Struggling with unreliable OCXOs?
SiTime’s Elite Platform Super-TCXOs deliver OCXO-level IEEE 1588 performance, but with higher reliability. Plus they are optimized for the most critical oscillator specs for accuracy in IEEE 1588, eCPRI, and time synchronization applications:
±1 ppb/°C frequency slope (ΔF/ΔT)
1.5 e-11 Allan deviation (ADEV)
With 105°C operation, vibration resistance and 1.9 billion hour MTBF, these devices reduce field failures and improve system robustness—even under airflow, thermal shock, vibration, and poor power supply.
Elite Platform Super-TCXOs vs Quartz OCXOs
Learn more about our products
| Device | Datasheet | Frequency | Stability(PPM) | Output Type | Supply Volt(V) | Temp. Range(°C) | Package Size(mm2) |
|---|---|---|---|---|---|---|---|
| SiT5356 | 1 to 60 MHz | ±0.1 ±0.2 ±0.25 | LVCMOS Clipped sinewave | 2.5 2.8 3 3.3 | -20 to +70 -40 to +85 -40 to +105 | 5.0 x 3.2 10-pin | |
| SiT5357 | 60 to 220 MHz | ±0.1 ±0.2 ±0.25 | LVCMOS | 2.5 2.8 3 3.3 | -20 to +70 -40 to +85 -40 to +105 | 5.0 x 3.2 10-pin | |
| SiT5358 | 1 to 60 MHz | ±0.05 | LVCMOS Clipped sinewave | 2.5 2.8 3.0 3.3 | 0 to +70 | 5.0 x 3.2 10-pin | |
| SiT5359 | 60 to 220 MHz | ±0.05 | LVCMOS | 2.5 2.8 3.0 3.3 | 0 to +70 | 5.0 x 3.2 10-pin |
Our robust and reliable Elite Platform Super-TCXOs are used to replace quartz TCXOs and OCXOs in 5G synchronization applications like RRUs, small cells, front haul switches, smart NIC, and servers.
Other key Elite Super-TCXO features:
• 1 MHz to 220 MHz frequency
• ±0.05 to ±0.25 frequency stability over temperature
• On-chip power supply noise filtering eliminates dedicated LDO
• Operates beyond rated temperature up to 125°C, ensuring continuous system operation
• I2C digital frequency tuning eliminates external DAC and sensitivity to board noise
• No activity dips or micro-jumps
How to Design with SiTime TCXOs and OCXOs
Precision oscillators for communications, enterprise and 5G applications – modes of operation; packages, design & layout; dual-layout recommendations; manufacturing guidelines.
Elite Platform Super-TCXO improves IEEE 1588 performance
Demo of oscillator time accuracy under airflow and heat. Performance of a SiTime Elite Platform™ MEMS-based Super-TCXO is compared to a quartz-based TCXO.
Whack an OCXO!
Watch real-time frequency data as a SiTime MEMS TCXO and a quartz OCXO are “whacked” at the same time, with the same amount of shock. The MEMS timing device stays stable as the quartz device frequency spikes.
