Implement 65fs Typ. ※ 1. Low phase jitter Commercialization of differential output quartz crystal oscillator "SG7050EBN"

Differential output quartz crystal oscillator "SG7050EBN"

Seiko Epson Corporation (President: Mr. Usui, hereinafter referred to as "Epson") has launched the differential output ※ 4 quartz crystal oscillator "SG7050EBN" on the market and started providing samples. This product vibrates with fundamental wave ※ 2 and achieves low phase jitter ※ 3.

This product is suitable for frequencies ranging from 100MHz to 175MHz, with a phase jitter of 65fs Typ, High standard specifications have been achieved, which can meet the requirements of high-end routers and other wired network devices, as well as high-speed serial communication reference clocks.

In recent years, with the continuous progress of high-capacity and high-speed network communication, customers increasingly need reference clocks that can ensure more reliable performance when building various systems. The demand for high standard reference clocks in network devices is particularly prominent, requiring phase jitter as an important parameter of system performance to have low jitter characteristics.

To this end, Epson has independently developed a high-frequency fundamental mode quartz crystal unit ※ 5 that can oscillate with a fundamental frequency of over 100MHz, and combined it with a low-noise designed oscillation IC to achieve an LV-PECL differential output quartz crystal oscillator with 65fs Typ. low phase jitter characteristics.

Epson also plans to gradually launch products that respond to HCSL and LVDS differential outputs, enriching its product line to meet the demand of network devices for multiple output forms. Moreover, we have also prepared small products with dimensions of 5032 (5.0 × 3.2 × 1.0t (Typ.) mm) to provide customers with more freedom in design.

In the future, Epson will continue to use its unique quartz microfabrication technology and semiconductor technology as its core, leveraging its own advantages to provide component solutions, and striving to provide customers with safety, comfort, and convenience.

■Features of this product: 1. Low noise and low jitter

This product combines a high-frequency fundamental mode quartz crystal unit capable of oscillating with a fundamental frequency of over 100MHz with an oscillation IC with superior noise characteristics, achieving a 65fs Typ Low phase jitter.

Phase noise characteristics (starting frequency 156.25MHz, power supply voltage 3.3V)

2. Frequency range

Coping with the frequency range of 100MHz to 175MHz.

■The main specifications of this product

[Information about this product]

Please refer to the following webpage for specific information about this product.

SG7050EBN ：   http://www5.epsondevice.com/cn/quartz/product/osc/spxo/sg7050ebn.html

[Terminology Explanation, etc.]

※ 1 refers to the measured values under the following conditions: LV-PECL differential output, 156.25MHz oscillation, and deviation frequency from 12kHz to 20MHz. ※ 2 fundamental waves

The oscillation generated by the fundamental oscillation (once) in the vibration mode of a quartz crystal unit 3 shaking

The periodic clock jitter is one of the causes of image jitter or errors in data transmission 4 differential outputs

The way to output frequency signals with opposite polarities to each other. This method can deliver high frequencies and has characteristics such as strong noise resistance 5 High Frequency Fundamental (HFF) quartz crystal units

The high-frequency fundamental mode quartz crystal unit has a reverse stage structure that is processed using photolithography technology to only excite a few micrometers. This structure can ensure the strength of the chip while also oscillating at high frequencies with the fundamental wave. This quartz crystal unit can suppress high-frequency components around it, thus contributing to the stability of high-speed and high-capacity communication.