SKY85742-11

RF Front End (LNA + PA) Overview

The SKY85742-11 is a highly integrated 5 GHz front-end module designed for mobile and portable 802.11n/ac WLAN applications. It incorporates a single-pole, double-throw (SPDT) transmit/receive switch, a low-noise amplifier with bypass, and a power amplifier. The device features an integrated logarithmic power detector providing 20 dB of dynamic range for closed-loop power control in high-power mode. It operates at a supply voltage of 3.6 V and delivers 30 dB gain. The component is housed in a compact 16-QFN package measuring 2.3x2.3 mm.

RF Front End (LNA + PA) Feature Summary

• Integrates SPDT T/R switch, LNA with bypass, and PA for complete RF front-end functionality
• Includes integrated logarithmic power detector enabling closed-loop power control
• Optimized for high performance in mobile and portable wireless devices

RF Front End (LNA + PA) Applications

• Mobile 802.11n WLAN systems
• Portable 802.11ac WLAN devices
• Wireless communication modules requiring integrated RF front-end solutions

RF Front End (LNA + PA) Procurement Notes

Verify the specific ordering suffix to ensure compatibility with required packaging options such as cut tape or reel. Confirm that the selected variant matches the intended application frequency and regulatory compliance standards. Cross-reference the manufacturer datasheet for detailed electrical characteristics and thermal requirements before finalizing procurement decisions.

RF Front End (LNA + PA) Selection Notes

Select this component for designs requiring a compact, highly integrated solution for 5 GHz WLAN operations. Ensure the system architecture supports the 3.6 V supply voltage and accommodates the 16-QFN footprint. Evaluate the need for the integrated power detector for precise power management in high-power transmission modes compared to discrete alternatives.

RF Front End (LNA + PA) Part Context

This part belongs to Skyworks' portfolio of integrated RF front-end modules tailored for wireless connectivity. It addresses the industry demand for miniaturization and performance efficiency in modern handheld devices. The module consolidates multiple RF functions into a single package, reducing board space and simplifying design complexity for OEMs developing next-generation WLAN products.

RF Front End (LNA + PA) Replacement Considerations

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