402F37412ILT

402F37412ILT Application Field and Working Principle

A 402F37412ILT (also known as a 404F37711ILT) is a special type of crystal that is widely used for timing, synchronization, and frequency reference applications. It is a member of the family of voltage-controlled crystal oscillators, also known as VXOs. This article explains the application field and working principle of the 402F37412ILT.

Application Field

The 402F37412ILT is widely used in a variety of timing and synchronizing applications due to its small size, which makes the crystal ideal for portable and embedded applications. Some common application fields include:

• Wireless communication systems
• GPS receivers
• GSM cellular phones
• Wireless fidelity (WiFi) networks
• Radio frequency identification (RFID) tags
• Digital audio interfaces
• High definition television (HDTV) systems

Working Principle

The 402F37412ILT is a voltage-controlled type of crystal oscillator, meaning that its frequency of operation can be electronically controlled by an external voltage. This is accomplished by varying a capacitance-like parameter within the oscillator circuit, which in turn affects the oscillator’s frequency. This type of crystal is also referred to as a VXO.

The 402F37412ILT consists of two components: a quartz crystal, and a temperature compensation component. The quartz crystal serves as the frequency-determining element in the circuit, and is typically designed to have a specific frequency with a very low tolerance. The temperature compensation component helps ensure that the crystal remains stable over a wide range of environmental conditions.

In operation, an electrical field is applied to the quartz crystal via a voltage-controlled element, such as a varicap diode. This causes the crystal to resonate at a frequency that is determined by the applied voltage. The exact frequency can be adjusted by changing the external voltage, which is why the 402F37412ILT is considered to be a voltage-controlled type of oscillator.

In addition to its adjustable frequency feature, the 402F37412ILT is resistant to shock, vibration, temperature variation, and other environmental conditions. This makes the crystal ideal for use in a variety of timing and synchronization applications.

Conclusion

The 402F37412ILT is a special type of crystal oscillator that is used for timing, synchronization, and frequency reference applications. It is capable of electronically altering its frequency of operation by applying an external voltage, thereby making it ideal for portable and embedded systems. The crystal is also rugged and resistant to shock, vibration, and temperature variation.