SI5356A-B02862-GM

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Clock/Timing, specifically Clock Generators, PLLs, Frequency Synthesizers, are integral components for many systems requiring timing synchronization and jitter reduction. In these applications, frequency is generated across a range of frequencies, signals must be divided, multiplied and modulated.

The ultra-low jitter silicon IC family, the SI5356A-B02862-GM, is one of the leading such product offerings. It is implemented as part of multiple high density, time-critical and cost-sensitive systems. The IC utilizes the best-in-class jitter performance and is comprised of a dual-channel, low noise PLL and three independent frequency reversing utility functions.

The SI5356A-B02862-GM is a fully programmable oscillator that provides high frequency and low jitter oscillation in both integer-N and fractional-N modes. It supports a maximum differential input frequency of 200MHz, with output frequencies up to 250MHz. The device offers low jitter over a wide frequency range and provides excellent line and load regulation for both the input an output clock nodes.

One of the key features of the SI5356A-B02862-GM is its low power consumption. At a 1.2V supply voltage, the device consumes only 125mW at 220MHz and 175mW at 250MHz. This makes the SI5356A-B02862-GM an ideal choice for cost-sensitive applications where power is of concern.

The device operates as a general-purpose clock generator that can generate a wide range of input output frequencies and can be programmed through its SPI interface. The internal architecture of the device consists of two independent PLLs, each of which can generate an output frequency separate from the other. Each PLL has a voltage-controlled oscillator that provides the input frequency. The output frequency is determined by the VCO frequency, the divider setting and the PLL multiplier.

The device also supports a wide range of phase/frequency modulation (PFM) modes, which can be used to generate signals with phase/frequency ratios of up to 8/1. It is also capable of frequency changes up to eight times faster than typical PLLs. This allows for more dynamic frequency adjustment and locking onto desired frequencies.

The device also supports independent output buffers, both differential and single ended modes, which provide enhanced noise reduction. The differential mode ensures that the output buffers maintain precise output levels even when the load changes.

Overall, the SI5356A-B02862-GM makes for an excellent IC for applications requiring exact timing synchronization and jitter reduction. Because of its efficient power consumption and wide range of features, it is the ideal choice for many high-density and time-critical applications.

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