SKY85791-11

5 GHz Wi-Fi 6 (802.11ax) Front-End Module with Integrated DPD Coupler

The SKY85791-11 is a highly integrated, 5 GHz front-end module (FEM) incorporating a single-pole, double-throw (SPDT) transmit/receive (T/R) switch, a low-noise amplifier (LNA) with bypass, and a power amplifier (PA) intended for 802.11ax applications and systems. The PA output includes a coupler to allow for digital pre-distortion (DPD) in applications. In DPD applications, the coupler is also used in place of the power detector.

An integrated logarithmic power detector is included to provide closed-loop power control within the system.

The device is provided in a compact, 16-pin, 3.0 x 3.0 mm Quad Flat No-Lead (QFN) package.
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Features

    • Integrated 802.11ax 5 GHz 1024 QAM, PA, LNA with bypass, and T/R switch
    • Fully-matched input and output
    • Integrated logarithmic power detector and directional coupler
    • Transmit gain: 32 dB
    • Receive gain: 16 dB
    • Output power:
      • MCS11, 17 dBm, -43 dB DEVM
      • MCS9, 22 dBm, -35 dB DEVM
    • Small QFN (16-pin, 3.0 x 3.0 mm) package (MSL3, 260 °C per JEDEC J-STD-020)

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Specifications

    • Frequency (GHz) Min.
    • 5.15
    • Frequency (GHz) Max.
    • 5.925
    • 802.11 WLAN Standard
    • ax
    • Antenna Ports
    • 1
    • Architecture
    • 5 GHz Wi-Fi 6 (802.11ax) Front-End Module with Integrated DPD Coupler
    • Package
    • QFN, 16-pin
    • Package (mm)
    • 3 x 3 x 0.85