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SKY85717-21

5 GHz, 802.11ac Front-End Module

The SKY85717-21 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 low-noise amplifier (LNA) with bypass, and a 5 GHz power amplifier (PA) intended for mobile/portable 802.11ac applications and systems.

An enable/disable function is included that allows power savings during off mode. An integrated power detector with 20 dB of dynamic range is included to provide closed-loop power control within the system.

The device is provided in a compact, 16-pin 2.5 x 2.5 x 0.4 mm Quad Flat No-Lead (QFN) package.

Features

    • Integrated high-performance 5 GHz PA, LNA with bypass, and SPDT
    • Fully matched input and output
    • Integrated, positive slope power detector
    • Transmit loopback mode
    • Transmit gain: 28 dB
    • Receive gain: 12 dB
    • Output power: +19.5 dBm, MCS7, HT40
    • Output power: +18.5 dBm @ 1.8% EVM, MCS9, HT80
    • High-linearity and high-efficiency modes
    • Direct connection to battery with 5 V nominal supply voltage
    • Small, QFN (16-pin, 2.5 x 2.5 x 0.4 mm) package (MSL1, 260 °C per JEDEC J-STD-020)

Images & Diagrams

Specifications

    • Frequency (GHz) Min.
    • Frequency (GHz) Max.
    • Typ. Current @ VDD = 3.3 V 17.5dBm (mA)
    • Typ. Current @ VDD = 3.6 V 17.5dBm (mA)
    • Typ. Current @ VCC = 3.6 V (mA)
    • Typ. POUT @ 3.0% EVM (dBm)
    • TBD
    • Typ. Current @ VCC = 5 V (mA)
    • TBD
    • 802.11 WLAN Standard
    • ac
    • Antenna Ports
    • 1
    • Architecture
    • 5 GHz WLAN Front-End Module
    • Typ. POUT @ 2.5% EVM (dBm)
    • TBD
    • Typ. Current @ VCC = 3.3 V (mA)
    • TBD
    • Typ. Tx Gain (dB)
    • TBD
    • Typ. POUT (dBm)
    • VDD (V)
    • VCC (V)
    • TBD
    • Package
    • QFN, 16-pin
    • Package (mm)
    • 2.5 x 2.5 x 0.4

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