Differential crystal oscillator, application in high-speed transmission network

With the development of science and technology, the data we transmit becomes larger, the transmission distance becomes longer, and the requirements for frequency stability become higher. The differential crystal oscillator is a high-performance, high-precision clock source that is widely used in high-speed network systems. Specific applications include but are not limited to:

1. Ethernet protocol network

In an Ethernet protocol network, differential crystal oscillators can provide high-precision clock signals to ensure the stability and reliability of network data transmission. For example, differential crystal oscillators can be used in the IEEE 1588 protocol network clock synchronization system in Gigabit Ethernet to achieve synchronization between various devices in the network.

2. Optical fiber communication network

In optical fiber communication networks, differential crystal oscillators can be used as stable clock sources to drive high-speed interface cards such as SFP/SFP+. In addition, industrial-grade differential crystal oscillators can also be used for clock synchronization in optical transmission to achieve synchronous transmission and processing of data in multiple computers.

3. Memory bus controller

In high-speed memory bus controllers, differential crystal oscillators can be used as the main source of clock synchronization signals to ensure synchronization and stability between various components. For example, in DDR SDRAM controllers, the use of differential crystal oscillators can help the system reduce timing inaccuracies, thereby improving the efficiency of memory access.

To sum up, differential crystal oscillators are widely used in high-speed network systems and can provide detailed and accurate clock signals to help ensure synchronization and stability between various devices in the network and improve the efficiency and reliability of data transmission.

Suzhou Hangjing Elec can provide differential crystal oscillator products with a variety of output modes: LVDS/LVPECL/HCSL/CML to meet the application of different customers in different scenarios, and is highly recognized by many customers.

Hangjing differential crystal oscillator product series recommendation

1. CO32*6P series (LVDS/LVPEL/HCSL)
product link: https://list.szlcsc.com/brand_page/12047.html corresponding to SMD3225-6P multi-frequency points

2. CO53*6P series (LVDS/LVPEL/HCSL)
product link: https://list.szlcsc.com/brand_page/12047.html corresponding to SMD5032-6P multi-frequency points

3. CO75*6P series (LVDS/LVPEL/HCSL)
product link: https://list.szlcsc.com/brand_page/12047.html corresponding to SMD7050-6P multi-frequency points

Scientific knowledge

What is a differential crystal oscillator?

The differential crystal oscillator is a high-performance, high-precision crystal oscillator used in clock circuits. Different from ordinary crystal oscillators, it has dual outputs, that is, there is an output signal at each positive and negative end, also called a differential output. A fixed amplitude difference is produced between the positive and negative output waveforms, while the frequency is provided by the circuit.

Differential crystal oscillator mainly consists of two parts: crystal and excitation circuit. Among them, the crystal is the core of the oscillator of the differential crystal oscillator. It realizes internal mechanical vibration under an external electric field through the piezoelectric effect, and converts it into a differential output after sequential amplification and filtering. The excitation circuit is responsible for providing drive voltage and polarity to the crystal to activate the vibration of the oscillator.

Differential crystal oscillator has the following characteristics:

1. Dual output : The differential crystal oscillator outputs both positive and negative waveform signals at the same time, which makes it have higher frequency stability and better anti-noise and anti-interference capabilities.

2. High precision : Differential crystal oscillator has relatively high frequency accuracy and long-term stability, and is suitable for use in electronic systems with high precision requirements.

3. Low jitter : Due to its low jitter property (Jitter), differential crystal oscillators are very popular in digital signal transmission.

4. Broad frequency range : Differential crystal oscillators have a wide operating frequency range, generally covering frequency bands from several thousand hertz to several GHz, and have different oscillation modes to choose from.

In short, the differential crystal oscillator is a crystal oscillator commonly used as a clock source for high-precision electronic systems. It has the characteristics of high precision, high noise immunity, and low jitter. It is widely used in computers, communications, audio and video, medical, military and other fields. .

About Suzhou Hangjing Elec & Tech Co., LTD

Suzhou Hangjing Electronic Technology Co., Ltd. was established in 2014. It specializes in the research and development, design, production, sales and service of quartz frequency control components, crystal oscillators, temperature compensated and constant temperature crystal oscillator products, and provides customers with a sound supply chain system. Provide a full range of services. Suzhou Hangjing is headquartered in Suzhou, with branches in Beijing and offices in Shenzhen/Xi'an. With Suzhou as the center, it radiates to Beijing, the Yangtze River Delta, the Pearl River Delta and the western development.

In the piezoelectric crystal industry, Suzhou Hangjing Electronics' technology and quality are at the forefront of the industry. The company fully complies with the ISO9001:2015 quality system and the national military standard GJB 9001C:2017 standard management model. The products produced comply with EU RoHS and Reach regulations. It can provide miniaturized, high-precision, wide-temperature, industrial-grade, and vehicle-mounted products. It has a rich product line, including quartz crystal oscillators, clock oscillators, high-end clock oscillators (differential minute oscillators/TCXO/VCXO/OCXO) and other products.

Suzhou Hangjing Electronics' products are widely used in industrial control, research institutes, military, aerospace fields, video systems, communication systems, measuring instruments, power equipment, program-controlled exchanges, automatic control, information platforms, radar navigation, digital products, high-definition surveillance, precision Instruments, radio communications, mobile communications base stations, national defense (moving target display radar), navigation, frequency counters, spectrum and network analysis instruments (frequency standards) and other fields.