SL28748ELCT

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The SL28748ELCT is a high-accuracy silicon timing device. It provides an improved level of accuracy with the same pinout as previous generation clock timing parts. It is the only device with a throughput of 6 ns skew at 100 MHz. This makes it ideal for time-critical applications, such as clocking data I/Os, controlling power and ensuring synchronous switching. The SL28748ELCT belongs to Clock/Timing - Application Specific family of microelectronic components.

The SL28748ELCT\'s core technology is based on a distributed architecture to provide low cycle-to-cycle jitter with high frequency accuracy. The device contains a temperature-stabilized voltage controlled oscillator (VCO) with a wide tuning range and frequency divider blocks. The frequency divider blocks are optimized to reduce operational power and provide fast frequency switching. This technology allows the device to be used in a wide range of timing applications.

In terms of its application field, the SL28748ELCT is suitable for systems requiring precise clocking, from clock synthesis and frame synchronization to clock distribution in microprocessor systems. It can be used in consumer multimedia components, communication devices, and storage applications, for example, for USB ports and communication interface circuits. It also works well in applications where timing accuracy and clock jitter are important, including portable audio players, game consoles, and digital televisions. Furthermore, the SL28748ELCT can be used in automotive systems, such as navigation systems, rear view cameras and infotainment systems.

To understand the functionality of the SL28748ELCT, it is important to understand the working principles of its component blocks. The device contains two integrated voltage controlled oscillators (VCOs): one for the 10 MHz to 250 MHz range, and one optimized for the 25 MHz to 150 MHz range. The divider blocks are programmable in step of 1 or 2, making possible a wide range of frequencies for both VCOs. The synthesizer uses these frequencies to generate the output clock signal. The output is selectable in one of four different modes including asynchronous control, low jitter mode, frame synchronization, or fixed frequency mode.

The SL28748ELCT also includes an Adaptive Retention Control (ARC) to ensure fast clock settling times. This ensures that the output clocks can switch from one frequency to another in minimal time, ensuring won’t miss any transitions. The SL28748ELCT also features a Wideband Cycle-Cycle Jitter Control (CJTC) allowing it to maintain low jitter performance over a wide input and output frequency ranges.

In summary, by using an advanced distributed architecture, the SL28748ELCT offers an improved level of accuracy than previous generation parts. It is suitable for precise, frequency changing, jitter sensitive timing applications, such as consumer multimedia components, communication devices, and automotive systems. The SL28748ELCT\'s component blocks can generate output clock signals at high frequency accuracy, allowing the device to be used in a wide range of timing applications.

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