EPSON X1G005901000915 SG2520VGN Low Phase Jitter Differential Crystal Oscillator

     With the implementation of 5G applications such as the Internet of Things and ADAS, as well as the growth of data traffic, network infrastructure has become more important than ever before. IT suppliers have been rapidly building data centers and have a huge demand for optical modules installed inside/within data centers. This application requires crystal oscillators to have low jitter and high stability, and the SG2520 series under Epson Crystal oscillators meets all these requirements, The following are the characteristics of our product, which will help improve the performance of optical modules. 1. The smaller external size of 2520 solves the PCB layout limitation of QSFP-DD transceiver. 2. High frequency basic oscillation and our HFF crystal make low jitter 19fs typical. 3. The internal integrated circuit can achieve a total tolerance of ± 20 × 10-6, including 105 ℃ operation and 10 years of aging.

    The SG3225EEN differential crystal oscillator, like the SG3225VEN, is one of the earlier similar products of Epson crystal oscillators. The new SPXO provides a frequency of up to 500MHz and low phase jitter. In addition, they are equipped with a compact oscillator IC developed by Epson, which can compensate for the frequency temperature coefficient of the built-in HFF crystal oscillator 4. Compared with previous products, using this IC allows Epson to reduce the footprint of SPXO by 63% and the cubic volume by 44%, In addition, they also have excellent frequency stability, with a frequency tolerance of only half that of SG2520EGN crystal oscillators and SG2520VGN crystal oscillators at temperatures of -40 to+105 ℃, while SG2520EHN and SG2520VHN are 40%. The new series has ideal characteristics suitable for small optical communication modules.

The SG2520EGN, SG2520VGN, SG2520EHN, and SG2520VHN crystal oscillators imported by Epson are very suitable for network equipment (routers, switches, optical modules, etc.), data center factory automation equipment, measuring instruments, high-speed DA/AD converters. In addition, they also have basic modes: the natural frequency of crystal unit vibration, 2 jitters: fluctuations in clock cycles can cause things such as image fluctuations in display and errors in data transmission, 3 differential output: a method of outputting frequency signals with opposite polarity. Differential output can achieve high-frequency transmission and has strong noise resistance. 4 High frequency basic (HFF) crystal unit: a crystal unit that can oscillate at high-frequency basic frequencies without damaging the strength of the crystal chip, because the use of photolithography technology can form a reverse table structure chip with only the vibration area of the crystal, which is reduced to a thickness of a few micrometers, HFF crystal units can suppress nearby harmonic components, thus contributing to the stability of high-speed, high-capacity telecommunications.