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


Product LifecycleIn Production
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
PackageMCM, 22-pin
Package (mm)3.5 x 3.0 x 0.82


  • 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)

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