SL23EP08SC-5HT

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clock/timing applications often require great precision and considerable complexity, and the SL23EP08SC-5HT is designed to meet these needs. This device is a quad-stage programmable frequency synthesizer from Silicon Labs that is ideal for frequency synthesis and clock distribution applications requiring high performance, flexibility and cost-sensitivity. It is also suitable for use in a wide range of consumer, medical, industrial, automotive and military applications.

The SL23EP08SC-5HT offers a number of features and benefits to help users more quickly and cost-effectively implement their systems. It supports multiple clock sources, including a crystal oscillator, LVCMOS, and HCSL inputs, making it suitable for a wide range of applications. The device has a 300 MHz base frequency and offers a 256 mV low-voltage oscillator input with an external reference clock of up to 50 MHz. It also uses automated, on-chip PLL algorithms to generate all four programmable clocks throughout the device, as well as power management states and an adaptive duty cycle control.

The SL23EP08SC-5HT also offers a clock distribution system with a built-in 2:10 or 2:8 or 2:6 fanout buffer. This system allows the user to control the output frequency and duty-cycle in 1/16th frequency intervals from the same source or from two separate sources. The system also supports multiple frequency outputs, allowing the user to select from various frequencies with the same device as well as temperature cycled frequency with 1/32nd frequency resolution for applications requiring high timing accuracy.

In terms of its principle of operation, the SL23EP08SC-5HT’s programmable frequency synthesizer can be divided into four main components: the phase-locked loop (PLL) phase rotator, control logic, phase accumulator, and PLL phase detector. The PLL phase rotator provides output frequencies by comparing measured and provided reference signals, as well as calculating and outputting only valid clock signals. The control logic block is composed of complex logic and selection elements that provide high precision and flexibility. The phase accumulator is designed to divide the output frequency on a basic clock while the PLL phase detector is responsible for adjusting the division frequency by measuring the difference between provided reference signals.

To conclude, the SL23EP08SC-5HT is an excellent choice for frequency synthesis and clock distribution applications requiring both high performance and cost-sensitivity. It offers a wide range of features and benefits, including multiple clock sources, support for multiple frequency outputs, a 300MHz base frequency, and automated on-chip PLL algorithms. Its four-stage programmable frequency synthesizer operates using a PLL phase rotator, control logic, phase accumulator, and PLL phase detector, allowing users to adjust the division frequency within fine 1/16th frequency intervals if desired.

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