CDC421100RGETG4

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The CDC421100RGETG4 is a family of Clock Generators, Programmable Frequency Synthesizers, and Low Skew PLL-Based Clock Fanout Buffers. The CDC421100RM introduces a new clock synthesis technology to generate either precise integer frequency ratios or low jitter clock frequencies. It provides a precise method of frequency multiplication and division with excellent phase balance and low jitter performance.

A key component of the CDC421100RM is a PLL-based frequency synthesis circuit. This circuit creates clock frequencies with a high degree of accuracy and low jitter by effectively adapting the oscillator-based clock generation circuitry of other clock synthesis solutions. The integrated PLL circuit is able to synthesize any frequency from a fundamental reference clock frequency in the range of 14.3 MHz to 180 MHz.

The device also offers several features that are designed to provide a high degree of flexibility and repeatability when it comes to generating different clocks. Programmable frequency dividers allow for the creation of frequencies that are integer or fractions of the input clock frequency. The programmable dividers can also enable the generation of various sub-multiples or multiples of the specified output frequency. In addition, two different clock outputs can be programmed from a single reference clock.

The CDC421100RM is also equipped with an integrated bypass mode that allows the user to bypass the PLL-based clock synthesis circuitry and feed an external input clock directly to the output pins. This feature is useful for generating clocks that are already available at an external input pin and replicating them with low jitter to additional output pins. The device also offers a number of advanced features, including programmable output power-down and restart, integrated spread-spectrum output modulation, and programmable voltage output from 1.8V to 3.3V.

Overall, the CDC421100RM is an ideal solution for clock generation in applications that require high accuracy and low jitter. Its wide operating range, combined with its programmable frequency dividers and other integrated features, makes this device well suited for applications such as communication systems, computer peripherals, and embedded systems.

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