1 to 60 MHz, Stratum 3E OCXO
The SiT5711 is the industry’s smallest Stratum 3E OCXO with ±5 ppb frequency stability and 50 ppt/°C frequency slope (ΔF/ΔT). This device is engineered to provide the best dynamic performance. Leveraging SiTime’s unique DualMEMS™ and TurboCompensation™ temperature sensing technology, this OCXO delivers the most stable timing in the presence of environmental stressors such as airflow, temperature perturbation, vibration, shock, and electromagnetic interference (EMI).
The environmental robustness of SiT5711 enables unmatched ease-of-use and simplifies system design:
- Can be placed anywhere on the PCB
- No mechanical cover or shielding needed for thermal isolation
- No external regulators required
- No additional sealing needed for high humidity environments
The SiT5711 can be factory-programmed to any frequency between 1 and 60 MHz. In addition to the 9 x 7 mm package (the smallest OCXO available), this device is also available in common OCXO footprints such as 25 x 22 mm, 20 x 13 mm, and 14 x 9 mm to enable drop-in replacement of legacy quartz OCXOs.
| Oscillator Type | OCXO |
| Frequency | 1 to 60 MHz |
| Frequency Stability (ppm) | ±0.005 (±5 ppb), ±0.008 (±8 ppb) |
| Output Type | LVCMOS, Clipped sinewave |
| Operating Temperature Range (°C) | -20 to +70, -40 to +80 |
| Voltage Supply (V) | 3.3 |
| Package Type (mm²) | 9.0 x 7.0, 14.0 x 9.0, 20.0 x 13.0, 25.0 x 22.0 |
| Features | Frequency Slope: ±50 ppt/°C; Contact SiTime for ±3 ppb stability; Contact SiTime for -40° to 105°C; |
| Availability | Sampling |
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World's smallest OCXO, 75% smaller footprint and 40% thinner
10 times better dynamic stability under airflow and fast temp. ramp, ensures best system performance in harsh environments
- ±5 ppb over-temp. stability
- 2e-11 ADEV at 10 sec under airflow
- ±50 ppt/°C frequency slope (ΔF/ΔT)
Unmatched ease-of-use, simplifying system design
- No restrictions on PCB placement
- No mechanical shielding needed for thermal isolation
- Resistant to humidity
- No external regulator needed
Smallest size, ideal for high density and small form factor systems
- 9 x 7 mm footprint, 75% smaller
- 6.5 mm height, 40% thinner
20 times better vibration resistance, ideal for outdoor pole mounted equipment
Resistant to microphonic and/or board bending effects, ideal for large telecom PCBs
Programmable platform eliminates long lead times and customization cost associated with legacy quartz OCXO
- Any frequency from 1 to 60 MHz
- LVCMOS or clipped sine-wave outputs
On-chip regulators, no need for external LDOs or ferrite beads
Semiconductor-level quality and reliability, batch to batch consistency
No activity dips or micro jumps
- SONET/SDH Stratum 3E
- 4G/5G RRH, DU
- Base Stations
- Core and edge routers
- Carrier class switches
- IEEE 1588 boundary clocks
- IEEE 1588 grandmasters
- GNSS disciplined timing modules
- Instrumentation
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