5 GHz High-Power WLAN Front-End Module

The SKY85747-11 is a highly integrated, 5 GHz front-end module (FEM) incorporating a 5 GHz single-pole, double-throw (SPDT) transmit/receive (T/R) switch, a 5 GHz high-gain low-noise amplifier (LNA) with bypass, and a 5 GHz power amplifier (PA) intended for high-power 802.11ax applications and systems.

The LNA and PA disable functions ensure low leakage current in the off mode. An integrated logarithmic power detector is included to provide closed-loop power control over 25 dB of dynamic range.

The device is provided in a compact, 24-pin 3 x 5 mm Land Grid Array (LGA) package, which may reduce the front-end board space by more than 50 percent.


    • Integrated high-performance 5 GHz PA, LNA with bypass, and T/R switch
    • Fully matched input and output
    • Integrated logarithmic power detector and directional coupler
    • Transmit gain: 32 dB typical
    • Receive gain: > 15 dB
    • Output power: +18.5 dBm typical, -43 dB DEVM, HT80, MCS11, 5 V
    • Integrated, temperature compensated log detector
    • Highly sensitive, jammer-tolerant LNA
    • Small LGA (24-pin, 3 x 5 mm) package (MSL4, 260°C per JEDEC J-STD-020)

Images & Diagrams


    • Frequency (GHz) Min.
    • 5.15
    • Frequency (GHz) Max.
    • 5.925
    • 802.11 WLAN Standard
    • ax
    • Antenna Ports
    • 1
    • Architecture
    • 5 GHz High-Power WLAN Front-End Module
    • Package
    • LGA, 24-pin
    • Package (mm)
    • 3 x 5 x 1.2

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