CDCEL949PWRG4

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The CDCEL949PWRG4 is a configurable frequency synthesizer used for clock and timing applications. It is designed for applications with differential clock inputs and supports a range of frequencies from 25MHz to 1GHz. The device generates 8 output channels and provides a 3.2GHz reference clock signal. It offers a wide range of features, including programmable output frequency, selectable output signal polarity, spread spectrum and power control.

The CDCEL949PWRG4 integrates a phase-locked loop (PLL) circuit with digital frequency synthesis and programmable output frequency control. The PLL circuit works by comparing the input clock signal to a reference signal and using the discrepancies between these two signals to adjust the output frequency. The PLL circuit will then adjust the output frequency to be in sync with the input signal. The PLL circuit also provides an output frequency divider and a programmable reference divider to enable dynamic control of the output frequency.

The CDCEL949PWRG4 also includes an on-chip digital frequency synthesizer (DFS) which enables the device to generate multiple output clocks out of a single source clock. The DFS allows the user to select the output frequency and provides frequency switch points for smooth transitions between frequencies. The DFS also provides a Spread Spectrum Control (SSC) feature to reduce EMI/RFI noise.

In addition to the PLL and DFS circuits, the CDCEL949PWRG4 provides a power control feature. This feature provides the ability to program how much power the output channels use. This can help reduce power consumption of the device and improve system level power efficiency.

The CDCEL949PWRG4 provides a wide range of features and performance for clock and timing applications. This makes it suitable for a variety of applications including multimedia devices, communications, embedded systems, industrial equipment, and medical systems.

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