5 GHz, 802.11ac/n Low-Noise Amplifier

The SKY65981-11 is an ultra Low-Noise Amplifier (LNA) intended for 5 GHz, IEEE 802.11ac/n wireless receiver applications. Its industry-leading Noise Figure (NF), together with high linearity, make it ideal as a first-stage LNA in IEEE 802.11ac/n Wireless Local Area Network (WLAN) radios.

Operating with a single supply voltage, the SKY65981-11 consumes only 12 mA of current. The device includes a bypass mode for near field applications and to save power when the receiver is inactive.

The tiny package footprint of the SKY65981-11, requiring only four external components, enables the industry’s smallest PCB area needed to implement a fully-matched 5 GHz LNA.

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    • Ultra-low Noise Figure
    • 4.9 GHz to 5.9 GHz operation
    • Enable/disable/bypass modes
    • High IIP3
    • High gain
    • 2.8 V to 3.6 V single-supply operation
    • QFN (6-pin, 1.5 x 1.5 mm) package (MSL1, 260 °C per JEDEC J-STD-020)

Images & Diagrams


    • Frequency Range (GHz)
    • 5.15-5.85
    • Test Frequency (GHz)
    • 5.8
    • Gain Typ. (dB)
    • 13
    • OIP3 (dBm)
    • VDD (V)
    • 3.3
    • OP1 dB (dBm)
    • Supply Current Typ. (mA)
    • 12
    • Noise Figure Typ. (dB)
    • 1.5
    • Package
    • DFN, 6-pin
    • Package (mm)
    • 1.5 x 1.5 x 0.45

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