XR81411-F

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Clock/Timing is a core component in the design and development of any communication network which is the main purpose of the XR81411-F product. XR81411-F can be thought of as a small-sized chip which is used to generate a precision clock from an external crystal. It can also be used to generate an output clock that is phase locked with the external clock.

The XR81411-F clock generator is a high-performance and cost-effective solution for complex data network systems. It is designed to help reduce system cost and decrease board space for today’s silicon applications by providing low jitter and wide frequency support. The XR81411-F can be used in both single- and multiple-clock solutions.

The XR81411-F device is a high-performance frequency synthesizer based on a Delta-Sigma (ΔΣ) modulator that can provide excellent clock reference stability and dynamic performance over temperature, supply and process variation. The device offers an external crystal oscillator input and can be used as a low-jitter oscillator or oscillator replacement with programmable parameters. It provides a multi-output clock reference that is generated from a single external crystal.

The working principle of the XR81411-F is that it uses the external clock signal as the reference clock to generate low-jitter clocks. This reference clock is first amplified, filtered, and then fed into a phase frequency detector (PFD), which is responsible for detecting the phase difference between the reference clock and the feedback clock. This information is then used to generate a control voltage that is dependent on the frequency error of the feedback clock. This control voltage is then sent to a charge pump, which is responsible for generating a control current which is then used to drive the voltage-controlled oscillator (VCO). The output of the VCO is then given to the divider, which divides it down to generate the output clock with low-jitter.

The XR81411-F is mainly used in data acquisition systems, communications systems, memory interface, and industrial control systems. It can also be used in embedded systems where the clock requirement is changing frequently and the system needs to be quickly adapted by reprogramming the clock parameters. This device is also used in clocking solutions for 10/100/1000BASE-TX and 10G Ethernet systems. It can provide any combination of two or four reference clocks and supports output frequencies up to 350 MHz.

In conclusion, the XR81411-F device is a high-performance and cost-effective solution for complex data network systems. It can help reduce system cost and decrease board space for today’s silicon applications by providing low jitter and wide frequency support. It is ideal for applications requiring low jitter clock generation, dynamic programming of output frequencies, and support for multiple output frequencies. The device can also be used as an oscillator replacement by providing a low-jitter oscillator clock as an input reference.

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