SI5380A-C-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The Si5380A-C-GM is a high-performance, integer-based jitter attenuator and clock multiplexer designed for small cell applications. It utilizes Silicon Laboratories’ 4th generation DSPLL technology to combine frequency synthesis and jitter attenuation in a single digital solution. The device features four inputs and twelve outputs within a 64-lead QFN package. It supports differential input frequencies from 11.52 MHz to 737.28 MHz and LVCMOS inputs up to 245.76 MHz. Output frequencies range from 480 kHz to 1.47456 GHz differentially. Key electrical specifications include an ultra-low jitter of 65 fs (typical) and a phase noise floor of -159 dBc/Hz. Operating temperatures span from -40°C to +85°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• DSPLL technology eliminates the need for external VCXO and analog loop filter components.
• Supports JESD204B clocking requirements including DCLK and SYSREF generation.
• Provides hitless switching capabilities between frequency-locked input clocks.
• Includes status monitoring for Loss of Signal (LOS), Out of Frame (OOF), and Loss of Lock (LOL).

Clock Generators, PLLs, Frequency Synthesizers Applications

• JESD204B clock generation
• Remote Radio Units (RRU) and Remote Access Networks (RAN)
• Wireless base stations (3G, GSM, W-CDMA, 4G/LTE, LTE-A)
• Data conversion sampling clocks for ADC, DAC, DDC, and DUC

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify component authenticity through authorized Skyworks distributors or direct channels. Confirm RoHS-6 compliance and Pb-free status prior to integration. Check for specific factory pre-programmed configuration requirements if standard settings are insufficient. Ensure proper handling procedures are followed due to moisture sensitivity classification. Validate that the design accounts for the 'Not Recommended for New Designs' status indicated in official documentation.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when ultra-low phase noise and high integration are required for wireless infrastructure. Ensure the application benefits from the elimination of external analog loop filters and VCXOs. Verify that the input frequency ranges match the system reference clocks. Consider the 64-QFN package constraints for PCB layout. Evaluate the need for specific holdover or free-run modes based on system stability requirements.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The Si5380A-C-GM belongs to the Si538x family of clock generators developed by Skyworks Solutions. This series leverages advanced DSPLL technology to provide superior performance immune to board disturbances. The device is part of a broader portfolio aimed at meeting the stringent phase noise and jitter requirements of modern wireless communication standards.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided datasheet. Designers should consult Skyworks technical support for current alternatives or updated product recommendations given the 'Not Recommended for New Designs' status.