LMK04828SNKDREP

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The LMK04828SNKDREP is a Clock/Timing product broadly classified as Clock Generators, PLLs, Frequency Synthesizers. This low jitter clock generator is a single chip programmable synthesizer that comprises several sub-blocks including the 25.78MHz crystal oscillator, a crystal clock generator, a frequency source multiplier and a pulse mould signal generator. It has a low power consumption of 495mW and provides a good signal-to-noise ratio in the form of higher stability and less jitter.

The main application of the LMK04828SNKDREP is in the following fields: communications and networking, computer, test and measurement, broadcast, industrial and medical. More specifically, it can find a wide usage in notebooks and desktops, 10/40/100 Gbps networking, remote radio stations and any other radio-frequency broadcast needs, local area networks and cable infrastructures, GPS time sources, cellular and wireless communications, digital video broadcasting, surveillance and security systems.

Due to its multi-function design, the LMK04828SNKDREP incorporates several components and technologies to ensure its efficient and accurate transmission of digital signals and analog clocks. Its working principle lies in the combination of a highly precise oscillator, a charge pump and a frequency-locked loop (FLL) with a phase-locked loop (PLL). The main idea behind the construction of the device is to oscillate in an external oscillator of similar behavior and to synchronize the result with a provided reference.

The starting point of the LMK04828SNKDREP is the generation of a 25.78MHz oscillating signal from the highly precise crystal oscillator. This signal is then used as the reference source for a FLL circuit that eventually delivers a 768kHz signal as the output. This output is multiplied many times according to the requested output frequency and is provided to the external world.

In addition to its application versatility, the LMK04828SNKDREP also features a low jitter of 250 fs RMS, a wide output frequency range of 20-1000 MHz, type 1 and type 2 phase jitter of 250fs and 400fs respectively and a noise margin spread of 0.005%. The device is fully integrated offering low EMI and low power consumption of 495mW. All these features make the LMK04828SNKDREP ideal for many market segments requiring clock stability.

In conclusion, the LMK04828SNKDREP is a low jitter clock generator that can be classified broadly as a clock/timing product in Clock Generators, PLLs, Frequency Synthesizers for applications in many different market segments. Its prime capability of synchronizing a provided reference signal with the highly precise crystal oscillator enables it to deliver a low jitter, low power, low EMI and reliable output. Its extensive functional design and wide scalability due to its R&S SUT-4N platform also adds to its market acceptance.

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