SI5345A-B03273-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5345A-B03273-GM is a factory preprogrammed, low-jitter clock synthesizer and jitter attenuator belonging to the Si5345 family. It features four inputs and ten outputs housed in a 64-QFN package. The device supports any-frequency generation with an output range up to 1028 MHz using integer and fractional synthesis modes. Key electrical parameters include a core voltage of 1.8 V ±5% and a supply voltage of 3.3 V ±5%. It operates within a temperature range of –40 °C to +85 °C and integrates non-volatile memory for configuration retention.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Combines fourth-generation DSPLL and MultiSynth technologies for ultra-low jitter performance.
• Supports hitless input clock switching between fractionally related sources.
• Includes programmable jitter attenuation bandwidth and fastlock feature for rapid lock acquisition.
• Features in-circuit programmable non-volatile memory ensuring known power-up frequency configurations.

Clock Generators, PLLs, Frequency Synthesizers Applications

• OTN muxponders and transponders
• 10/40/100 G networking line cards
• GbE/10 GbE/100 GbE Synchronous Ethernet (ITU-T G.8262)
• Carrier Ethernet switches
• SONET/SDH line cards

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix B03273 corresponds to the required factory preprogrammed configuration. Confirm that the device meets RoHS-6 compliance requirements. Ensure the application design accounts for the specified operating temperature range and voltage tolerances. Check for availability status as custom preprogrammed parts may have limited stock or longer lead times compared to blank devices.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this part when high channel count (10 outputs) and wide frequency range (up to 1028 MHz) are required. The 'A' designation indicates support for both integer and fractional synthesis modes. Verify compatibility with LVDS, LVPECL, LVCMOS, CML, and HCSL output standards. Use ClockBuilder Pro software to generate the necessary configuration data for the preprogrammed NVM.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component is part of the Si5345/44/42 Rev D family from Skyworks Solutions. The Si5345 variant specifically provides four inputs and ten outputs in a 9x9 mm 64-QFN package. It utilizes MultiSynth and DSPLL technologies to deliver jitter attenuation and clock multiplication capabilities for demanding synchronization applications.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include other Si5345A-D-GM variants with different preprogrammed sequences. Blank devices like SI5345A-D-GM can be used if in-circuit programming capability is available. Ensure the replacement maintains the same output frequency range and package dimensions.