Crystal Oscillator Information | What are the applications of crystal oscillators in smartphones?
2023-07-25
As a key part of the "heart" of electronic products, crystal oscillators work on their principles and what role they can play.
If I want to find details similar to the human heart in electronic products, the first thing I think of is a crystal oscillator. The CPU of electronic products can run in an orderly manner. In addition to the power supply energy, the crystal oscillator plays an indispensable role. Its function is to provide the clock frequency to the CPU, which is characterized by extremely high stability.
For example: a multi-functional smartphone often uses more crystal oscillator models than a computer.
As a frequency control component, the crystal oscillator provides a frequency pulse signal source in the circuit module. During the transmission of the signal source, the crystal oscillator issues instructions with the cooperation of the circuit and is used in conjunction with other components. To put it simply, the function of a crystal oscillator is to provide a stable oscillation (pulse) signal of a certain frequency to the circuit, which is what we usually call a "clock signal." The smartphone CPU completely relies on these clock signals to complete all complex logic instructions.
The crystal oscillator used in a smartphone has at least three types of crystal oscillators with different package sizes, such as 32.768K frequency. The function of this crystal oscillator is to provide services for the time display clock function of the mobile phone. The SMD3225 packaged crystal oscillator 26MHz is also used in the mobile phone motherboard. The crystal oscillator is responsible for the Bluetooth and WIFI functions. To achieve global positioning, a high-precision temperature-compensated crystal TCXO 26MHz is required. The crystal oscillator used in mobile phones needs to have the characteristics of miniaturization, high stability, high precision and low power consumption.
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