Programmable OCXOs

Emerald Platform™ Stratum 3E OCXOs (oven controlled oscillators) and DCXOs (digitally controlled OCXOs) are engineered to solve the long standing challenges of legacy quartz OCXOs which are sensitive to environmental conditions, require protective components, and are difficult to procure and use. Emerald OCXOs are designed to provide better dynamic performance, unmatched ease-of-use, the smallest size, and shorter lead times. 

Stratum 3E OCXOs

High-precision Emerald OCXOs offer ±5 to ±8 ppb stability, 1 to 220 MHz frequency, and three standard OCXO footprints in addition to the smallest 9 x 7 mm footprint. These devices can be used as drop-in replacement of legacy quartz OCXOs in emerging 5G and IEEE 1588 synchronization applications while improving overall system performance and robustness.

  • 10 times better dynamic stability (50 ppt/°C ΔF/ΔT), resistant to airflow and thermal shock
  • Unmatched ease-of-use, eliminates restrictions on PCB placement, no mechanical shields needed
  • Programmable platform enables shorter lead time
  • On-chip power supply noise filtering, eliminates dedicated LDO
  • No activity dips or micro jumps
Device Datasheet Frequency Stability(PPM) Output Type Supply Voltage(V) Temp. Range(°C) Package Size(mm2)
SiT5711 1 to 60 MHz ±0.005 (±5 ppb) ±0.008 (±8 ppb) LVCMOS Clipped sinewave 3.3 -20 to +70 -40 to +80 9.0 x 7.0 14.0 x 9.0 20.0 x 13.0 25.0 x 22.0
SiT5712 60 to 220 MHz ±0.005 (±5 ppb) ±0.008 (±8 ppb) LVCMOS Clipped sinewave 3.3 -20 to +70 -40 to +80 9.0 x 7.0 14.0 x 9.0 20.0 x 13.0 25.0 x 22.0

Stratum 3E DCOCXOs

High-precision Emerald DCOCXOs (digitally controlled OCXOs) offer ±5 to ±8 ppb stability, 1 to 220 MHz frequency, and the industry's smallest 9 x 7 mm footprint. These devices can be used to replace legacy quartz VCOCXOs in emerging 5G and IEEE 1588 synchronization applications while improving overall system performance and robustness.

  • I2C digital frequency tuning eliminates board noise
  • 10 times better dynamic stability (150 ppt/°C ΔF/ΔT), resistant to airflow and thermal shock
  • Unmatched ease-of-use, eliminates restrictions on PCB placement, no mechanical shields needed
  • Programmable platform enables shorter lead time
  • On-chip power supply noise filtering, eliminates dedicated LDO
  • No activity dips or micro jumps
Device Datasheet Frequency Stability(PPM) Output Type Supply Voltage(V) Temp. Range(°C) Package Size(mm2)
SiT5721 1 to 60 MHz ±0.005 (±5 ppb) ±0.008 (±8 ppb) LVCMOS Clipped sinewave 3.3 -20 to 70 -40 to +80 9.0 x 7.0
SiT5722 60 to 220 MHz ±0.005 (±5 ppb) ±0.008 (±8 ppb) LVCMOS Clipped sinewave 3.3 -20 to 70 -40 to +80 9.0 x 7.0