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Differential oscillators operate from 2.5-3.3V

Posted: 26 Oct 2011 ?? ?Print Version ?Bookmark and Share

Keywords:differential oscillators? MEMS? phase jitter?

SiTime Corp. has rolled out differential oscillators for high performance telecom, storage and networking applications. The SiT9121 and SiT9122 can be used in core and edge routers, SATA/SAS/Fiber Channel host bus adapters, cloud storage, servers, wireless base stations and 10G Ethernet switches.

The MEMS oscillators tout 10, 25 and 50ppm total frequency stability for better system timing margin, said the company. They also feature 500fs of integrated RMS phase jitter (12kHz to 20MHz) to meet the stringent requirements of applications such as SONET, added SiTime. The SiT9121 and SiT9122 can be configured to customer's specification and shipped with the industry's fastest lead times, claimed SiTime. In addition, each device has industry-standard footprints, enabling easy replacement of quartz differential oscillators without any design or layout changes.

The SiT912x family consists of the SiT9121 (1-220MHz) and the SiT9122 (220-650MHz). They have configurable LVPECL and LVDS signaling levels, and deliver programmable frequency with six decimal places of accuracy, ensuring the highest system performance, stated the company.

The devices offer 50kg shock and 70g vibration resistance, along with 500 million hours MTBF for high reliability applications. The oscillators operate from 2.5-3.3V and in an industrial and extended commercial temperature range of -40C to 85C and -20C to 70C, respectively. They come in industry standard footprints of 5 x 3.2mm and 7 x 5mm packages, with sample shipments in 48 hours and production lead time of 3-5 weeks.

The SiT9121 and SiT9122 differential oscillators will begin sampling in November 2011, while volume shipments are scheduled for February next year.

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