comment on this article

SiTime sampling differential MEMS oscillator

SiTime has introduced the SiT9501, a differential MEMS oscillator that is intended for 100G - 800G optical modules.

The SiT9501 is intended for high-performance applications, including datacentre switches, telecom routers, edge servers, AI/graphics cards, and storage controllers.

“Over the past 15 years, SiTime has developed and shipped two generations of MEMS resonators that are used in all our oscillator shipments to date. Our third generation MEMS is now ready and delivers up to 7 times better phase noise at half the power,” said Rajesh Vashist, CEO of SiTime.”

In anticipation of massive Internet traffic growth, driven by 5G, AI and cloud computing, data centres are increasing throughput. Optical modules and data communications equipment need to deliver faster data rates. Outdoor 5G infrastructure is subject to environmental stressors such as high-temperature, vibration and airflow that can degrade throughput. With the increased data rates and potential environmental stressors, timing margins shrink, requiring lower jitter oscillators to ensure the same quality of service.

In optical modules, a third of the PCB area is consumed by the optical sub-assembly, leaving little room for data processing electronics, and making small size a critical factor in oscillator selection.

SiTime’s SiT9501 differential oscillator offers the lowest jitter in the presence of environmental stressors, and the smallest size, and includes the following features:

  • Popular networking frequencies from 25 MHz to 644.53125 MHz
  • 70 femtoseconds of RMS phase jitter
  • 2.0 x 1.6 mm package, the industry’s smallest. Also available in other industry standard packages.
  • Wide temperature range, from -40 to +105°C
  • On-chip voltage regulators to filter power-supply noise, enhancing power integrity for module designs
  • Innovative FlexSwing driver reduces power consumption by 30% and integrates source-bias LVPECL resistors

Author
Neil Tyler

Comment on this article


This material is protected by MA Business copyright See Terms and Conditions. One-off usage is permitted but bulk copying is not. For multiple copies contact the sales team.

What you think about this article:


Add your comments

Name
 
Email
 
Comments
 

Your comments/feedback may be edited prior to publishing. Not all entries will be published.
Please view our Terms and Conditions before leaving a comment.

Related Articles