Sunday, May 8, 2011

SiTime Introduces MEMS-based Voltage Controlled Oscillators for Telecom

SiTime introduced a new family of MEMS-based Voltage Controlled Oscillators (VCXOs) for telecom, networking and embedded applications that serve as a drop-in replacement for older quartz-based oscillators.

The new SiT380X family of VCXO's boast sub-picosecond jitter as well as 10 times better pull range and linearity than quartz VCXOs. SiTime delivers a number of programmable features for these oscillators, such as frequency, voltage, stability, pull range and drive strength.

The SiT380X family consists of two products: the SiT3808, which operates between 1 and 80 MHz; and the SiT3809, which operates from 80 to 220 MHz. Key features include programmable to any frequency within the operating range with 6 decimal places of accuracy; widest pull range, up to ± 1600 PPM; linearity of less than 1%, which enables faster system synchronization; superior tuning slope (Kv) consistency minimizes variation in system PLL performance; and frequency stability, as low as ± 10 PPM for enhanced reliability.

Pin compatibility with existing quartz-based solutions makes the devices "drop-in" replacements. As with its other MEM-based products, SiTime provides customized samples in 48 hours and production quantities in 3 weeks.

"SiTime is using the power of silicon technology to drive the electronics industry's transition from passive timing components to active circuits using MEMS," said Piyush Sevalia, vice president of marketing at SiTime. "The Silicon-based SiT3808 and SiT3809 VCXOs offer unique features that are 10 times better than quartz, such as ± 1600 PPM pull range, 1% linearity and any frequency between 1 and 220 MHz. "