RFFM8850P Datasheet, PDF (10/10 Pages) RF Micro Devices – Dualband 2.4GHz and 5.0GHz 802.11b/g/n/a/ac Wi-Fi® Switch + LNA Front End Module

RFFM8850P
Pin Names and Descriptions
Pin
Name
Description
1
VTX5
5 GHz TX switch control voltage. Refer to logic table for proper settings
2
VRX5
5 GHz RX switch control voltage. Refer to logic table for proper settings
3
RX5
RF output port for the 5 GHz LNA. This port is matched to 50Ω and DC blocked internally
4
LNA_EN5 5 GHz LNA enable voltage. Refer to logic table for proper settings
5
VDD5
Supply voltage for the 5 GHz LNA. See applications schematic for biasing and bypassing components.
6
TX5
RF input port for the TX throw of the 5 GHz T/R switch. An external DC block is required
7
TX2
RF input port for the TX throw of the 2.4 GHz T/R switch. An external DC block is required
8
RX2
RF output port for the 2.4 GHz LNA. This port is matched to 50Ω and DC blocked internally
9
LNA_EN2 2.4 GHz LNA enable voltage. Refer to logic table for proper settings
10
VDD2
Supply voltage for the 2.4 GHz LNA. See applications schematic for biasing and bypassing components.
11
BT
RF bidirectional port for Bluetooth®. Input is matched to 50Ω. An external DC block is required
12
VBT
Bluetooth® switch control pin. See truth table for proper level.
13
ANT2
2.4 GHz RF bidirectional antenna port matched to 50Ω. An external DC block is required.
14
VTX2
2.4 GHz TX switch control voltage. Refer to logic table for proper settings
15
NC
This pin is not connected internally and can be left floating or connected to ground.
16
Pkg Base
ANT5
GND
5 GHz RF bidirectional antenna port matched to 50Ω. An external DC block is required.
Ground connection. The backside of the package should be connected to the ground plane through a short path,
i.e., PCB vias under the device are recommended.
*Note If PIN 11 (BT) is not used then that port should be left open.
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421
For sales or technical support, contact RFMD at +1.336.678.5570 or [e-mail].
DS150107
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.
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