CDCE949QPWRQ1

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Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers applications are used in myriad situations, with CDCE949QPWRQ1 being the most recent device to join their ranks. The CDCE949QPWRQ1 is a device developed by Texas Instruments to make clock/timing applications easier to design. It provides a number of features that make designing and implementing clock/timing circuits simpler, faster, and more efficient than before.

As far as applications, the CDCE949QPWRQ1 is primarily used in automotive and other industrial applications, such as connected equipment and factory automation. In any of these applications, there may be a need for accurately generating output clock signals from a reference clock signal. The CDCE949QPWRQ1 is designed for such situations. It can take a single reference clock signal and generate multiple output clock signals of different frequencies and with different configurations.

The CDCE949QPWRQ1 can provide up to six LVCMOS outputs, each up to 180MHz and with glitchless multiplexed operation. The device also provides a range of supporting features, such as programmable dead times that provide scheduled control of the output signals, jitter-attenuation filtering, clock recovery from incoming data streams, and programmable levels including TTL, low-voltage, zero-delay buffer for system-optimization and phase-matching. All these features help to make the CDCE949QPWRQ1 a highly flexible device for generating output clock signals.

At its core, however, the CDCE949QPWRQ1’s operations are governed by a fractional-N phase-locked loop (PLL) circuit. It uses this PLL to generate a clock output signal from the reference clock signal with a selectable frequency that is determined by a user-programmed input divider. The PLL is then used to achieve tight tolerance and low jitter performance of the generated signals, with the device incorporating flexible jitter-attenuation functions.

This PLL generates the desired output frequency by using an internal voltage-controlled oscillator (VCO) controlled by a negative feedback loop. This loop compares the frequency of the output signal with that of the reference clock signal and adjusts the VCO frequency to keep them in synchrony. This, in combination with the other programmable params, can be used to produce output clock signals with idiosyncrasies customized for different application scenarios.

The CDCE949QPWRQ1’s output clock signals have a wide range of features that make them suitable for a variety of applications. These features include programmable differential output pairs, adjustable drive strength and skew, clock synchronization and high-accuracy frequency settings, and dynamic switching between different output configurations. All these features help to make the CDCE949QPWRQ1 a very flexible and reliable device for generating clock/timing signals.

With its wide range of features and applications, the CDCE949QPWRQ1 is an ideal choice for clock/timing applications in a variety of scenarios. From industrial and automotive to connected equipment and factory automation, the device provides a highly flexible and reliable way of generating output clock signals with low jitter and high accuracy.

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