RF Micro Devices Inc.

7628 Thorndike Road, Greensboro, NC 27409-9421

DS131219

For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.

The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents or other rights of

third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended

application circuitry and specifications at any time without prior notice.

7 of 7

RFFM5541

PROPOSED

Pin Names and Descriptions

Pin

Name

Description

1

GND

Ground.

2

ANT

This is the common port (antenna). Matched to 50

Ω. External DC blocking capacitor required.

3

GND

Ground.

4

LNA_EN

LNA Enable/Bypass Enable control pin. See switch truth table for proper settings.

5

GND

Ground.

6

VDD

Supply voltage to the LNA.

7

NC

No Board Connection Allowed.

8

RX_OUT

Receive port for 802.11a/n band. RX output includes integrated DC-block and 50

Ω match.

9

NC

No Board Connection Allowed.

10

GND

Ground.

11

TX_IN

Transmit port for 802.11a/n band. Matched to 50

Ω. External DC blocking capacitor required.

12

C_TX/RX

Transmit and receive mode control pin. See switch truth table for proper settings.