SI5345A-B05380-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345A-B05380-GM is a 10-channel, any-frequency, any-output jitter attenuator and clock multiplier from Skyworks Solutions. It utilizes fourth-generation DSPLL and MultiSynth technologies to generate output frequencies ranging from 100 Hz to 1028 MHz with differential outputs. The device supports integer and fractional synthesis modes and accepts input frequencies up to 750 MHz differentially or 250 MHz via LVCMOS. It features an integrated loop filter, in-circuit programmable non-volatile memory, and operates within a temperature range of -40°C to +85°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using integer and fractional synthesis.
• Provides ultra-low jitter performance of 90 fs rms for high-speed data applications.
• Supports hitless input clock switching between fractionally related inputs without phase offset propagation.
• Includes in-circuit programmable non-volatile memory to ensure known frequency configuration upon power-up.

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 against the manufacturer's current documentation to confirm factory preprogramming details. Confirm package availability and lead times directly with authorized distributors as stock levels fluctuate. Ensure compatibility with ClockBuilder Pro software versions for accurate configuration generation before finalizing procurement orders.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when requiring up to ten independent output clocks with varying frequencies derived from multiple input sources. The Si5345A variant specifically supports output frequencies up to 1028 MHz, distinguishing it from lower-frequency variants. Ensure the application requires both integer and fractional synthesis capabilities to utilize the full flexibility of the MultiSynth dividers.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5345 family of jitter attenuators, which also includes the Si5344 (4 outputs) and Si5342 (2 outputs). All share similar core technologies but differ in channel count and package size. The Si5345 is housed in a 64-QFN 9x9 mm package, providing the highest I/O density within the series for complex clocking architectures.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct functional replacements include other Si5345 variants such as SI5345B-D-GM or SI5345C-D-GM, depending on whether the higher frequency range of the 'A' suffix is required. Verify that the replacement part supports the necessary integer and fractional synthesis modes if those are critical to the design.