CDC2509CPWRG4

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The CDC2509CPWRG4 Clock / Timing - Clock Generators, PLLs, Frequency Synthesizers is a high performance frequency synthesizer designed to work with Low Power Consumption, high accuracy, and an integrated Phase-Locked Loop (PLL) that makes it an ideal choice for a wide range of applications.

This device is primarily designed for telecommunications applications in which very low power is one of the key design considerations. The CD2509CPWRG4 generates any standard clock frequency with only one reference frequency input and offers superior phase noise performance to other similar frequency synthesizers.

The device uses a combination of phase-locked loop (PLL) control and general-purpose logic blocks to determine the output frequency. The PLL controls the operation of a digital phase detector, which compares the output frequency of the device to the reference frequency from the reference input. The comparison information is sent away from the phase detector to the charge pump, which adjusts the output frequency of the synthesizer to match the reference frequency.

To set the operating frequency of the synthesizer, an external reference input is selected, and a fixed duty cycle is programmed into the device. This duty cycle determines the ratio between the PLL’s output and the external reference frequency, and the output frequency is determined accordingly. The quality of the synthesized output is further improved by adjusting the loop filter parameters such as the capacitor or resistor values, or both.

The CDC2509CPWRG4 is used in many applications that require high performance and low power clock synthesis. This device is used in the design of digital cellular base stations, digital test and measurement equipment, optical transport networks, internet protocol (IP) based solutions, multimedia applications, medical instrumentation, speech processing systems, analog ADPLLs and so on.

This device offers an excellent phase noise performance and is capable of generating multiple output frequencies from a single reference input. It also provides improved immunity from voltage transients and total output harmonic content is kept below -45dBc, making it an ideal clock generator for digital systems.

The CDC2509CPWRG4 is also capable of locking onto a wide range of input reference frequencies and operating temperature ranges, making it suitable for any number of applications. This makes it a useful tool for designers looking to quickly and accurately generate high performance clock signals with minimal power consumption.

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