SI5340A-B-GMR

Overview

The Skyworks SI5340A-B-GMR is a programmable clock generator from the Si5340 Rev D family, utilizing MultiSynth technology for any-frequency synthesis. It features four outputs capable of frequencies up to 712.5 MHz with zero ppm error. The device supports input frequencies up to 750 MHz and operates on a single supply voltage ranging from 1.71 V to 3.47 V. Key specifications include a maximum operating current of 120 mA and an integrated phase-locked loop (PLL) that eliminates external loop filter components. It is housed in a 44-pin QFN package.

Feature Summary

• MultiSynth Technology: Enables any-frequency output generation with 0 ppm frequency synthesis error across all outputs.
• Integrated PLL: Fully contained on-chip loop filter removes the need for discrete external components, reducing noise coupling risks.
• Flexible Input Options: Supports reference clocks via XA/XB pins (crystal or external), IN0, IN1, or IN2.
• In-Circuit Programmability: Features non-volatile memory (NVM) allowing power-up configuration and field reprogramming via I2C/SPI.

Applications

• High-performance networking equipment requiring precise clock distribution.
• Telecommunications infrastructure utilizing low-jitter signal generation.
• Data center servers and storage systems needing flexible frequency plans.
• Industrial control systems requiring reliable timing synchronization.

Procurement Notes

Verify the specific ordering suffix 'B' against official Skyworks documentation to confirm factory pre-programming status. Confirm package type is 44-pin QFN and ensure compatibility with I2C/SPI interface requirements. Check for moisture sensitivity levels and recommended soldering profiles during procurement validation.

Selection Notes

Select this model when four independent output clocks are required with ultra-low jitter performance. Ensure the application supports the 1.71 V to 3.47 V supply range. Use ClockBuilder Pro software for initial configuration and register map generation. Verify that the required output frequencies fall within the 100 Hz to 712.5 MHz range.

Part Context

The SI5340A-B-GMR belongs to the Si5340 Rev D family, distinguished by its four-output architecture compared to the ten-output Si5341. It shares the same core MultiSynth technology and functional block diagram but is optimized for applications requiring fewer outputs. The 'Rev D' designation indicates specific hardware revisions and feature sets documented in the family reference manual.

Replacement Considerations

Direct replacements within the same family include other Si5340 variants with different output counts or frequency ranges. Cross-family substitution with Si5341 requires accounting for the additional six outputs and potential pinout differences. Verify register compatibility and NVM programming procedures when substituting.