Temperature compensated crystal oscillator TG2520CEN suitable for Beidou positioning

Jun 18,2024
96 VIEWS

Crystal oscillator is an electronic device that electronic products rely on, and it is usually used in some high-end electronic products. The truncated sine waveform is the most popular output option for TCXO, and there are two main reasons for this. Firstly, it has low power consumption, improves thermal characteristics, and better aging and frequency stability performance. Secondly, it outputs better phase noise performance. In other words, when using the truncated sine wave as the output method, the quartz crystal oscillator will greatly reduce the number of harmonic components, making the crystal oscillator product have low phase noise performance

As a global satellite navigation system independently developed by China, one of the core components of the Beidou Navigation System is a high-precision time-frequency reference. Temperature compensated crystal oscillator (TCXO) plays a crucial role in providing stable and accurate clock signals. The Epson TG2520CEN temperature compensated crystal oscillator has become an indispensable core component in the Beidou positioning system due to its high stability, low phase noise, and miniaturization design. It not only improves the positioning accuracy and reliability of the Beidou system, but also provides reliable technical support for the optimization and innovation of navigation and positioning equipment.

Epson has launched a high stability temperature compensation crystal oscillator TG2520CEN, which is a small volume crystal oscillator with a size of 2.5x2.0mm. It is an active crystal oscillator, a quartz crystal oscillator, a four pin SMT crystal oscillator, with a power supply voltage of 2.8V to 3.3V and a frequency range of 12MHz to 52MHz. It supports CMOS output temperature compensation crystal oscillators. The TG2520CEN SMT oscillator has the characteristics of ultra small size, lightweight, low jitter, low power consumption, low loss, low energy consumption, low power supply voltage, low phase noise, high stability, and is suitable for reference voltage sources, communication equipment, Beidou positioning, wireless Bluetooth, smart meters, telemetry instruments, measurement machines, and wireless clock communication equipment.

In the Beidou positioning system, the TG2520CEN temperature compensated crystal oscillator is mainly used in the following aspects:

1. Accurate time synchronization: The Beidou system requires extremely high time synchronization accuracy to ensure the accuracy of positioning. TG2520CEN provides high-precision clock signals, ensuring precise synchronization between satellites and ground receiving equipment, and improving positioning accuracy.

2. Signal processing: When receiving and processing signals from Beidou satellites, TG2520CEN provides a stable reference frequency to ensure accurate demodulation and processing of signals, thereby improving system reliability and performance.

3. Frequency synthesis: Positioning equipment needs to operate on multiple frequencies, and TG2520CEN provides reliable reference signals for frequency synthesis through its high stability frequency output, ensuring the stability of multi band operation.

In practical applications, the car navigation system uses TG2520CEN as the clock reference, combined with the BeiDou positioning system for real-time navigation and positioning. The results indicate that the navigation system can still maintain high-precision positioning performance under various extreme temperatures, and the equipment performs well in long-term operation.