SI5348A-B05529-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5348A-B05529-GM is a network synchronizer clock featuring three independent DSPLLs in a 64-lead 9x9 QFN package. It supports input frequencies from 48 to 54 MHz (crystal), 5 to 250 MHz (REF), and 8 kHz to 750 MHz (diff). Output ranges extend to 718.5 MHz (differential) and 250 MHz (LVCMOS). The device delivers ultra-low jitter of 100 fs typ (12 kHz to 20 MHz) and operates on core voltages of 1.8 V and 3.3 V within a -40 to +85 °C temperature range.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Three independent DSPLLs supporting flexible SyncE, IEEE 1588, and SETS architectures
• Digitally controlled oscillator (DCO) mode with precise timing adjustment for PTP applications
• Programmable jitter attenuation bandwidth per DSPLL ranging from 0.001 Hz to 4 kHz
• Highly configurable output drivers including LVDS, LVPECL, LVCMOS, HCSL, and CML

Clock Generators, PLLs, Frequency Synthesizers Applications

• Synchronous Ethernet (SyncE) ITU-T G.8262 EEC Option 1 & 2
• Telecom Boundary Clock (T-BC) as defined by ITU-T G.8273.2
• IEEE 1588 (PTP) slave clock synchronization
• Stratum 3/3E, G.812, G.813 network synchronization

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type and temperature range. Ensure the custom part number sequence matches the required factory pre-programmed configuration. Confirm RoHS-6 compliance and Pb-free status for regulatory adherence.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model for applications requiring ultra-low jitter and flexible frequency synthesis. Verify that the required output formats (LVDS, LVPECL, etc.) are supported by the specific DSPLL assignments. Ensure the external reference source meets the accuracy requirements for free-run and holdover modes.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5348 family of network synchronizers. The 'A' grade indicates support for output frequencies up to 718.5 MHz, distinguishing it from lower-grade variants. The 'GM' suffix denotes the 64-lead QFN package suitable for surface-mount assembly.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Si5348B-D-GM offers similar functionality but with a reduced maximum output frequency range of 350 MHz. Si5348A-D-GMR provides the same electrical performance in a tape-and-reel packaging format instead of the tray-packaged GM variant.