RFFM4591 Datasheet, PDF (5/8 Pages) RF Micro Devices – 802.11a/n/ac FRONT END MODULE

RFFM4591
Logic Control Table
Mode
PA_EN LNA_EN
Standby
Low
Low
802.11a/n/ac Tx
High
Low
802.11a/n/ac Rx Gain
Low
High
802.11a/n/ac Rx
Bypass
Low
Low
Note: High = 2.8V to V_CC, Low = 0V to 0.2V
C_RX
Low
Low
High
High
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pkg Base
Name
GND
RX
GND
VDD
PDET
PA_EN
NC
TX
NC
VCC
VCC
GND
ANT
GND
C_RX
LNA_EN
GND
Pin Names and Descriptions
Description
Ground connection.
RF output port for the 802.11a/n/ac LNA. Input is matched to 50Ω and DC block is provided internally.
Ground connection.
Supply voltage for the LNA. See applications schematic for biasing and bypassing components.
Power detector voltage for Tx section. PDET voltage varies with output power. May need external capacitor
for noise decoupling.
Control voltage for the PA and Tx switch. See truth table for proper settings.
Not Connected. This Pin is not internally connected so customer has the choice to leave it NC or ground it.
RF input port for the 802.11a/n/ac PA. Input is matched to 50Ω and DC block is provided internally.
Not Connected. This Pin is not internally connected so customer has the choice to leave it NC or ground it.
Supply voltage for the PA. See applications schematic for biasing and bypassing components.
Supply voltage for the PA. See applications schematic for biasing and bypassing components.
Ground connection.
RF bidirectional antenna port matched to 50Ω and DC block is provided internally.
Ground connection.
Receive switch control pin. See switch truth table for proper level.
Control voltage for the LNA. When this pin is set to a LOW logic state, the bypass mode is enabled.
Ground connection.
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