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MEMS oscillator presents small size, power savings for mobile applications

Wed, 03/27/2013 - 3:31pm

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SiTime introduced the SiT15xx family of 32 kHz MEMS oscillators that are positioned to replace legacy quartz crystal resonators. This family is targeted at mobile applications such as smart phones and tablets, which require small size and low power. The family rivals quartz-based devices and is asserted to offer savings of 85 percent, cut power by 50 percent, and they are said to be 15 times more reliable. The SiT153x family operates from a 1.2-V to 3.63-V regulated power supply, and the SiT154x family operates from a 2.7 to 4.5V unregulated Li Ion battery. The family includes the SiT1532/42 – 32.768-kHz MEMS oscillators in a 1.5 mm x 0.8 mm chip scale package; the SiT1533/43 – 32.768-kHz MEMS oscillators in a 2.0-mm x 1.2-mm package that is pin compatible with quartz resonators; and the SiT1534/44 – programmable MEMS oscillators that support frequencies from 1 Hz to 32.768 kHz and are available in both the 1.5-mm x 0.8-mm CSP and the 2.0-mm x 1.2-mm packages. Features include the company’s NanoDrive programmable, low swing output that minimizes power and directly interfaces to the oscillator/RTC circuit in the downstream processor or PMIC; frequency stability of ±20 ppm at room temperature and ±100 ppm over 40°C to+85°C; and 500 million hours MTBF (2 FIT).

SiTime Corporation, www.sitime.com

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