5 GHz, 802.11ac Front-End Module

The SKY85735-11 is a highly integrated, 5 GHz front-end module (FEM) incorporating a 5 GHz single-pole, double-throw (SPDT) transmit/receive (T/R) switch, a 5 GHz low-noise amplifier (LNA) with bypass, and a 5 GHz power amplifier (PA) intended for mobile/portable 802.11ac applications and systems.

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

The device is provided in a compact, 12-pin 2.0 x 2.0 x 0.6 mm Multi-Chip Module (MCM) package.


Product LifecycleIn Production
Frequency (GHz) Min.5.15
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)
Typ. POUT @ 3.0% EVM (dBm)
Typ. Current @ VCC = 5 V (mA)
802.11 WLAN Standardac
Antenna Ports
Architecture5 GHz Front-End Module
Typ. POUT @ 2.5% EVM (dBm)
Typ. Tx Gain (dB)32
Typ. POUT (dBm)
PackageMCM, 16-pin
Package (mm)2 x 2 x 0.6


  • Integrated high-performance 5 GHz PA, LNA with bypass, and SPDT
  • Fully matched input and output
  • Integrated, positive slope power detector
  • Transmit loopback mode
  • Transmit gain: 32 dB
  • Receive gain: 14 dB
  • Output power: +21 dBm, @3% (–30 dB) DEVM, MCS7, HT40
  • Output power: +20 dBm @ 1.8% (–35 dB) DEVM, MCS9, VHT80
  • Direct connection to battery with 5 V nominal supply voltage
  • Small MCM (12-pin, 2.0 x 2.0 x 0.6 mm) package (MSL3, 260 °C per JEDEC J-STD-020)

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