CDCV857DGGRG4

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CDCV857DGGRG4 is a PLL-based clock generator intended for use with multiple Digital Video (TV/VCR/DVD etc.) formats. The device is particularly well suited to applications requiring a low jitter clock source or multi-phase clock distribution.

The CDCV857DGGRG4 consists of a Phase-Locked Loop (PLL), a voltage controlled oscillator and a programmable oscillator frequency divider. The device provides an output frequency of up to 160MHz and is programmable over a wide range of frequencies and parameters. This makes it an ideal device for applications such as digital audio and video, security systems and telecommunications systems.

The working principle of the CDCV857DGGRG4 is based on the concept of a closed loop timing control. The external clock signal is received by the Phase-Locked Loop (PLL) and is compared to a reference clock signal. The deviate between the two signals is then used to adjust the frequency of the voltage controlled oscillator (VCO) to match the external clock signal. The programmed frequency of the VCO is then divided down to the required frequency output.

The PLL in the device utilizes phase-detectors to accurately acquire and track the external clock source. The frequency compensator of the PLL makes the system more robust and help keep control of the jitter present in the output clock signal. The VCO is configured and programmed to generate a precise frequency from its fundamental frequency. The divide-by-N selectors in the architecture help ensure the output frequency complies with the user-programmed settings.

The CDCV857DGGRG4 is ideally suited for digital video applications. It provides precise outputs for common sync signals such as the horizontal and vertical synchronization signals, subcarrier synchronization and differential signals. The device supports different video formats such as SMPTE 259M, SMPTE 292M, SMPTE 274M, HDTV and UHDTV. In addition to digital video applications, the device can also be used in communication systems, data acquisition and analysis systems and industrial control applications.

In summary, the CDCV857DGGRG4 is an ideal clock generator for providing highly precise and low jitter clock signals for multiple Digital Video formats. Its unique architecture and features make it the ultimate choice for complex clock distribution applications.

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