RFFM6904 Datasheet, PDF (4/10 Pages) RF Micro Devices – 3.0V TO 4.2V, ISM BAND TRANSMIT/RECEIVE MODULE WITH DIVERSITY TRANSFER SWITCH

RFFM6904
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Pkg Base
Name
LNA IN
LNA VREF
LNA SELECT
RX SWITCH
INPUT
TX SWITCH
INPUT
GND
PA VCC2
GND
GND
PA OUT
GND
GND
GND
PA BIAS
PA VREG
GND
GND
PA IN
GND
PA VCC1
VTX2
VTX1
ANT2
ANT1
VRX1
VRX2
LNA VCC
GND
LNA OUT
GND
GND
GND
GND
Pin Names and Description
Description
RF Input to the low noise amplifier, 50 nominal impedance.
Voltage to set the bias level to the LNA, 3.0V nominal, can be used to shut the LNA off or to adjust the qui-
escent current.
A logic low selects the high gain mode of the LNA, logic high selects the low gain mode.
RF port from the Switch going to the LNA input, 50 nominal impedance.
RF port from the Switch going to the PA output, 50 nominal impedance.
Ground.
Voltage supply for the Power Amplifier, nominal voltage is 3.6V.
Ground.
Ground.
RF output from the Power Amplifier, 50 nominal impedance and DC blocked.
Ground.
Ground.
Ground.
Voltage supply for the Power Amplifier bias network, nominal voltage is 3.6V.
Voltage to set the bias level of the Power Amplifier, nominal voltage is 2.85V.
Ground.
Ground.
RF Input to the Power Amplifier, 50 nominal impedance.
Ground.
Voltage supply for the Power Amplifier, nominal voltage is 3.6V.
Logic input to the Switch, see Logic Table below.
Logic input to the Switch, see Logic Table below.
RF port from the Switch going to Antenna 1, 50 nominal impedance.
RF port from the Switch going to Antenna 2, 50 nominal impedance.
Logic input to the Switch, see Logic Table below.
Logic input to the Switch, see Logic Table below.
LNA Collector Voltage, nominal voltage is 3.0V.
Ground.
RF Output from the low noise amplifier, 50 nominal impedance and DC blocked.
Ground.
Ground.
Ground.
The central metal base of package provides DC and RF GND as well as heat sink for the amplifier.
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DS120605