ZL30251LDG1

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The ZL30251LDG1 is a monolithic CMOS clock generator device designed to provide a high accuracy frequency source from crystal oscillator with Digital Delay Locked Loop (DDLL) architecture and supporting multiple frequency output ratio. It is classified under Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers for its various application fields and working principle.

The ZL30251LDG1 is designed to cover most frequency ratios of xtal clock sources. It contains a variable delay digital delay locked loop (DDLL) used to control the output frequency of the device. The application consists of system that requires a variable output frequency to control the local oscillator of a radio receiver system or a microprocessor system. The DDLL architecture allows dynamic tuning of the system frequency while providing a higher resolution than conventional phase locked loop (PLL) architectures.  

The ZL30251LDG1 is a low power, high performance CMOS clock generator device with two different die sizes to select from. It is capable to drive a wide range of load capacitances with excellent accuracy and jitter performance. It has an integrated crystal oscillator circuit with drive strength adjustable pins to allow flexibility in the system design.

In terms of its working principle, the ZL30251LDG1 contains a digital delay locked loop (DDLL) which controls output frequency of the device. The DLL consists of a reference clock circuit and multiple taps with different delay stages to the clock signal. The output frequency can be controlled dynamically by selecting the appropriate tap, which can then be used to control the local oscillator of a radio receiver system or a microprocessor system. The DDLL architecture has the advantage over PLL architectures since it provides a higher resolution, a range of different output frequencies, and can be used to dynamically adjust the system frequency.

The ZL30251LDG1 has a range of applications in radio receivers, microprocessor systems, and other systems where a high accuracy clock signal is required. It is suitable for use in a range of different operating frequencies and different system topologies to ensure the accuracy of the clock signals. It is also suitable for applications that require different frequency ratios due to its low power and high performance. Additionally, the DDLL architecture allows for dynamic frequency adjustment with higher resolution.

In conclusion, the ZL30251LDG1 is a monolithic CMOS clock generator device designed for use in various systems where accurate clock signal is needed. It is classified under Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers for its various applications and unique DDLL architecture, which provides higher resolution and allows for dynamic frequency adjustment.

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