SKY85720-11

5 GHz, 802.11n/ac Front-End Module

The SKY85720-11 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.

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Specifications

Product LifecycleIn Production

Frequency (GHz) Min.5.15

Frequency (GHz) Max.5.95

Typ. Current @ V_DD = 3.3 V 17.5dBm (mA)

Typ. Current @ V_DD = 3.6 V 17.5dBm (mA)

Typ. Current @ V_CC = 3.6 V (mA)200 @
17.5 dBm
@ Vcc = 3.7V

Typ. P_OUT @ 3.0% EVM (dBm)19 @
-30 dB EVM

Typ. Current @ V_CC = 5 V (mA)

802.11 WLAN Standardn/ac

Antenna Ports1

Architecture5 GHz Front-End Module

Typ. P_OUT @ 2.5% EVM (dBm)TBD

Typ. Tx Gain (dB)28

Typ. P_OUT (dBm)

V_DD (V)

V_CC (V)TBD

PackageQFN, 16-pin

Package (mm)2.3 x 2.3 x 0.33

Features

Fully matched, with integrated 5 GHz PA with harmonic, 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: 30 dB
Receive gain: 12 dB
Output power: +19 dBm, MCS7, HT20
Output power: +18 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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