The SG-9101 Series is a Programmable Spread Spectrum Crystal Oscillator from Epson. The SG-9101 series features spread spectrum, of which all the characteristics are programmable. It includes the typical modulation type and spread, modulation profile, and modulation frequency. Furthermore, the rise/fall times can be adjusted to help lower EMI. Using the Fractional-N PLL technology, any frequency from 0.67MHz to 170MHz can be programmed down to 1ppm resolution. It operates from 1.8V to 3.3V and has a wide operating temperature of up to 105°C. It is available in 4 standard 4-pin packages.