MEMS Oscillator Frequency Stability The frequency output of all oscillators varies over temperature. This variation is a crucial performance specification that is expressed as frequency stability and measured in parts per million (PPM). This stability rating is inclusive of variation over temperature, voltage, process and soldering. 32 kHz Frequency Stability In terms of frequency stability revolutionary TempFlatTM MEMS 32 kHz oscillators are two times more accurate than quartz XTALs. The measured frequency variation of MEMS-based 32 kHz oscillators is plotted in blue lines as shown below. The red lines represent the frequency variation range of 32 kHz crystal resonators (XTALs). At room temperature(25 C), 32 kHz devices are trimmed to<10PPM, while quartz XTALs demonstrate 20PPM variation. Over the entire industrial temperature range, the devices exhibit < 75 to 100 PPM stability compared to typical quartz XTALs with - 160 to -200 PPM. With temperature compensation added, 32kHz TCXOs exhibit frequency stability well within their +5 PPM specification over temperature as shown below(Fig.9). The devices has achieved TCXO-level stability in a timing solution that consumes up to 50% less power and is up to 80% smaller than quartz-based solutions. MHz Oscillator Frequency Stability The frequency variation of standard AT cut quartz crystal oscillators is shown below(Fig.10), along with the stability of typical MEMS oscillators.Since revolutionary MEMS oscillators have built- in temperature compensation, these devices exhibit very flat frequency stability over the entire industrial temperature range, with adequate margin at the low and high temperatures to meet the specifications of high performance applications.  25 PPM XOs, as shown in the plot below(Fig.11),have better frequency stability characteristics compared to quartz 25 PPM XOs.

Zhejiang A-crystal electronic technology co.,ltd (Formerly known as Taizhou Joinic Electronic Co., Ltd.) was founded in 2003, specialized in manufacturing high precision, high stability, and high reliability quartz crystal components. Offering a wide range of products (seven product families), and with an annual production capacity of 200,000,000 components, we are one of the largest producers of tuning fork crystals in mainland China. The company is committed to meeting international standards and complies with ISO9001:2008 quality management system, and the ISO14000 environmental management system certification.

A-Crystal Marketing Supports: Enterprise brand view: Technology creates value, brand is promise; OEM business: Global strategic OEM supplier; OEM business support: According to customer requirements, application environment, to provide high quality crystal and oscillator products research and development, design, processing and production; Promotion support: Customize promotional products, and work out promotion plans and promotion plans together with customers, and support the implementation. Product display plans, promotional posters, billboards, product brochures and product leaflet; PCBA matching test:  General board matching we mainly do: negative impedance testing, load capacitance matching, frequency matching, etc A-Crystal has an extensive and effective Sales and Marketing operation, with both a national and international network. We have very close relationships with several well know international distributors and end users, and are well known within the Chinese domestic market. The company has been rated by Zhejiang Provincial government and Taizhou City as a high-tech enterprise, and has been commended by Zhejiang Provincial government for its professional practices in export and import operations.   A-Crystal's philosophy holds in high regard the goals of sustainable development. We pursue these goals through technological innovation, listening to our customers, paying close attention to the welfare of our employees, supporting local communities, and minimizing our environmental impact.