SI5350C-B04731-GT

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5350C-B04731-GT is a factory-programmable CMOS clock generator utilizing a dual PLL and MultiSynth architecture. It supports pin-based configuration for crystal or external clock inputs, generating up to eight non-integer-related frequencies ranging from 2.5 kHz to 200 MHz with zero ppm error. The device operates on core and output supply voltages of 1.8 V, 2.5 V, or 3.3 V, consuming typical currents of 20 mA to 25 mA. It features low period jitter under 70 ps, configurable spread spectrum, and user-controllable pins for power down, frequency select, and output enable.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates free-running and synchronized clocks using a dual PLL and high-resolution fractional divider architecture.
• Supports glitchless frequency changes and static phase offset capabilities across outputs.
• Includes programmable control pins for direct hardware management of power states and signal routing.
• Offers configurable spread spectrum modulation to reduce electromagnetic interference.

Clock Generators, PLLs, Frequency Synthesizers Applications

• PCIE Gen 1 compliant systems
• HDTV, DVD/Blu-ray, and set-top boxes
• Networking and communication equipment
• Servers and storage arrays

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific factory programming parameters associated with the B04731 suffix against the official datasheet before integration. Confirm that the required package type matches the design constraints, as the Si5350C family includes multiple footprint options. Ensure the reference input requirements align with the selected crystal or external clock source specifications.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a fixed-frequency, factory-configured solution is preferred over I2C programmable alternatives. Verify that the pin-controlled interface meets the system's hardware control requirements. Check if the available output count and voltage levels satisfy the target application's timing distribution needs without requiring additional buffering.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5350C series, which distinguishes itself by supporting both crystal and external clock inputs via the CLKIN pin. Unlike the Si5350A or Si5350B variants, the C-series allows flexible reference selection. The GT suffix indicates surface-mount packaging, typically MSOP-10 for three-output configurations within this family.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include other Si5350C variants with different output counts or package types, such as SI5350C-Bxxxxx-GM for QFN packages. Cross-family substitution with Si5351 requires I2C reprogramming, while Si5350A/B variants lack CLKIN support.