8T49N008A-004NLGI

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Application Field and Working Principle of 8T49N008A-004NLGI

8T49N008A-004NLGI is part of the family of Clock/Timing products, specifically in the Clock Generators, PLLs, Frequency Synthesizers category. 8T49N008A-004NLGI is being used to aggressively timing performance not available from other conventional devices. 8T49N008A-004NLGI belongs to the family of advanced digital phase-locked loops (PLL) devices.

Applications

8T49N008A-004NLGI is designed for high speed, low cost applications. It is used in a variety of applications including clock generation for networking and communication systems, clock and data recovery for high speed digital communications, multi-channel broadcast systems, and a variety of other applications.

Working Principle

The 8T49N008A-004NLGI applies the principles of phase-locked loops (PLLs) to provide highly accurate frequency synthesis which supports ultra-stable input to output timing relationships required in many demanding applications. It features an on-board low-jitter clock synthesizer, an input reference clock amplifier, a phase detector, charge pump, loop filter. By using these components, the 8T49N008A-004NLGI is capable of producing a wide array of frequency outputs from an input reference frequency.

Clock Synthesizer Sub-system

The 8T49N008A-004NLGI utilizes a highly accurate and low-jitter clock synthesizer sub-system on-board the device. At its core is the onboard 40MHz resonator, providing a very stable reference frequency. The clock synthesizer can generate up to 6 frequency outputs, including a reference clock output. All 6 frequency outputs are available simultaneously, and can support input reference frequencies between 1kHz and 150MHz with programmable intervals of 0.1Hz or higher.

Phase Detector and Charge Pump

The 8T49N008A-004NLGI also features an integrated phase detector and charge pump on-board. When the 8T49N008A-004NLGI is presented with an input reference frequency, the phase detector sub-system compares this frequency to the reference clock frequency produced by the internal resonator. When a difference is seen, the charge pump compensates for the difference by outputting a control signal, which controls the frequency and phase of the output. This results in a low-jitter, highly accurate output frequency and phase relationship.

Loop Filter Sub-system

The loop filter is responsible for the filtering of the control signal output by the charge pump to remove noise and other unwanted components. The 8T49N008A-004NLGI includes an integrated loop filter with a wide range of programmable parameters, allowing users to optimize the filtering to meet application specific needs. This ensures that the output frequencies remain highly stable and accurate, even under changing input conditions.

Output Sub-system

The 8T49N008A-004NLGI features an output sub-system capable of producing up to 6 individually programmable frequency outputs. These outputs are capable of frequencies up to 150MHz and adjustable resolution of 0.1Hz or higher. The outputs are also highly accurate, with low-jitter performance.

Conclusion

The 8T49N008A-004NLGI is an advanced digital phase-locked loops (PLL) device designed for high speed and low cost applications. By utilizing its onboard clock synthesizer, phase detector and charge pump, and loop filter sub-systems, 8T49N008A-004NLGI is capable of producing accurate and low-jitter outputs up to 150MHz with adjustable resolution of 0.1Hz or higher. This makes it an ideal choice for clock generation and clock and data recovery in high speed digital communications and broadcast systems.

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