5 GHz WLAN Front-end Module

The SKY85702-11 is a highly-integrated, 5 GHz Front-End Module (FEM) incorporating a 5 GHz Single-Pole, Double-Throw (SPDT) transmit/receive (T/R) switch, and a 5 GHz Power Amplifier (PA) intended for mobile/portable 802.11n/ac applications and systems. The device operates from a single supply voltage of 3.6 V.

An enable/disable function is included that allows power savings during off mode. An integrated power detector with 20 dB of dynamic range is included to provide closed-loop power control within the system.

Please note: SKY85702-11 is being discontinued and is not recommended for new designs. The suggested replacement is SKY85709-11 .


Frequency (GHz) Min.4.9
Replacement Part SKY85709-11
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)250 (@ 19dBm)
Typ. POUT @ 3.0% EVM (dBm)18 (802.11n)
16 (1.8% EVM, 11ac)
Typ. Current @ VCC = 5 V (mA)
802.11 WLAN Standardn/ac
Antenna Ports1
Architecture5 GHz Front End Module
Typ. POUT @ 2.5% EVM (dBm)
Typ. Tx Gain (dB)28
Typ. POUT (dBm)
VCC (V)3.0-4.2
PackageQFN, 16-pin
Package (mm)2.5 x 2.5 x 0.45


  • Integrated high performance 5 GHz PA with harmonic filter and SPDT
  • Fully-matched input and output
  • Integrated, positive slope power detector
  • Transmit gain: 28 dB
  • Output power: +19 dBm @ 3% EVM, 64 QAM 54 Mbps
  • Output power: +18 dBm @ 3% EVM, MCS7 HT40
  • Output power: +16 dBm @ 1.8% EVM, MCS9 HT80
  • Direct connection to battery with 3.6 V nominal supply voltage
  • Small, QFN (16-pin, 2.5 x 2.5 mm) package (MSL1, 260 °C per JEDEC J-STD-020)

Product Documents