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SKY85728-11

5 GHz WLAN Front-End Module

The SKY85728-11 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 high-gain low-noise amplifier (LNA) with bypass, and a 5 GHz power amplifier (PA) intended for high-power 802.11ac applications and systems.

The LNA and PA disable functions ensure low leakage current in the off mode. An integrated power detector is included to provide closed-loop power control within the system.

The device is provided in a compact, 24-pin 3 x 5 mm Quad Flat No-Lead (QFN) package, which may reduce the front-end board space by more than 50 percent.

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Product Summary

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Specifications

Product LifecycleIn Production

Frequency (GHz) Min.5.15

Replacement Part sky85743-21

Frequency (GHz) Max.5.85

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)

Typ. P_OUT @ 3.0% EVM (dBm)23

Typ. Current @ V_CC = 5 V (mA)340

802.11 WLAN Standardac

Antenna Ports

Architecture5 GHz WLAN Front-End Module

Typ. P_OUT @ 2.5% EVM (dBm)

Typ. Tx Gain (dB)32

Typ. P_OUT (dBm)

V_DD (V)

V_CC (V)

PackageQFN, 24-pin

Package (mm)3 x 5 x 1.2

Features

Integrated high-performance 5 GHz PA, LNA with bypass, and T/R switch
Fully matched input and output
Integrated power detector and directional coupler
Transmit gain: 32 dB
Receive gain: > 15 dB
Output power: +22.5 dBm @ –35 dB DEVM, HT80, MCS9, 5 V
Output power: +23 dBm @ –30 dB DEVM, HT40, MCS7, 5 V
Small QFN (24-pin, 3 x 5 mm) package (MSL3, 260 °C per JEDEC J-STD-020)

Product Documents

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