LP122F23IDT

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Crystals are used in many technological applications and form an integral part of modern electronic devices. The LP122F23IDT is a frequency-controlled crystal oscillator designed for mobile radio applications such as WCDMA, GSM, and 3G. It has a wide operating temperature range and a low power consumption, making it an ideal choice for applications where power efficiency is critical. This article explores the application field and working principle of this crystal oscillator.

The LP122F23IDT is a versatile crystal oscillator that can be used in various applications, such as WCDMA urBTS, GSM base station, GSM/3G data card, etc. It is highly reliable, with a guaranteed oscillation frequency over a wide temperature range, typically from -30°C to +85°C. Moreover, its low power consumption, less than 70 mW, allows for longer battery life in mobile devices.

The LP122F23IDT is based on a quartz crystal resonator. A quartz crystal is a piezoelectric material, meaning it generates a small voltage in response to a mechanical force, such as when it is vibrated at its resonance frequency. The LP122F23IDT uses this property of quartz crystals to generate oscillations. The crystal resonator is mounted on a printed circuit board and connected to two metal contacts, or electrodes, and two electronic elements. The electronic elements, along with the electrodes and the crystal, form an LC circuit, or tank circuit.

When an alternating current is applied to the electrodes, it passes through the circuit and induces vibrations in the crystal. This causes the crystal to expand and contract as the current alternates. The oscillations created by the crystal are then output from the oscillator. The output frequency depends on the size and shape of the crystal and can be precisely tuned by adjusting the electrical parameters of the LC circuit.

The LP122F23IDT is available in two versions: the standard and the low-supply versions. The standard version operates at voltages from 4.5 V to 5.5 V, while the low-supply version operates at voltages from 2.7 V to 4.5 V. This makes the crystal ideal for applications where power consumption is critical, such as mobile radio applications.

The LP122F23IDT is a highly reliable and robust crystal oscillator that is suitable for a variety of applications. Its wide operating temperature range, low power consumption, and precise frequency control make it an ideal choice for mobile radio applications.

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