SKY85742-11

5 GHz, 802.11n/ac Front-End Module

The SKY85742-11 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 802.11n/ac applications and systems.

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

The device is provided in a compact, 16-pin, 2.3 x 2.3 x 0.33 mm Quad Flat No-Lead (QFN) package.

Product Summary
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Specifications

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 Standardn/ac
Antenna Ports1
Architecture5 GHz WLAN Front-End Module
Typ. POUT @ 2.5% EVM (dBm)
Typ. Tx Gain (dB)29
Typ. POUT (dBm)
VDD (V)
VCC (V)3.0-4.40
PackageQFN, 16-pin
Package (mm)2.3 x 2.3 x 0.33

Features

  • Fully matched, with integrated 5 GHz PA, LNA with bypass mode, and SPDT switch
  • Integrated, positive slope logarithmic power detector. Detector output reverts to high impedance when not in use.
  • Transmit gain: 29 dB
  • Receive gain: 13 dB
  • Output power: +18.5 dBm, MCS7, HT20
  • Output power: +17.5 dBm, MCS9, VHT80
  • Small QFN (16-pin, 2.3 x 2.3 x 0.33 mm) package (MSL1, 260 °C per JEDEC J-STD-020)

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