SI5348B-D09507-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5348B-D09507-GMR is a network synchronizer and jitter attenuator from the Si5348 family, manufactured by Skyworks Solutions Inc. It integrates three independent DSPLLs within a single monolithic IC to support flexible SyncE, IEEE 1588, and SETS architectures. The device features ultra-low jitter of 100 fs typ (12 kHz to 20 MHz) and supports input frequencies up to 750 MHz for differential clocks. Output frequencies range from 1 PPS to 718.5 MHz for differential outputs and up to 250 MHz for LVCMOS. It operates on a core voltage of 1.8 V ±5% and an analog supply of 3.3 V ±5%, housed in a 64-lead 9x9 QFN package with an operating temperature range of –40 to +85 °C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Three independent DSPLLs supporting flexible SyncE/IEEE 1588 and SETS architectures
• Ultra-low jitter performance of 100 fs typ (12 kHz to 20 MHz)
• Digitally controlled oscillator (DCO) mode with precise timing adjustment for 1588 clock steering
• Programmable jitter attenuation bandwidth per DSPLL ranging from 0.001 Hz to 4 kHz

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 factory pre-programmed configuration details. Ensure compatibility with the required serial interface protocol (I2C or SPI) and check for moisture sensitivity handling requirements during storage and assembly.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when designing systems requiring strict adherence to telecom synchronization standards such as SyncE and IEEE 1588. Consider the availability of the DCO feature for precise phase alignment in packet-based networks. Evaluate the power consumption profile against system thermal constraints given the 1.8V and 3.3V supply requirements.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5348 Rev D series, which combines industry-leading small footprint with low power consumption. It serves as a critical component for wireless backhaul, IP radio, and data center switch applications requiring both traditional and packet-based network synchronization capabilities.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.