SI5380A-D11633-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5380A-D11633-GM is a clock multiplier and jitter attenuator IC manufactured by Skyworks Solutions Inc. It features a 64-VFQFN exposed pad package with dimensions of 9x9 mm. The device supports a maximum frequency of 1.47 GHz and operates within a temperature range of -40°C to 85°C. Supply voltages are specified as 1.71V to 1.89V for the core and 3.14V to 3.47V for auxiliary rails. It provides differential inputs and outputs, utilizing a PLL architecture with a 5:12 input-to-output ratio.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrates digital frequency synthesis and jitter attenuation using DSPLL technology, eliminating the need for external VCXO and analog loop filter components.
• Supports JESD204B clocking requirements including DCLK and SYSREF generation with configurable hitless and glitchless input switching capabilities.
• Provides status monitoring for loss of signal (LOS), out-of-frequency (OOF), and loss of lock (LOL) conditions via dedicated pins and registers.

Clock Generators, PLLs, Frequency Synthesizers Applications

• JESD204B clock generation
• Remote Radio Units (RRU) and Remote Access Networks (RAN)
• Wireless base stations supporting 3G, GSM, W-CDMA, 4G/LTE, and LTE-A standards

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific ordering suffix matches the required configuration. Check for RoHS compliance documentation. Ensure storage conditions adhere to moisture sensitivity level ratings. Validate that the part number corresponds to the exact revision required for your design.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Evaluate the input frequency range compatibility with your reference clock source. Consider the output format requirements such as LVDS, LVPECL, or LVCMOS. Assess the phase noise and jitter performance against system specifications. Verify power supply voltage availability for both core and auxiliary domains. Review thermal management needs for the QFN package in the target enclosure.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5380 family of wireless jitter attenuating clock multipliers. It is designed for small cell applications demanding high integration and superior phase noise performance. The device utilizes fourth-generation DSPLL technology to combine frequency synthesis with jitter reduction in a single digital solution.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer's official obsolescence notices or cross-reference guides for potential alternatives if this part is no longer recommended for new designs.

Clock Generators, PLLs, Frequency Synthesizers FAQ

Does the SI5380A require external components for frequency stability?

No, the DSPLL technology eliminates the need for external VCXO and analog loop filter components. An external crystal is required on the XA/XB pins for the internal oscillator.

What input switching modes are supported?

The device supports manual selection, automatic switching based on priority, hitless switching for frequency-locked inputs, and glitchless switching for inputs with slight frequency differences.

How does the device handle input clock failure?

Upon input clock failure, the device can enter holdover mode using stored historical frequency data to maintain output stability, or switch to free-run mode if no valid inputs are available.