843251AGI-04LFT

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The 843251AGI-04LFT is a series of extremely-low-noise, small-sized clock generators and clock multipliers, featuring 3.3 V, 1.8 V and 1.2 V LVTTL/LVCMOS outputs. It is one of the most cost-effective and performant devices in this particular clock/timing category, with a host of versatile features including selectable output frequency, high frequency stability, and very low power consumption.

The 843251AGI-04LFT is suitable for use in a variety of applications in a post-volume production environment, such as advanced desktop PC, set-top box and digital TV systems, portable audio/video players, high-speed optical networks, telecom systems and auto IT products.

The 843251AGI-04LFT works by first receiving an input clock signal, which can be from an oscillating crystal or another suitable clock source. The device then employs a phase-locked loop (PLL) mechanism to generate high-accuracy output clocks with a host of functionalities including adjustable frequency, low power consumption, low jitter and very low noise. By precisely controlling the phase of the output signal and its relationship to the input clock, the PLL technology employed in the 843251AGI-04LFT can achieve extremely tight frequency stability, making it ideal for applications where accuracy is critical.

The 843251AGI-04LFT also features additional functionalities, such as a spread spectrum clock emission (SSCE), which reduces EMI radiation and makes it more suitable for a variety of applications. The 843251AGI-04LFT also features clock select capability, enabling it to be used as a clock selector and multiplier. This allows the device to output multiple copies of the same signal, at different frequencies, which can be used to feed a variety of downstream components.

The 843251AGI-04LFT also offers a wide range of input and output power voltages, with typical supply currents of just 0.5 mA and a power-down option. This ensures the device is suitable for a variety of applications that have stringent power requirements. The device also features a low phase jitter of just 0.24 ps, making it suitable for synchronising multiple clocks in systems that require timing accuracy. The 843251AGI-04LFT also offers an integrated supply voltage regulator for low-voltage operation and is designed with a fanout of 2 for lower propagation delays.

The 843251AGI-04LFT is a highly-integrated, cost-effective and performant clock generator and clock multiplier, suitable for a variety of low-voltage applications where tight frequency stability, low power consumption and low-noise are essential. The device offers a host of versatile functionalities and can be used to precisely control the output frequency or used as a clock selector and multiplier.

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