2.4 GHz Front-End Module for Zigbee®/Thread/Bluetooth® Applications

The SKY66404-11 is a high-performance, fully integrated RF front-end module (FEM) designed for Zigbee, Thread, and Bluetooth (including Low Energy) applications.

The SKY66404-11 is designed for ease of use and maximum flexibility. The device provides integrated inter-stage matching and harmonic filter, and digital controls compatible with 1.6 V to 3.6 V CMOS levels.

The RF blocks operate over a wide supply voltage range from 1.7 V to 3.6 V that allows the SKY66404-11 to be used in battery powered applications over a wide spectrum of the battery discharge curve.

Reference Designs
The SKY66404-11 FEM has been designed into reference designs with products from Dialog Semiconductor, Nordic Semiconductor, NXP, Texas Instruments and Silicon Labs. Combined with our partners’ platforms, the SKY66404-11 meets today’s demand for long-range, low-power and cost-effective solutions.

Dialog Semiconductor: DA1468x, DA1453x
Nordic Semiconductor: nRF51, nRF52
NXP: JN518x, KW20, KW40
Texas Instruments: CC264x, CC265x
Silicon Labs: EFR32, EM358x


    • Integrated PA with up to +17 dBm output power
    • Integrated LNA (2.5 dB noise figure typical) and bypass path
    • Integrated antenna diversity switching for all modes
    • Single-ended transmit/receive interface
    • Fast switch on/off time: < 800 ns
    • Supply range: 1.7 V to 3.6 V
    • Sleep mode current: < 1 μA typical
    • No external bias resistor is required
    • Small MCM (22-pin, 3.5 x 3.0 x 0.82 mm) package,
      NiPdAu-plated (MSL3, 260 °C per JEDEC-J-STD-020)

Images & Diagrams


    • RF Frequency (MHz)
    • 2400-2483.5
    • Rx Insertion Loss (dB) Typ.
    • TBD
    • Rx Gain (dB) Typ.
    • 11
    • Tx Gain (dB)
    • 10
    • Rx NF (dB) Typ.
    • 2.5
    • Saturated Output Power (dBm) Typ.
    • 17
    • Supply Voltage (V)
    • 1.7-3.6
    • Package
    • MCM, 22-pin
    • Package (mm)
    • 3.5 x 3.0 x 0.82