SI5350A-B04466-GT

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5350A-B04466-GT is a factory-programmed, user-definable custom clock generator designed to replace discrete crystals and oscillators. It utilizes a PLL and high-resolution fractional divider MultiSynth architecture to generate up to three non-integer-related frequencies ranging from 2.5 kHz to 200 MHz with 0 ppm error. The device operates on a fixed-frequency crystal reference of 25 or 27 MHz and features glitchless frequency changes, configurable spread spectrum, and low output period jitter typically below 70 ps pp. It supports independent core and output supply voltages of 1.8 V, 2.5 V, or 3.3 V.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates multiple independent, non-integer-related clock frequencies from a single crystal reference.
• Provides exact frequency synthesis at each output with zero parts-per-million error.
• Supports glitchless frequency transitions and configurable spread spectrum for EMI reduction.
• Features programmable control pins for power down, output enable, and frequency selection.

Clock Generators, PLLs, Frequency Synthesizers Applications

• HDTV, DVD/Blu-ray, and set-top box systems
• Audio/video equipment and gaming consoles
• Printers, scanners, and projectors
• Handheld instrumentation and residential gateways
• Networking, communication, servers, and storage devices

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific factory-programmed configuration associated with the B04466 suffix using ClockBuilder Pro software. Confirm that the 10-MSOP package meets the required pin count and footprint constraints. Ensure the external crystal matches the 25 MHz or 27 MHz reference specifications defined in the datasheet electrical characteristics.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a cost-sensitive application requires replacing multiple discrete oscillators with a single flexible solution. The 10-MSOP package provides three outputs suitable for designs with moderate clock distribution needs. Verify that the required output frequencies fall within the 2.5 kHz to 200 MHz range and that the jitter performance meets the system timing requirements.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5350A family of CMOS clock generators manufactured by Skyworks Solutions. It is distinguished by its pin-controlled operation and factory pre-programming capabilities. The -GT suffix indicates the 10-MSOP package variant, which offers three clock outputs compared to the four-output 16-QFN or eight-output 20-QFN versions.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include other Si5350A variants with different package types such as SI5350A-Bxxxxx-GM1 (16-QFN) or SI5350A-Bxxxxx-GM (20-QFN), provided the output count and pinout compatibility are verified. Cross-family alternatives like the Si5351 series require I2C programming and are not direct pin-compatible substitutes without firmware changes.

Clock Generators, PLLs, Frequency Synthesizers FAQ

Can the Si5350A generate frequencies above 112.5 MHz simultaneously?

Yes, but only two unique frequencies above 112.5 MHz can be output simultaneously. Multiple copies of the same high frequency can be distributed across different outputs.

Is the Si5350A compatible with HCSL swing levels?

Yes, the Si5350A can be configured to support HCSL compatible swing when the corresponding output VDDO is set to 2.5 V and appropriate termination resistors are used.

How is the device configured if it does not use I2C?

The Si5350A is configured via dedicated programmable control pins (P0-P4) rather than an I2C interface. These pins can be assigned functions such as Spread Spectrum Enable, Power Down, and Frequency Select.