock-system on a chip / PLL

More robust in real world conditions

4x better dF/dT for best IEEE 1588/eCPRI

Resistant to airflow, heat, vibration

Graceful degradation up to 125°C

Thin profile, easy to use, reliable

No external quartz

No quartz reliability issues

No cover or shielding needed

Microwave Outdoor Units Block Diagrams

Full ODU

Split-mount ODU

MEMS Timing Solutions for ODU

Devices	Function	Key Features
Super-TCXO SiT535x 1 to 220 MHz	Reference clock for jitter cleaner and IEEE1588	±100 ppb, ±1 ppb/°C 105°C
OCXO SiT57xx 1 to 60 MHz	Reference clock for jitter cleaner and IEEE1588	±5 ppb, ±0.04 ppb/°C
Network Synchronizers and Jitter Cleaners SiT9514x 8 kHz to 2.1GHz	Ethernet, PCIe, processor & IEEE1588 clocking	4-in, 11-out, 4-PLL