SKY85303-11

RF Front End (LNA + PA) Overview

The SKY85303-11 is a complete 2.4 GHz RF front-end module designed for 802.11b/g/n WLAN applications, supporting up to 256 QAM modulation schemes. It integrates a fully matched power amplifier (PA), low-noise amplifier (LNA), and switch functionality within a compact 16-QFN package measuring 2.5 mm by 2.5 mm. The device operates on supply voltages of 3.3 V or 5 V and utilizes silicon technology. Key electrical parameters include an operating frequency of 2.4 GHz and a gain of 27 dB. This integrated solution simplifies design complexity for wireless connectivity modules.

RF Front End (LNA + PA) Feature Summary

• Integrates power amplifier, low-noise amplifier, and switching functions into a single module
• Supports high-order 256 QAM modulation for enhanced data throughput in WLAN applications
• Features a compact 16-QFN footprint suitable for space-constrained portable devices

RF Front End (LNA + PA) Applications

• 802.11b/g/n Wireless LAN (WLAN) connectivity modules
• Bluetooth-enabled wireless communication devices
• Portable consumer electronics requiring integrated RF front-ends

RF Front End (LNA + PA) Procurement Notes

Verify component status carefully as the SKY85303-11 is classified as obsolete and no longer manufactured by Skyworks Solutions Inc. Sourcing should focus on available stock from authorized distributors or secondary markets. Ensure that any acquired units are genuine and have not exceeded shelf-life limits. Cross-reference with current active alternatives like the SKY85303-21 if long-term production stability is required for new designs.

RF Front End (LNA + PA) Selection Notes

Select this component only for legacy system maintenance or specific existing designs utilizing the SKY85303 series. Due to its obsolete status, it is unsuitable for new product development where long-term supply assurance is critical. Engineers should evaluate the SKY85303-21 as a direct functional replacement for new implementations to ensure ongoing manufacturing support and availability.

RF Front End (LNA + PA) Part Context

The SKY85303-11 belongs to the SKY85303 family of RF front-end modules developed by Skyworks Solutions Inc. This series targets 2.4 GHz wireless applications, combining PA, LNA, and switch capabilities to reduce board space and component count. The -11 suffix typically denotes specific configuration variants within this family, often associated with earlier production cycles compared to subsequent models like the -21.

RF Front End (LNA + PA) Replacement Considerations

The SKY85303-21 is a confirmed substitute part number within the same product family. It offers similar functionality but represents a newer generation with potentially updated specifications or manufacturing processes. Verify pin compatibility and electrical performance alignment before transitioning designs from the obsolete SKY85303-11 to the SKY85303-21.