CDC421A125RGET

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The CDC421A125RGET is a clock generator solution from Ultra Librarian that helps to generate a high frequency clock from a low frequency reference. This clock generator is capable of producing clock frequencies up to 125MHz from a low frequency reference of 2.5MHz. This versatile clock generator is used for the generation of a variety of high frequency clocks. It is well-suited for industrial, military, and medical applications.

Application Field

The CDC421A125RGET clock generator can be used in applications such as industrial controllers and data acquisition systems, commercial and military high speed communication systems, and medical test and measurement systems. In industrial applications, the clock generator finds use in motor controllers, high speed signal processing, pulse control systems, and machine control systems. In medical and test and measurement systems, it is used in high speed ranging and imaging systems, medical data acquisition and surgical automation equipment, and laboratory instrumentation.

In communications and military applications, the clock generator is used in high speed communication systems such as satellite communications, microwave communication systems, high speed digital signal processors, and high speed routers and switches. Additionally, the clock generator has been designed for use in aerospace and defense systems, and military ground and airborne systems.

Working Principle

The underlying working principle of the CDC421A125RGET clock generator is based on a low noise PLL circuit. This PLL circuit is formed with a voltage controlled oscillator (VCO) and a phase detector. The VCO has a frequency range of 1–125MHz and a tuning range of 0.2–2.5V. Furthermore, the adjustable PLL contains a divider which divides the clock frequency of the VCO in order to compare it with the reference clock frequency.

The phase detector then compares the VCO clock with the reference clock frequency, and based on this comparison, it generates a control voltage. This control voltage is then fed to the VCO circuitry, which results in a change in the oscillating frequency. This frequency is then stabilized through the action of the PLL formed by the VCO and the phase detector.

The clock generator also contains a power management circuit, which is responsible for reducing total power consumption. This circuit contains a switch-mode power supply, which is controlled by the PLL. The PLL is used to turn the power supply on or off based on the output frequency of the clock generator, which helps to reduce power consumption and extend battery life.

Conclusion

The CDC421A125RGET clock generator is a versatile solution for generating high frequency clocks from a low frequency reference. It is used in various applications such as industrial controllers and data acquisition systems, commercial and military high speed communication systems, and medical test and measurement systems. Its underlying working principle is based on a low noise PLL circuit and it also contains a power management circuit for reducing total power consumption. This makes the CBC421A125RGET an ideal solution for clock generation and frequency synthesis applications.

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