RFFM8250 Datasheet, PDF (8/8 Pages) RF Micro Devices – 2.4GHz to 2.5GHz 802.11b/g/n/ac WiFi Switch + LNA Module

RFFM8250
Pin Names and Descriptions
Pin
1
2
3
4
5
6
7
8
9
10
Pkg Base
Name
VTX
TX
N/C
RX
LNAEN
VDD
BT
VBT
VRX
ANT
GND
Description
Transmit switch control pin. See switch truth table for proper level.
RF input port for the 802.11b/g/n PA. Input is matched to 50Ω. An external DC block is required.
No connect. This pin is not connected internally and can be left floating or connected to ground.
RF output port for the 802.11b/g/n LNA. Port is matched to 50Ω. This pin is DC blocked internally.
Control voltage for the LNA. When this pin is set to a LOW logic state, the bypass mode is enabled.
Supply voltage for the LNA. See applications schematic for biasing and bypassing components.
RF bidirectional port for Bluetooth®. Input is matched to 50Ω. An external DC block is required.
Bluetooth® switch control pin. See truth table for proper level.
Receive switch control pin. See switch truth table for proper level.
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.
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].
DS150128
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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