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**Overview** In addition to the functions of a standard fixed crystal oscillator, this crystal oscillator includes a varicap diode and surrounding circuitry, allowing the frequency to be varied by the voltage applied to the varicap diode. For a VCXO, it is necessary to specify several unique specifications in addition to those of a standard fixed crystal oscillator. Generally, these include control voltage, frequency variable range, and slope, and if further specification is needed, linearity (or control sensitivity), input impedance, and input modulation frequency, among others.

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**Overview** In addition to the functions of a standard fixed crystal oscillator, this crystal oscillator is equipped with a varicap diode and surrounding circuitry, allowing the frequency to be varied by the voltage applied to the varicap diode. For a VCXO, it is necessary to specify several unique specifications in addition to those of a standard fixed crystal oscillator. Generally, these include control voltage, frequency variable range, and slope, and if further specification is required, linearity (or control sensitivity), input impedance, input modulation frequency, etc.

• Printed Circuit Board

Naka and Company is a company specializing in the development, design, and manufacturing of crystal (crystal) oscillators. In particular, we excel in high-frequency VCXO (voltage-controlled crystal oscillators up to 400MHz), TCXO (temperature-compensated crystal oscillators up to 100MHz), TC-VCXO (temperature-compensated, voltage-controlled crystal oscillators), and SPXO (fixed oscillators with high purity output up to 500MHz). Our products are highly regarded in communication systems and equipment in Japan and the United States, as well as in other industrial equipment (such as image processing in CAD systems). Additionally, we design and manufacture VCOs using LC resonance. Oscillators used in communication facilities (communication systems) require high quality and reliability. To meet this demand, we supply high-quality, stable oscillators after conducting rigorous shipping inspections. For more details, please request materials or download the catalog.

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