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Oscillators

An oscillator usually refers to a device that can use electronic means to generate a repetitive periodic signal, but the usage of the word has also been extended to unexpected things. CWX825-49.152M is one of the oscillators which belongs to a class of oscillators called High Frequency oscillators. This particular oscillator is used primarily in embedded applications requiring a stable frequency. They come in a variety of packages, including through-hole models such as the DIP-18 and SOT-23.

CWX825-49.152M oscillators deliver a stable frequency for a variety of application fields. It includes smart grid, medical, communications, Intelligent transportations, industrial automation and consumer applications. Their operating frequency is 49.152MHz ±50ppm. Their voltage is 3.3V. It also integrates an EFC circuit that offers high level of frequency precision and temperature stability. With its wide operating temperature range, this device can operate in temperatures between -30°C to 85°C. It is compliant with RoHS.

The working principles of CWX825-49.152M oscillator are as follows. First, a quartz resonator crystal is used as the timing element. An external oscillator circuit is connected to the crystal. This oscillator circuit is designed to oscillate at the crystal\'s resonance frequency. The external oscillator is typically a Pierce oscillator, with an amplifier, two capacitors, and the transistor Q1. The oscillations produced by the crystal are amplified by a power amplifier, and the output signal is coupled to the amplifier’s output. This output signal is then used as the input to the system, usually an embedded system.

Finally, there are several features embedded on the oscillator. Its output has a power-on reset function to reset any function inside the continuous running clock application. It also integrated a short-circuit protection to keep the device from over-heating or other damage. It offers symmetric 50/50% output waveforms. All of these features make the device extremely suitable for frequency stability, current supply, waveform and EMC application.

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