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Date: 12th July 2011

MEMS based voltage controlled temperature compensated oscillator from SiTime

SiTime Corporation has introduced ±0.5 PPM stable MEMS VCTCXO (Voltage Controlled, Temperature Compensated Oscillator) products that are targeted at Telecom, Networking and Wireless applications like SONET and Synchronous Ethernet based equipment, cellular base stations and repeaters, GPS and instrumentation.

SiTime says this new, programmable, Encore-based VCTCXO family consists of four devices, SiT5001, SiT5002, SiT5003 and SiT5004, all of which support frequencies up to 220 MHz, and 500 femtoseconds of integrated RMS phase jitter (12 kHz to 20 MHz).

"SiTime has used its Silicon MEMS technology and programmable analog expertise to accelerate innovation in the timing components industry," said Piyush Sevalia, vice president of marketing at SiTime. "Unlike the quartz industry, SiTime offers web-enabled software development tools that allow engineers to customize a SiTime device exactly for their application, request samples, and receive them within a week. This flexibility, along with unique features, 3 - 5 week lead times and 10 times better reliability than quartz, is accelerating the electronics industry's move to MEMS-based timing."

The SiT500x family consists of the following devices:
SiT5001: High Performance MEMS VCTCXO (1-80 MHz, ±1 to ±5 PPM)
SiT5002: High Performance, High Frequency MEMS VCTCXO (80-220 MHz, ±1 to ±5 PPM)
SiT5003: Ultra-Stable MEMS VCTCXO (1-80 MHz, ±0.5 PPM)
SiT5004: Ultra-Stable, High Frequency MEMS VCTCXO (80-220 MHz, ±0.5 PPM)

Key features and benefits of SiT500x family includes:
Any frequency within the operating range without any frequency gaps that occur with existing quartz TCXOs
Up to 6 decimal places of frequency accuracy, that is just not available from quartz TCXOs
Optional voltage control function, with pull range of ±12.5 PPM to ±50 PPM, provides the ability to fine-tune frequencies after soldering on the board, and increases system performance
SoftEdge programmable drive strength for optimal line impedance matching, better signal integrity and EMI reduction
Industrial (-40 to +85°C) and commercial temperature (-20 to +70°C) operation
1.8V and continuous 2.5-3.3V operation
500 million hour MTBF for best-in-class reliability, 10 times better than quartz
50,000 g shock and 70 g vibration immunity, 10 times better than quartz
100% drop in replacement for existing solutions, available in 4-pin 3225, 5032 and 7050 packages

Samples of the SiT500x devices are available now with production in late Q3, 2011. Pricing is available upon request.

For more info visit: www.sitime.com


 
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