1 of 10

Optimum Technology Matching® Applied

GaAs HBT

InGaP HBT

GaAs MESFET

SiGe BiCMOS

Si BiCMOS

SiGe HBT

GaAs pHEMT

Si CMOS

Si BJT

GaN HEMT

Functional Block Diagram

RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trade-

mark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademarks are the property of their respective owners. ©2006, RF Micro Devices, Inc.

Product Description

7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical

support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.

Ordering Information

10

11

12

6

5

4

3

2

1

7

8

9

TX_in

GND

GND

LNA_EN

RX_Out

Vdd

GND

BT

C_BT

ANT

C_RX

C_TX

RF5611

3.3V, SWITCH AND LNA FRONT END SOLUTION

The RF5611 is designed specifically for high-performance WiFi applica-

tions in the 2.4GHz to 2.5GHz ISM band, including Personal Media Play-

ers (PMPs), digital cameras, and WiFi enabled handsets. The RF5611

integrates the LNA with bypass and the SP3T switch of a Front-End solu-

and DC blocking capacitors on all RF Ports reduce the number of external

components, keeping cost down and utilizing minimum layout area for

implementation. The RF5611 is provided in a 2mmx2mmx0.5mm, 12-

pin QFN package. This LNA + Switch front-end solution meets or exceeds

the specification requirements of IEEE 802.11 b/g/n WiFi RF systems.

Features



Single Supply Voltage 3.0V to

4.5V



Integrated SP3T Switch and

LNA With Bypass



Typical gain is 12dB and

1.7dB NF in RX Mode Pin-to-

Pin



SP3T Switch Control Voltage

is 2.1V to 4.5V (3.0V Typical)

Applications



IEEE802.11b/g/n WiFi Appli-

cations



Portable Battery-Powered

Equipment



Combination Devices

RF5611

Standard 25 piece bag

RF5611SR

Standard 100 piece reel

RF5611TR7

Standard 2500 piece reel

RF5611PCK-410

Fully Assembled Evaluation Board

DS110619



Package Style: QFN, 12-pin, 2mmx2mmx0.5mm