AX7PBF4-155.5200C

Oscillators: AX7PBF4-155.5200C Application Field and Working Principle

Oscillators, also known as oscillating circuits, are electronic components used in many fields, from precision clocks and watches to communications and radar systems. The AX7PBF4-155.5200C is a miniature quartz oscillator with excellent performance. This article explores the application fields and working principle of this type of oscillator.

Application Fields

The AX7PBF4-155.5200C is suited to a variety of applications. Its overall stability, excellent performance, compact size and low power make it a great choice for use in miniature clocks, frequency measuring instruments, and communications. Its wide temperature range and low frequency jitter of < 10 ppm make it suitable for use in industrial and military applications.

The oscillator is also suitable for use in microcontroller circuits, phase-locked-loop circuits, and signal precision detection, which are important components of many consumer electronic products such as phones, audio systems, or GPS navigation systems.

Working Principle

The circuit structure of the quartz crystal oscillator is quite simple. As illustrated in the figure below, it consists of two parallel capacitors, an inductor, a quartz crystal, a bipolar transistor, and a resistor. As the name suggests, the quartz crystal is the core component.

The quartz crystal is basically a piezoelectric crystal. When a certain voltage is applied, the space lattice of the quartz crystal will vibrate at a certain frequency. This is the fundamental working principle of the quartz crystal oscillator.

The quartz oscillator utilizes the piezoelectric effects of the quartz crystal. When a voltage is applied, the quartz crystal will swing longitudinally, generating two out-of-phase electric fields, one of which is opposite to the applied voltage. A feedback loop is formed and the quartz crystal oscillates.

The two series capacitors, inductor and resistor form the electronic resonance circuit, whose impedance is determined by the resonance frequency of the quartz crystal. As oscillation of the crystal continues, amplified electrical signals will be transmitted to the outside through the resistor. The feedback loop continues and the overall electric frequency is stabilized by the quartz crystal. The oscillation frequency will not change significantly even in the presence of power supply fluctuations, temperature changes or vibration.

Conclusion

The AX7PBF4-155.5200C is an application-specific quartz oscillator developed for optical fiber communication systems. It is adapted to a variety of demanding conditions, from precision measurement and military surveillance to consumer electronics, and its excellent performance enables reliable and precise operation in all applications. The key to its effectiveness is its miniature design and simple yet reliable working principle: the combination of quartz piezoelectric effects and electronic resonance circuits.