SI5344A-B03290-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5344A-B03290-GMR is a jitter attenuator and clock multiplier from the Si5344 family, featuring four inputs and four outputs in a 44-QFN package. It 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. The device utilizes fourth-generation DSPLL technology to achieve ultra-low jitter of 90 fs rms. It operates on a core voltage of 1.8 V ±5% and an analog supply of 3.3 V ±5%, with independent output supplies configurable for 3.3 V, 2.5 V, or 1.8 V.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using integer and fractional synthesis modes.
• Features programmable jitter attenuation bandwidth ranging from 0.1 Hz to 4 kHz for optimized performance.
• Supports hitless input clock switching between fractionally related clocks 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 through authorized distributors. Ensure compliance with RoHS-6 standards and check for moisture sensitivity level requirements during storage and handling.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when low jitter performance below 100 fs rms is required for high-speed digital interfaces. Ensure the application supports the 44-QFN 7x7 mm footprint and provides appropriate thermal management. Verify that the serial interface configuration matches the system control architecture and that external crystal specifications align with the internal oscillator requirements.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5344 family within the broader Si5345/44/42 series of jitter attenuators. It shares the same Rev D datasheet specifications as the Si5345 and Si5342 variants but is distinguished by its four-output configuration compared to the ten outputs of the Si5345 and two outputs of the Si5342.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include other Si5344A variants with different factory preprogrammed configurations, such as SI5344A-Dxxxxx-GMR. Cross-family substitution with Si5345 or Si5342 requires pinout compatibility verification and software reconfiguration via ClockBuilder Pro.