SI5351C-B04198-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5351C-B04198-GMR is an I2C-programmable CMOS clock generator from Skyworks Solutions, designed to replace crystals, oscillators, and PLLs. It features a VCXO architecture synchronized to an external reference clock (CLKIN) ranging from 10 to 100 MHz. The device generates up to eight non-integer-related LVCMOS frequencies between 2.5 kHz and 200 MHz with 0 ppm error. It operates on core supply voltages of 2.5 V or 3.3 V and output supply voltages of 1.8 V, 2.5 V, or 3.3 V. Key electrical parameters include a typical period jitter of less than 70 ps peak-to-peak and a maximum operating temperature of +85 °C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Supports synchronization to an external reference clock input for precise frequency generation.
• Integrates a highly linear Voltage-Controlled Crystal Oscillator (VCXO) for flexible tuning applications.
• Provides glitchless frequency changes and configurable spread spectrum modulation at each output.

Clock Generators, PLLs, Frequency Synthesizers Applications

• Replacing custom pullable crystals in cost-sensitive designs
• Synchronous clock generation for networking and communication equipment
• Clock synthesis for servers and storage systems

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific factory preprogrammed configuration associated with the suffix '04198' against project requirements using ClockBuilder Pro software. Confirm that the external reference clock source meets the 10–100 MHz input specifications required for the Si5351C variant.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when an external reference clock is available and VCXO functionality is required. Ensure the design supports the 20-QFN package footprint and provides independent voltage supplies for the core and output buffers to accommodate level translation needs.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5351 family, which includes variants A, B, and C. The Si5351C specifically distinguishes itself by supporting an external CLKIN reference, whereas the Si5351A relies solely on an internal oscillator and the Si5351B uses an internal VCXO without external clock synchronization.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct functional replacements within the same family include other Si5351C variants such as SI5351C-B-GM or SI5351C-Bxxxxx-GM. Verify that any substitute part matches the required package type and I2C address configuration.