PL135-47QC-R

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The PL135-47QC-R is a high-performance CMOS Clock/Timing - Clock Buffers, Drivers device that provides flexible manipulation of frequency, phase and duty cycle of clock signals. It combines a low-power digitally controlled oscillator (DCO) with a phase-locked loop (PLL) in a small form factor. The device is highly integrated, with a wide range of output frequency selections and operational voltages.

The main application of the PL135-47QC-R is interfacing to asynchronous systems, clock synthesis, buffering and distribution, delay-matching and clock re-timing. As an interface to asynchronous systems, it provides clock and data synchronization, which significantly reduces jitter in systems with multiple clocks. The device can also be used to drive multiple asynchronous clocks that need to be synchronized and phase-aligned. The PL135-47QC-R clock buffer also has the capability to select alternate frequency and phase alignments, enabling tuning of phase relationship between input and output clocks. This is especially useful in digital phase-locked loop (DPLL) applications where the clock signals must have a specific phase relationship.

The working principle of the PL135-47QC-R is based on the PLL and DCO design, in which an oscillator generates a constant frequency signal and a PLL circuit controls the same oscillator to synchronize it with an input clock signal. The input clock signal is compared to the output of the oscillator, and the difference feedback to the oscillator, thus providing the necessary control for synchronization. The PLL produces accurate frequency synthesis and provides an output frequency that is an exact multiple of the input reference frequency.

The PL135-47QC-R has a wide range of operating frequencies, from 10MHz to 400MHz, and multiple output drive strengths, providing multiple choices for integrating into the intended application and target platform. It can operate any combination of outputs on the same chip in a single package, further simplifying integration and reducing the design cost. The integrated 50k-16bit programmable divider enables flexible and cost-effective frequency generation. The PLL supports adjustable frequencies, dynamic enabling and control of PLL loop bandwidth and output strengths setting.

The PL135-47QC-R offers an integrated spread spectrum output stage, which allows pulsewidth modulation (PWM) of the output clock. This feature provides an efficient way for reducing electro-magnetic interference (EMI) and enables improved timing performance in systems with multiple clock signals. On-chip integrated functions, such as reset, enable and programmable low-power mode, further reduce the number of external components and simplify system design. In addition, the PL135-47QC-R supports synchronous power-management, making it an ideal choice for power-sensitive applications.

In summary, the PL135-47QC-R is an integrated Clock/Timing - Clock Buffers, Drivers device that provides a wide range of operating frequencies, multiple output drive strengths, highly integrated features and features that improve timing performance in systems with multiple clock signals. It is designed for clock/timing applications and provides flexibility in terms of frequency, phase, and duty cycle adjustments. Its wide range of frequency options, programmable output drive strengths, integrated PWM stage, and programmable low power mode makes the PL135-47QC-R an ideal choice for a number of different clock related applications ranging from interfacing to asynchronous systems to frequency synthesis, buffering, and distribution.

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