Page 1
RFAXIS INC. CONFIDENTIAL NDA MATERIAL
RFX2411 Single-Chip CMOS RFeIC with PA, LNA, Antenna Switch, Combined Tx/Rx Transceiver Port, Input Port to Antenna Ports
Bypass Mode, and Diversity Switch
Evaluation Board ResultsSummary & Technical Notes
7/13/2015
Rev. 2.4
1
Page 2
RFAXIS INC. CONFIDENTIAL NDA MATERIAL
RFX2411 RFeIC Key Features and Benefits
7/13/2015
3x3x0.55mm
20L QFN
RFX2411 Differentiating Features Integration of PA, LNA, Tx-Rx Switching Circuitry,
Associated Matching Network, Harmonic Filter, PA Power Detection Circuit and Diversity switch all in a Single-Chip, Single-Die pure CMOS Solution
Greatly Reduced and Simplified Tx/Rx Control Low Current Mode for ultra low power consumption Low Voltage Battery Operation down to 2.0V Digital Logic with 1.2V Turn-On Voltage No Vref Regulator for Biasing Common Tx/Rx Port Saves Additional SPDT Requires Minimal External Components Small, Ultra-Thin 3x3x0.55mm 20L QFN Package
RFX2411 Customer Benefits Greatly Simplified, 50 Ohm “Plug & Play” PCB
Implementation Small Form-Factor and Quick Design Cycle Simplest Approach to Improve Link Performance
including Range and Receiver Sensitivity Very Low BOM Cost and Competitive Price
APPLICATIONS 802.15.4 ZigBee Extended Range Devices ZigBee Smart Power ZigBee Home Area Network RF4CE Remote Control Wireless Sensor Networks Other 2.4GHz ISM Band Systems
2
NC
GND
1
2
3
4
14
13
12
11
1920 18
GND
21
DNC
GND
GND
DNC
ANTA
VDD2 VDD1
GND
NC ANTB
6 7 8 9
ModePDETRXENTXEN
17 16
5
10
SWant
15
IND
TXRX
DNC
Page 3
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015
RFX2411 Pin Description
3
GND
NC
DNC
NC
TXRX
1
2
3
4
5
6 7 8 9 10
11
12
13
14
15
1617181920
21GND
TXEN RXEN PDET MODE SWANT
GND
GND
IND
ANTA
ANTB
VDD1 DNCDNCVDD2 GND
Pin Number Pin Name Description
1, 11,13, 19,
21GND Ground – Must be connected to Ground in the Application Circuit
2, 4 NC No Internal Connection
5 TXRX RF signal to/from the Transceiver: DC shorted to GND
6 TXEN CMOS Input to Control TX Enable
7 RXEN CMOS Input to Control RX Enable
8 PDET Analog Voltage Proportional to the PA Power Output
9 MODE CMOS Input to control mode of operation
10 SWant CMOS Input to select antenna for diversity
12 ANTBRF Signal from the PA or RF Signal Applied to the LNA; DC
Shorted to GND
14 ANTARF Signal from the PA or RF Signal Applied to the LNA; DC
Shorted to GND
15 IND Inductor to GND
3, 16, 17 DNC Reserved – Do Not Connect in the Application Circuit
18 VDD1 Voltage Supply Connection
20 VDD2 Voltage Supply Connection
Page 4
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015
RFX2411 Evaluation Board and Preliminary BOMFor VDD decoupling: Detector Loading:C1, C2=2.2uF R3 = 10KohmC3, C4=220pF
Digital Control Protection:R1 = R2 = R4 = R5 = 1Kohm (Recommended for control lines with voltage that may approach Vdd levels).
For Harmonic Suppression:L1=1.2nH (Inductor value may need to be optimized in final application circuit since it is layout dependent)Additional filtering may be required for compliance depending on system configuration and application.
Eval PCB Information:- 4-Layer Stack, 10mil/40mil/10mil- FR4 with er=4.5, tan d = 0.02 (typ.)- All trace losses have been de-embedded from the following Measurements.
