Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

200557 Rev. B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 14, 2007

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SKY65228-11: WLAN 802.11n Single Band 4.9–5.85 GHz

MIMO Intera™ Front-End Module

DATA SHEET

Features

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Single band 4.9–5.85 GHz MIMO architecture

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Two full 4.9–5.85 GHz transmit/receive chains

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Backward-compatible with 802.11a standards

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Pin compatible with SKY65225-11 (4.9–5.85 GHz)

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Gain matching: <2 dB

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Internal voltage regulation

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Single 3.0–3.6 V power supply

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Temperature-compensated PA bias networks

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Separate digital controls for each PA

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Temperature-compensated directional power detection

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Package size: 10 x 14 x 0.9 mm

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Lead (Pb)-free and RoHS-compliant MSL-3 @ 250 °C

per JEDEC J-STD-020

Description

The SKY65228-11 Intera nFEM contains two complete

4.9–5.85 GHz transmit/receive chains in one compact RF front-end

module optimized for single band 4.9–5.85 GHz MIMO (multiple

in—multiple out) operation, in compliance with the 802.11n draft

standard. The SKY65228-11 includes two 4.9–5.85 GHz PAs with

integrated input filtering for 3–4 GHz rejection, and temperature-

compensated, directional power detector with 20 dB dynamic

range. Also included are low loss, high rejection GaAs harmonic

filters and T/R switches which provide high linearity in all transmit

paths and low loss in all receive paths.

The SKY65228-11 Intera nFEM achieves outstanding gain

matching which is a critical requirement for MIMO operation.

This is accomplished though mirrored layout symmetry.

The SKY65228-11 is packaged in a lead (Pb)-free, RoHS-compliant

laminate package, which measures 10 x 14 x 0.9 mm. This

FEM is designed as a pin to pin compatible version of the

SKY65225-11 for 4.9–5.85 GHz only.

Skyworks offers lead (Pb)-free, RoHS (Restriction of

Hazardous Substances)-compliant packaging.

NEW

Functional Block Diagram

A0

A1

R0a

R1a

T0a

PD0a

PD1a

PU0a

PU1a

T1a

PA

Controller

Dir

Det

4.9–5.85 GHz

4.9–5.85 GHz

Dir

Det

Innovation to Go

TM

Now available for purchase online.

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