SKY85711-21

5 GHz WLAN Front-End Module

Please note: SKY85711-21 is being discontinued and is not recommended for new designs. The suggested replacement is sky85712-21

The SKY85711-21 is a highly integrated, 5 GHz front-end module (FEM) incorporating a 5 GHz single-pole, doublethrow (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.

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

The device is provided in a compact, 16-pin 2.5 x 2.5 mm Quad Flat No-Lead (QFN) package.

Product Summary

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Specifications

Product LifecycleLast Time Buy

Frequency (GHz) Min.5.15

Replacement Part sky85712-21

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)20 (3% EVM)

Typ. Current @ V_CC = 5 V (mA)275 (11AC, 19dBm)

802.11 WLAN Standardac

Antenna Ports1

Architecture5 GHz WLAN Front-end Module

Typ. P_OUT @ 2.5% EVM (dBm)

Typ. Tx Gain (dB)27

Typ. P_OUT (dBm)

V_DD (V)

V_CC (V)5

PackageQFN, 16-pin

Package (mm)2.5 X 2.5 X 0.45

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: 27 dB
Receive gain: 12 dB
Output power: +19 dBm @ 1.8% EVM, HT80, MCS9, 5 V
Output power: +20 dBm @ 3% EVM, HT40, MCS7, 5 V
Small, QFN (16-pin, 2.5 x 2.5 mm) package (MSL3, 260°C per JEDEC J-STD-020)

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