SI5345A-B04213-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345A-B04213-GM is a factory preprogrammed, low-jitter clock synthesizer and jitter attenuator manufactured by Skyworks Solutions. It features four inputs and ten outputs within a 64-QFN package. The device supports differential input frequencies from 8 kHz to 750 MHz and LVCMOS inputs up to 250 MHz. Output frequencies range from 100 Hz to 1028 MHz for differential signals and up to 250 MHz for LVCMOS. It operates on a core voltage of 1.8 V ±5% and I/O voltages of 3.3 V, 2.5 V, or 1.8 V. The operating temperature range is –40 °C to +85 °C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using fourth-generation DSPLL and MultiSynth technologies.
• Provides ultra-low jitter performance of 90 fs rms with digitally programmable jitter attenuation bandwidth.
• Supports hitless input clock switching, free-run modes, and holdover capabilities with automatic or manual selection.
• Features highly configurable outputs compatible with LVDS, LVPECL, LVCMOS, CML, and HCSL standards.

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 factory preprogrammed configuration associated with the suffix B04213 against the target design requirements before procurement. Confirm that the QFN-64 package dimensions align with the PCB land pattern specifications. Ensure the serial interface protocol matches the system controller capabilities. Validate power supply sequencing and decoupling requirements as detailed in the datasheet electrical specifications section.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when an application requires generating multiple distinct clock frequencies from a single reference source with minimal added jitter. The Si5345A variant supports fractional synthesis and high-frequency outputs up to 1028 MHz, distinguishing it from lower-speed variants. Consider the integrated loop filter and non-volatile memory features to simplify board layout and ensure reliable power-up states without external components.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5345 family of jitter attenuators and clock multipliers. The 'A' designation indicates support for integer and fractional synthesis modes with output frequencies up to 1028 MHz. The 'B04213' suffix denotes a unique factory preprogrammed configuration generated via ClockBuilder Pro software. The 'GM' suffix identifies the lead-free, RoHS-compliant 64-QFN package type.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct functional replacements include other Si5345A variants such as SI5345A-D-GM, though these require custom programming. Verify compatibility with existing firmware or configuration tools if replacing a preprogrammed unit with a blank device. Ensure the replacement maintains the same 64-QFN footprint and pinout to avoid PCB redesign.