The differential oscillator, which offers 10 PPM safety and jitter characteristics of only 500 fs, is an industry first and is ideal for communications, storage, and networking applications.

Sunnyvale, California – October 24, 2011 – SiTime Corporation, an analog semiconductor company, today announced the industry's highest-performance differential oscillators for timing, offering a unique combination of 10 PPM safety and 500 fs (femtosecond) jitter characteristics that only SiTime can provide. The SiT9121 and SiT9122 MEMS oscillators target high-performance communications, storage, and networking applications such as core and edge routers, SATA/SAS/Fibre Channel host bus adapters, cloud storage, servers, wireless base stations, and 10G Ethernet switches. These devices can be precisely configured to customer specifications and shipped with the industry's fastest lead times. Furthermore, each device offers an industry-standard footprint, allowing for the easy replacement of quartz differential oscillators without design or layout changes.

"Traditional differential oscillators based on existing quartz, SAW, and overtone technologies have inherent limitations in stability and reliability," said Piyush Sevalia, Vice President of Marketing at SiTime. "The new SiT912x differential oscillator offers a unique combination of ultra-high performance and programmable capabilities developed through SiTime's analog CMOS and all-silicon MEMS technologies." “Our innovative products are replacing traditional oscillators and accelerating the use of MEMS oscillators in the electronics industry,” he said.

The SiT912x family consists of the following devices:
SiT9121: Ultra-high performance differential oscillator (1-220 MHz)
SiT9122: Ultra-high performance high frequency differential oscillator (220-650 MHz)

The SiT912x MEMS differential oscillator offers the following features and advantages:
• Integrated RMS phase jitter of 500fs capable of meeting the stringent requirements of applications such as SONET
• Full frequency safety of ±10, ±25, ±50 PPM for improved system timing margin
• Wide frequency range: 1 MHz to 220 MHz for SiT9121, 220 MHz to 650 MHz for SiT9122
• Programmable frequency with 6-digit accuracy guaranteeing maximum system performance
• Configurable LVPECL and LVDS signal levels
• Provides 50,000g shock and 70g vibration resistance with 500 million hours of MFBF for high-reliability applications
• Operating voltage of 2.5V or 3.3V
• Supports industrial (-40°C to +85°C) and extended commercial (-20°C to +70°C) temperature ranges
• Supports industry-standard footprints for 5.0mm x 3.2mm and 7.0mm x 5.0mm packages
• Sample shipment within 48 hours and mass production lead time of 3–5 weeks

Sample supply of SiT9121 and SiT9122 differential oscillators is scheduled to begin in November 2011, and mass production is scheduled for February 2012. Price information is provided separately upon request.

Datasheet:
http://www.sitime.com/products/datasheets/sit9121/SiT9121-datasheet.pdf
http://www.sitime.com/products/datasheets/sit9122/SiT9122-datasheet.pdf