SKY85712-21

5 GHz WLAN Front-end Module

The SKY85712-21 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.

The LNA and PA disable functions ensure low leakage current in off mode. An integrated power detector is included to provide closed-loop power control within the system.

The device is provided in a compact, 16-pin 3 x 3 mm Quad Flat No-Lead (QFN) package.
Read More...

Features

    • Integrated high-performance 5 GHz PA, LNA with bypass, and T/R switch
    • Fully-matched input and output
    • Integrated power detector and directional coupler
    • Transmit gain: 27 dB
    • Receive gain: 12 dB
    • Output power: +19 dBm @ 1.8% EVM, HT80, MCS9, 5 V/4.2 V
    • Output power: +20 dBm @ 3% EVM, HT40, MCS7, 5 V/4.2 V
    • Small, QFN (16-pin, 3 x 3 mm) package (MSL3, 260 °C per JEDEC J-STD-020

Images & Diagrams

Specifications

    • Frequency (GHz) Min.
    • 5.15
    • Frequency (GHz) Max.
    • 5.85
    • 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)
    • 20 (3% EVM)
    • Typ. Current @ VCC = 5 V (mA)
    • 275 (11ac,19dBm)
    • 802.11 WLAN Standard
    • ac
    • Antenna Ports
    • 1
    • Architecture
    • 5 GHz WLAN Front-End Module
    • Typ. POUT @ 2.5% EVM (dBm)
    • 17 (@ 1.8% EVM)
    • Typ. Current @ VCC = 3.3 V (mA)
    • Typ. Tx Gain (dB)
    • 27
    • Typ. POUT (dBm)
    • VDD (V)
    • VCC (V)
    • 5
    • Package
    • QFN, 16-pin
    • Package (mm)
    • 3.0 x 3.0 x 0.55