4
Control Logic Truth Table
SWant Mode of Operation
1 ANTA port enabled
0 ANTB port enabled
GN
DV
DD
2V
DD
1SW
ant
TXEN
RX
ENP
DET
Mo
de
ANTA
ANTB
TXRX
C1
C2C3C4
R2R3R4R5
R1
L1
Note: “1” denotes high voltage state (> 1.2V) at Control Pins“0” denotes low voltage state (< 0.3V) at Control Pins
TXEN RXEN MODE Mode of Operation
0 0 0 Shutdown Mode
0 0 1 Bypass Mode
1 X 0 Low Idq TX Mode
1 X 1 High Idq TX Mode
0 1 0 Low Noise Figure Receive Mode
0 1 1 Low Current Receive Mode
Page 5
RFAXIS INC. CONFIDENTIAL NDA MATERIAL
RFX2411 Eval Board De-Embedding Table
5
EVB Signal Loss De-Embedding
RF Signal Loss
ANT .22 dB
TX .22 dB
RX .22 dB
Total EVB Loss Includes the Trace and Connector
Page 6
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 6
TX Large Signal Gain & Current vs. Pout Across Frequency Antenna A, Low Idq Mode, CW Signal
TXEN=1.2V, RXEN=0V, SWANT=1.2V, Mode=0V
0
20
40
60
80
100
120
140
160
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Cu
rren
t [m
A]
Pout [dBm]
Max Current VDD = 3.3V Low Idq Mode
2.412 GHz 2.437 GHz 2.472 GHz
20
22
24
26
28
30
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Gai
n [
dB
]
Pout [dBm]
Gain VDD = 3.3V Low Idq Mode
2.412 GHz 2.437 GHz 2.472 GHz
Page 7
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 7
TX Large Signal 2nd and 3rd Harmonic Across Frequency Antenna A, Low Idq Mode, CW Signal
TXEN=1.2V, RXEN=0V, SWANT=1.2V, Mode=0V
-60-55-50-45-40-35-30-25-20-15-10
-50
-8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
2n
d [
dB
m]
Pout [dBm]
2nd Harmonic VDD = 3.3V Low Idq Mode
2.412 GHz 2.437 GHz 2.472 GHz
-60-55-50-45-40-35-30-25-20-15-10
-50
-8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
3rd
[d
Bm
]
Pout [dBm]
3rd Harmonic VDD = 3.3V Low Idq Mode
2.412 GHz 2.437 GHz 2.472 GHz
Page 8
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 8
TX Large Signal Detector Voltage vs. Pout Across Frequency Antenna A, Low Idq Mode, CW Signal
TXEN=1.2V, RXEN=0V, SWANT=1.2V, Mode=0V
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
-8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
VD
ET [
V]
Pout [dBm]
Vdet VDD = 3.3V Low Idq Mode
2.412 GHz
2.437 GHz
2.472 GHz
Page 9
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 9
TX Large Signal Gain & Current vs. Pout Across Frequency Antenna A, High Idq Mode, CW Signal
TXEN=1.2V, RXEN=0V, SWANT=1.2V, Mode=1.2V
0
20
40
60
80
100
120
140
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Cu
rren
t [m
A]
Pout [dBm]
Max Current VDD = 3.3V High Idq Mode
2.412 GHz 2.437 GHz 2.472 GHz
20
22
24
26
28
30
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Gai
n [
dB
]
Pout [dBm]
Gain VDD = 3.3V High Idq Mode
2.412 GHz 2.437 GHz 2.472 GHz
Page 10
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 10
TX Large Signal 2nd and 3rd Harmonic Across Frequency Antenna A, High Idq Mode, CW Signal
TXEN=1.2V, RXEN=0V, SWANT=1.2V, Mode=1.2V
-60-55-50-45-40-35-30-25-20-15-10
-50
-8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
2n
d [
dB
m]
Pout [dBm]
2nd Harmonic VDD = 3.3V High Idq Mode
2.412 GHz 2.437 GHz 2.472 GHz
-60-55-50-45-40-35-30-25-20-15-10
-50
-8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
3rd
[d
Bm
]
Pout [dBm]
3rd Harmonic VDD = 3.3V High Idq Mode
2.412 GHz 2.437 GHz 2.472 GHz
Page 11
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 11
TX Large Signal Detector Voltage vs. Pout Across Frequency Antenna A, High Idq Mode, CW Signal
TXEN=1.2V, RXEN=0V, SWANT=1.2V, Mode=1.2V
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
-8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
VD
ET [
V]
Pout [dBm]
Vdet VDD = 3.3V High Idq Mode
2.412 GHz
2.437 GHz
2.472 GHz
Page 12
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 12
TX Large Signal Gain & Current vs. Pout Across Frequency Antenna B, Low Idq Mode, CW Signal
TXEN=1.2V, RXEN=0V, SWANT=1.2V, Mode=0V
0
20
40
60
80
100
120
140
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Cu
rren
t [m
A]
Pout [dBm]
Max Current VDD = 3.3V Low Idq Mode
2.412 GHz 2.437 GHz 2.472 GHz
