SI5350A-B05242-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5350A-B05242-GMR is a factory-programmable CMOS clock generator manufactured by Skyworks Solutions. It utilizes a PLL and high-resolution fractional divider architecture to generate up to eight non-integer-related frequencies ranging from 2.5 kHz to 200 MHz with 0 ppm error. The device operates on a single supply voltage of 1.8 V, 2.5 V, or 3.3 V, consuming typically 25 mA at the core. It supports glitchless frequency changes, configurable spread spectrum, and static phase offsets. The component is housed in a 10-MSOP package providing three LVCMOS outputs.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates multiple independent output frequencies from a single crystal reference
• Supports glitchless frequency transitions and configurable spread spectrum for EMI reduction
• Features user-configurable control pins for power management and output enable functions
• Provides separate voltage supplies for core logic and output buffers to support level translation

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
• Residential gateways and networking communication devices
• Servers and storage systems

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific factory programming configuration associated with the B05242 suffix against the target system requirements using ClockBuilder Pro software. Confirm that the 10-MSOP package meets the board layout constraints and that the required output count aligns with the three available channels. Ensure the external crystal matches the 25 MHz or 27 MHz specification and load capacitance requirements defined in the datasheet.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a cost-sensitive application requires replacing multiple discrete crystals or oscillators with a single programmable source. It is suitable for designs needing exact frequency synthesis without integer multiples. Consider the 10-MSOP package if only three outputs are necessary. Verify that the input reference is limited to a fixed-frequency crystal, as this variant does not support VCXO or external clock inputs.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5350 family of factory-programmable clock generators. Unlike the I2C-configurable Si5351 series, the Si5350A relies on pin-based control and pre-programmed internal registers. The B05242 designation indicates a specific custom frequency plan created via Skyworks' ClockBuilder Pro tool, distinguishing it from blank or generic variants within the same package type.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include other Si5350A variants in the 10-MSOP package, such as SI5350A-Bxxxxx-GT or SI5350A-Bxxxxx-GM1, provided the frequency configuration is identical. Cross-family substitution with Si5351A-Bxxxxx-GT is possible but requires I2C interface implementation instead of pin control.