XR81111-F

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The XR81111-F is an ideal choice for a clock generator, phase-locked loop (PLL), or frequency synthesizer. With its flexible architecture and wide range of features, it has made it an indispensable part of many electronic systems. It is well suited for applications where size, cost, and accuracy are important.

The XR81111-F is an integrated panorama phase lock loop solution that is perfect for low phase noise and wide target frequency range. It provides a frequency synthesis solution that is as accurate and as low noise, with a minimal number of external components. It has a simple 3-wire control interface, allowing for up to three independent PLL blocks. Its low-noise design eliminates the need for external loop filters, making the XR81111-F an ideal choice for space-constrained applications.

The XR81111-F uses a closed-loop architecture to synthesize precise frequencies from an input reference signal. The reference signal is multiplied by a factor (M), which is added to an offset (Fo) and compared to a feedback signal (Fb). An error correction signal is generated based on this comparison, providing a precise output frequency. The output clock can be locked to the reference with a maximum frequency stability of ±2ppm.

The XR81111-F includes a wide range of features, including: Programmable clock output frequency range, Phase acquisition time of less than 100uS, Low-Phase noise performance, Frequency Modulation (FM) facility and Modulator synchronization circuitry. It also offers a wide range of important programmable settings, such as base-band frequency, modulation rate, modulation depth, loop filter parameters, and reference divider.

In addition to providing precise output frequencies, the XR81111-F can be used for synchronization. The on-chip synchronization circuitry enables the XR81111-F to accept a control signal from an external source, allowing multiple products to be synchronized to the same reference clock. It also supports multiple loop-filter configurations that allow for low-noise profile setting during signal acquisition.

The XR81111-F is designed for frequency stability and signal accuracy, making it ideal for applications such as communication systems, signal processing, frequency control, and embedded clock synthesizer. It is also well suited for applications where minimal power consumption, low cost, and small form factor are important considerations.

In summary, the XR81111-F is a versatile frequency synthesis solution. It excels in applications that require low-noise performance, wide frequency range, high accuracy, and low cost. With its high levels of flexibility and programmability, it is perfect for applications such as communication systems, signal processing, frequency control, and embedded clock synthesizer.

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