Application of Epson SG2520EHN differential crystal oscillator in OTN switches

With the rapid development of 5G and data centers, OTN (Optical Transport Network) switches, as the core hub of communication networks, bear the responsibility of high-speed data transmission and flexible business scheduling. Their performance directly affects the efficiency and stability of the network, and the operational efficiency and reliability of switches directly determine the quality and stability of data transmission. The Epson SG2520EHN differential crystal oscillator, with its excellent technical characteristics, has become an ideal clock solution for OTN switches, providing strong support for improving network performance and ensuring reliable data transmission.

一、 SG2520EHN crystal oscillator technology advantages:

1. High frequency fundamental frequency oscillation to meet high-speed transmission requirements

SG2520EHN adopts high-frequency basic (HFF) crystal unit technology, supporting a fundamental frequency oscillation range of 25MHz to 500MHz, perfectly adapting to the high-frequency signal requirements of OTN switches. Its high-frequency characteristics can reduce harmonic interference, ensure signal purity, and provide a stable clock reference for 400G/800G optical module communication.

2. Ultra low phase jitter, reducing bit error rate

The typical phase jitter of this crystal oscillator is only 19fs (in LV-PECL output mode), with a jitter upper limit of ≤ 50fs. The extremely low jitter level significantly reduces clock cycle fluctuations, effectively avoiding error problems in data transmission, and significantly improving signal clarity and system fault tolerance.

3. Differential output and anti noise design

SG2520EHN adopts LV-PECL differential output mode, which cancels out common mode noise through signals of opposite polarity, and its anti-interference ability far exceeds single ended output. This design is particularly suitable for OTN switches with high-density PCB layouts, which can suppress electromagnetic interference (EMI) and ensure signal integrity.

4. Wide temperature stability and miniaturized packaging

The crystal oscillator can maintain high frequency accuracy of ± 20ppm within the extreme temperature range of -40 ° C to+105 ° C, adapting to the harsh conditions of data centers and industrial environments. Its micro package size is only 2.5 × 2.0 × 0.74mm, solving the problem of limited PCB space in OTN switches and supporting more compact modular design.

二、 The application value of SG2520EHN crystal oscillator in OTN switches

1. Accelerate high-speed signal processing

In the digital signal processing and optical module driving of OTN switches, the high-frequency and low jitter characteristics of SG2520EHN can ensure strict synchronization of each module, reduce packet processing delay, and thus improve throughput and transmission efficiency.

2. Enhance network reliability

By suppressing the effects of noise and temperature drift, this crystal oscillator can reduce the error rate of optical modules and ensure the stability of long-distance transmission. For example, in the Broadcom PAM4 modulation optical module, its application significantly improves the transmission rate and error tolerance of fiber optic communication systems.

3. Support future technological upgrades

SG2520EHN has been applied to 400G optical modules and is compatible with the next generation 800G transmission requirements. Its forward-looking technology provides hardware support for the smooth upgrade of OTN switches, reducing the cost of future network expansion renovations.

The Epson SG2520EHN differential crystal oscillator, with its advantages of low phase jitter, wide temperature range adaptability, high-frequency support, and compact design, has become a key support for improving the operational efficiency and reliability of OTN switches. Against the backdrop of the surge in demand for high-speed and stable communication in fields such as 5G and data centers, SG2520EHN provides a reliable clock solution for the performance upgrade of OTN switches, driving the development of communication networks towards higher efficiency and intelligence.