RFFM8502 Datasheet, PDF (8/8 Pages) RF Micro Devices – 4.9GHz to 5.85GHz 802.11a/n WiFi Front End Module

RFFM8502
Pin Names and Descriptions
Pin
Name
Description
1
NC*
No Connect. This pin is not connected internally and can be left floating or connected to ground.
2
RX
RF output port for the 802.11a/n LNA. This port is matched to 50Ω and DC blocked internally.
3
NC*
No Connect. This pin is not connected internally and can be left floating or connected to ground.
4
VCC
Supply voltage for the LNA and PA Regulator. See applications schematic for biasing and bypassing components.
5
PDET
Power detector voltage for the TX path. May need external series R/shunt C to adjust voltage level and to filter RF noise.
6
PA_EN
Control voltage for the PA and TX switch. See truth table for proper settings.
7
NC*
No Connect. This pin is not connected internally and can be left floating or connected to ground.
8
TX
RF input port for the 802.11a/n PA. Input is matched to 50Ω and DC blocked internally.
Vmode
High/Low power mode control signal. Vmode can be low or floating for nominal conditions (high power mode). Applying
9
2.8V or greater to this pin enables low power mode.
VCC
Supply voltage for the first and second stage of the PA. See applications schematic for biasing and bypassing
10
components.
11
VCC
Supply voltage for the final stage of the PA. See applications schematic for biasing and bypassing components.
12
NC*
No Connect. This pin is not connected internally and can be left floating or connected to ground.
13
ANT
RF bidirectional antenna port matched to 50Ω. An external DC block is required.
14
NC*
Not internally connected. This pin can be left floating or grounded.
15
C_RX
Receive switch control pin. See switch truth table for proper level.
16
LNA_EN Control voltage for the LNA. When this pin is set to a LOW logic state, the bypass mode is enabled.
Pkg Base
GND
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.
*It is recommended to ground all NC pins.
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].
DS140106
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.
8 of 8