DS1090U-4+T

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The DS1090U-4+T is a fully programmable PLL (Phase Locked Loop) optimized for Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers applications. It offers a cost-effective solution to timing needs in a wide variety of applications. The DS1090U-4+T provides an adjustable output frequency range from 5MHz to 500MHz, a selectable output voltage range from 0.15V to 3.3V, an integrated phase/frequency detector, and an optional input programmable frequency range from 10kHz to 2MHz.

The PLL (Phase Locked Loop) technology used in the DS1090U-4+T offers an efficient and reliable solution to generate frequencies from the selected input clock. By locking the input clock to an external reference clock, it is possible to generate any frequency up to 500MHz in a precise manner while maintaining very low power and jitter. The integrated phase/frequency detector further enhances the accuracy of the generated clock signal.

The DS1090U-4+T provides a wide variety of programming options, allowing application designers to customize the PLL to their exact needs. These customization options include the output frequency, output voltage, programmable frequency range, and a spread spectrum clocking feature designed to reduce EMI (electromagnetic interference). Additionally, the DS1090U-4+T comes with an integrated thermal management system, ensuring the PLL operates under safe temperature conditions.

The DS1090U-4+T also offers several features that make it an ideal candidate for a wide range of Clock/Timing applications, such as embedded systems, broadcast systems, and industrial automation. These features include:

• High output frequency resolution
• Low supply current
• Programmable spread spectrum function
• Programmable output mute pin for low-power operation
• On-chip thermal management system
• Programmable control options
• Integrated phase/frequency detector

The high frequency resolution and low supply current of the DS1090U-4+T ensure that the generated clock signal is delivered accurately and efficiently. The programmable spread spectrum function also enables designers to reduce EMI, which is essential for many embedded applications. Additionally, the integrated phase/frequency detector is capable of locking the reference clock to the input clock within a few cycles, ensuring precise and accurate frequencies can be achieved.

The programmable control options of the DS1090U-4+T allow for greater flexibility in design programs. The design engineer can adjust the PLL parameters and settings via an application-specific interface. This allows for faster and more efficient development, reducing design time and resulting in a product that meets the specified requirements.

The on-chip thermal management system and the programmable output mute pin for low-power operation are both major advantages of the DS1090U-4+T. This ensures that the PLL remains within a safe operating temperature range and reduces power consumption, making it ideal for applications that require low-power operation. Furthermore, the integrated phase/frequency detector allows the input clock to remain locked to the selected reference clock, resulting in a precise output frequency.

In conclusion, the DS1090U-4+T is a highly-customizable PLL optimised for Clock/Timing applications such as embedded systems, broadcast systems, and industrial automation. The integrated phase/frequency detector, programmable spread spectrum function, and thermal management system are all key features that make the DS1090U-4+T an ideal solution for Clock/Timing applications where precision and efficiency are paramount.

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