SI5342A-B03366-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5342A-B03366-GMR is a jitter attenuator and clock multiplier from the Si5342 family, featuring four inputs and two 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 achieves ultra-low jitter of 90 fs rms and operates on core voltages of 1.8 V (VDD) and 3.3 V (VDDA). It includes programmable jitter attenuation bandwidths from 0.1 Hz to 4 kHz and supports integer and fractional synthesis modes.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using fourth-generation DSPLL and MultiSynth technologies.
• Supports hitless input clock switching with automatic or manual selection capabilities.
• Features digitally programmable jitter attenuation bandwidth for optimized performance.
• Includes in-circuit programmable non-volatile memory for known power-up 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 compliant systems
• Carrier Ethernet switches

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm tape and reel packaging status. Ensure the factory preprogrammed configuration matches the required application parameters before deployment. Cross-reference the RoHS compliance details with the latest datasheet revision.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when two high-performance differential or single-ended outputs are required from multiple input sources. The Si5342 variant is suitable for applications needing glitchless frequency changes and holdover modes. Verify that the 44-QFN package dimensions fit the PCB layout constraints.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5345/44/42 Rev D family of jitter attenuators. The Si5342 specifically provides four inputs and two outputs, distinguishing it from the four-output Si5344 and ten-output Si5345 models. All variants share the same underlying DSPLL technology and feature set.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Si5342A-D-GMR is the standard commercial version of this device family member.

Clock Generators, PLLs, Frequency Synthesizers FAQ

What is the maximum output frequency for differential signals?

The maximum output frequency for differential signals is 1028 MHz.

Does the device support locking to gapped input clocks?

Yes, the DSPLL supports locking to gapped input clocks with a minimum frequency of 10 MHz and up to two missing cycles out of every eight.

How is the loop filter implemented?

The loop filter is fully integrated on-chip, eliminating the need for discrete components and reducing noise coupling risks.