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

The SKY66405-11 is a high-performance, fully integrated RF front-end module (FEM) designed for Zigbee, Thread, and Bluetooth (including Low Energy) applications.

The SKY66405-11 is designed for ease of use and maximum flexibility. The device provides a power amplifier, low-noise amplifier, low-loss bypass path, transmit/receive switches, 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 SKY66405-11 to be used in battery powered applications over a wide spectrum of the battery discharge curve.

A functional block diagram is shown in Figure 1. The SKY66405-11 is provided in a small 1.9 mm x 1.9 mm x 0.56 mm Multi-Chip Module (MCM) package.

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RF Frequency (MHz)2400-2483.5
Rx Insertion Loss (dB) Typ.TBD
Rx Gain (dB) Typ.13.5
Rx NF (dB) Typ.2
Tx Gain (dB)10
Saturated Output Power (dBm) Typ. 13
Supply Voltage (V) 1.7-3.6
PackageMCM, 12L
Package (mm)1.9 x 1.9 x 0.56


  • Integrated PA with +13 dBm output power
  • Integrated LNA (2 dB noise figure typical) and bypass path
  • 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 (1.9 mm x 1.9 mm x 0.56 mm) package, NiPdAuplated (MSL3, 260 °C per JEDEC-J-STD-020)

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