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Oscillators

Oscillators are electronic circuits, primarily used in signal generating or processing applications. They use Positive Feedback, the same principle as used by the basic amplifier, to form a continuous cycle of operation. Thus, oscillators have the ability to convert electrical energy into regularly recurring waveshapes and/or timings.

CWX815-25.0M is a voltage-controlled crystal oscillator (VCXO), it is suitable for radio applications, telecom equipment, wireless communication, medical equipment, and audio/video equipment, among other fields. This oscillator may be used to generate a stable, accurate frequency ranging from 8.0MHz to 35.0MHz, with extremely low harmonic distortion. Its low power consumption makes it well-suited for portable applications.

The CWX815-25.0M oscillator operates using the fundamental effects of piezoelectric and crystal properties. A crystal, vibrating at its fundamental resonant frequency, is coupled to an integrated circuit, such as a voltage controlled crystal oscillator (VCXO). This type of oscillator utilizes the piezoelectric effects of a quartz crystal to achieve frequency and phase control based on an external voltage.

The quartz crystal behaves like a parallel resonant electrical circuit with a series resistance. The quartz element is driven into a physical resonance by electrical signals, typically in the range of a few kilohertz, and generates corresponding electrical signals at an equivalent frequency. When the quartz element is coupled to the VCXO IC, a feedback loop is created with an electrical signal limited by its series resistance. This oscillator is designed to produce a carefully determined frequency, determined by its load capacitors and other activations, which is then stabilized by the controlled ratio of the quartz to the voltage-controlled element.

The CWX815-25.0M is packaged inside an industry-standard 14-pin DIP. This makes it easy for designers to incorporate into existing designs, without the need for specialized tooling. Additionally, its compact size and low power consumption make it suitable for a variety of modem, radio, telecom, and audio/video applications - wherever a precise, stable, and low-cost frequency source is needed.

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