SI5351A-B01966-GTR

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SI5351A-B01966-GTR is a versatile, programmable clock generator that utilizes Silicon Labs’ proprietary MultiSynth fractional divider technology to generate accurate clock signals. It targets a wide variety of clock and timing applications, such as those in communications infrastructure, industrial automation, automotive, medical, portable and consumer electronics, and is ideal for clock tree designs that require up to 8 clock outputs. The SI5351A-B01966-GTR is a high-performance, ultra-low jitter clock generator that integrates 3 separate PLLs, 8 prescalers, 8 dividers, and 40 programmable outputs, allowing for flexible output configurations from a single reference clock.

Application Fields of SI5351A-B01966-GTR

The SI5351A-B01966-GTR is an ideal solution for any applications that require a clock generator. It is used in a variety of applications, including:

• Communications Infrastructure: Telecom, broadcast, mobile wireless, backhaul, and wireless access
• Industrial Automation: Building automation, industrial controllers and automation.
• Automotive: ADAS systems, infotainment, vehicle security, and access/power systems
• Medical: Dialysis, medical imaging, and medical instrumentation
• Portable and Consumer Electronics: Portable music players, headphones, and wearable devices

Working Principle of the SI5351A-B01966-GTR

At the heart of the SI5351A-B01966-GTR is a fractional-N frequency synthesizer that is used to generate frequency outputs from an input reference frequency. The 3 integrated PLLs are used to generate frequencies from the reference frequency, and each PLL can program the synthesizer to generate any output frequency between the reference and 600 MHz. In this manner, the SI5351A-B01966-GTR can be used to generate any number of output frequencies from a single reference frequency.

To generate the output frequency, the frequency synthesizer divides the reference frequency by an integer (N) and a fractional component (N/F). This becomes the output frequency of the PLL, and can then be divided down with one of the 8 prescalers or 8 dividers in order to generate the final output frequency. This approach allows for the generation of a wide range of frequencies from a single reference frequency.

The SI5351A-B01966-GTR also incorporates an integrated temperature compensation circuit which controls the output frequency, ensuring temperature stability over the entire operating range. It also includes a wide range of programmable features, such as output slew rate, power cycling, and clock gating.

Conclusion

The SI5351A-B01966-GTR is an ideal solution for any application that requires a clock generator. It combines the accuracy of a fractional-N frequency synthesizer with the flexibility of 8 prescalers and 8 dividers, allowing for a wide range of output frequencies from a single reference frequency. The integrated temperature compensation circuit and programmable features, such as output slew rate, power cycling, and clock gating, make it an ideal choice for any clock management solution.

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