60 to 220 MHz, Stratum 3E OCXO

The SiT5712 is a high frequency Stratum 3E OCXO that supports any frequency from 60 to 220 MHz output, ±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, it 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 SiT5712 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 required for high humidity environments

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.

World's smallest OCXO, 75% smaller footprint and 40% thinner
Oscillator Type OCXO
Frequency 60 to 220 MHz
Frequency Stability (ppm) ±0.005 (±5 ppb), ±0.008 (±8 ppb)
Operating Temperature Range (°C) -20 to +70, -40 to +80
Output type LVCMOS, Clipped sinewave
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
Voltage Supply (V) 3.3
Availability Sampling

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 60 to 220 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
  • Instrumentation
  • GNSS disciplined timing modules
  • Power & energy
  • Defense & aerospace
  • Long-range communications

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Electronics Industry Citizen Coalition Template Other Quality Documents
Electronics Industry Citizen Coalition Template Other Quality Documents
Manufacturing Notes for SiTime Oscillators Other Quality Documents
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SiTime Conflict Metal Declaration Other Quality Documents
SiTime Environmental Policy Other Quality Documents
SiTime Environmental Policy Other Quality Documents
SiTime Warranty on Date Code (16.72 kB) Other Quality Documents
SiTime Warranty on Date Code (16.72 kB) Other Quality Documents
ISO9001:2015 Certificate of Registration Other Quality Documents
Conflict Minerals Reporting Template Other Quality Documents
Conflict Minerals Reporting Template Other Quality Documents

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AN10002 Termination Recommendations for Single-ended Oscillator Driving Single or Multiple Loads Application Notes
AN10002 Termination Recommendations for Single-ended Oscillator Driving Single or Multiple Loads Application Notes
AN10006 Best Design and Layout Practices Application Notes
AN10006 Best Design and Layout Practices Application Notes
AN10025 Reliability Calculations for SiTime Oscillators Application Notes
AN10025 Reliability Calculations for SiTime Oscillators Application Notes
AN10028 Probing Oscillator Output Application Notes
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AN10033 Frequency Measurement Guidelines for Oscillators Application Notes
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SiTime's MEMS First™ and EpiSeal™ Processes Technology Papers
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DualMEMS and TurboCompensation Temperature Sensing Technology Technology Papers
DualMEMS and TurboCompensation Temperature Sensing Technology Technology Papers
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