20
22
24
26
28
30
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Gai
n [
dB
]
Pout [dBm]
Gain VDD = 3.3V Low Idq Mode
2.412 GHz 2.437 GHz 2.472 GHz
Page 13
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 13
TX Large Signal 2nd and 3rd Harmonic Across Frequency Antenna B, Low Idq Mode, CW Signal
TXEN=1.2V, RXEN=0V, SWANT=1.2V, Mode=0V
-60-55-50-45-40-35-30-25-20-15-10
-50
-8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
2n
d [
dB
m]
Pout [dBm]
2nd Harmonic VDD = 3.3V Low Idq Mode
2.412 GHz 2.437 GHz 2.472 GHz
-60-55-50-45-40-35-30-25-20-15-10
-50
-8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
3rd
[d
Bm
]
Pout [dBm]
3rd Harmonic VDD = 3.3V Low Idq Mode
2.412 GHz 2.437 GHz 2.472 GHz
Page 14
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 14
TX Large Signal Detector Voltage vs. Pout Across Frequency Antenna B, Low Idq Mode, CW Signal
TXEN=1.2V, RXEN=0V, SWANT=1.2V, Mode=0V
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
-8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
VD
ET [
V]
Pout [dBm]
Vdet VDD = 3.3V Low Idq Mode
2.412 GHz
2.437 GHz
2.472 GHz
Page 15
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 15
TX Large Signal Gain & Current vs. Pout Across Frequency Antenna B, High Idq Mode, CW Signal
TXEN=1.2V, RXEN=0V, SWANT=1.2V, Mode=1.2V
0
20
40
60
80
100
120
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
Cu
rren
t [m
A]
Pout [dBm]
Max Current VDD = 3.3V High Idq Mode
2.412 GHz 2.437 GHz 2.472 GHz
20
22
24
26
28
30
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
Gai
n [
dB
]
Pout [dBm]
Gain VDD = 3.3V High Idq Mode
2.412 GHz 2.437 GHz 2.472 GHz
Page 16
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 16
TX Large Signal 2nd and 3rd Harmonic Across Frequency Antenna B, High Idq Mode, CW Signal
TXEN=1.2V, RXEN=0V, SWANT=1.2V, Mode=1.2V
-60-55-50-45-40-35-30-25-20-15-10
-50
-8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
2n
d [
dB
m]
Pout [dBm]
2nd Harmonic VDD = 3.3V High Idq Mode
2.412 GHz 2.437 GHz 2.472 GHz
-60-55-50-45-40-35-30-25-20-15-10
-50
-8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
3rd
[d
Bm
]
Pout [dBm]
3rd Harmonic VDD = 3.3V High Idq Mode
2.412 GHz 2.437 GHz 2.472 GHz
Page 17
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 17
TX Large Signal Detector Voltage vs. Pout Across Frequency Antenna B, High Idq Mode, CW Signal
TXEN=1.2V, RXEN=0V, SWANT=1.2V, Mode=1.2V
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
-8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
VD
ET [
V]
Pout [dBm]
Vdet VDD = 3.3V High Idq Mode
2.412 GHz
2.437 GHz
2.472 GHz
Page 18
RFAXIS INC. CONFIDENTIAL NDA MATERIAL
18
19
20
21
22
23
24
25
26
27
28
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Ga
in [
dB
]
Pout [dBm]
Antenna B Gain 2.437 GHz
VDD = 3.6V Mode LowVDD = 3.3V Mode LowVDD = 2.9V Mode LowVDD = 2.6V Mode LowVDD = 2.4V Mode LowVDD = 2.2V Mode LowVDD = 2.0V Mode LowVDD = 1.8V Mode Low
7/13/2015 18
TX Large Signal Gain & Current vs. Pout Across VDD 2.437 GHz, Low Idq Mode, CW Signal
TXEN=1.2V, RXEN=0V, Mode=0V
18
19
20
21
22
23
24
25
26
27
28
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Ga
in [
dB
]
Pout [dBm]
Antenna A Gain 2.437 GHz
VDD = 3.6V Mode LowVDD = 3.3V Mode LowVDD = 2.9V Mode LowVDD = 2.6V Mode LowVDD = 2.4V Mode LowVDD = 2.2V Mode LowVDD = 2.0V Mode LowVDD = 1.8V Mode Low
Page 19
RFAXIS INC. CONFIDENTIAL NDA MATERIAL
18
19
20
21
22
23
24
25
26
27
28
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
Ga
in [
dB
]
Pout [dBm]
Antenna B Gain 2.437 GHz
VDD = 3.6V Mode LowVDD = 3.3V Mode LowVDD = 2.9V Mode LowVDD = 2.6V Mode LowVDD = 2.4V Mode LowVDD = 2.2V Mode LowVDD = 2.0V Mode LowVDD = 1.8V Mode Low
7/13/2015 19
TX Large Signal Gain & Current vs. Pout Across VDD 2.437 GHz, High Idq Mode, CW Signal
TXEN=1.2V, RXEN=0V, Mode=1.2V
18
19
20
21
22
23
24
25
26
27
28
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Ga
in [
dB
]
Pout [dBm]
Antenna A Gain 2.437 GHz
VDD = 3.6V Mode LowVDD = 3.3V Mode LowVDD = 2.9V Mode LowVDD = 2.6V Mode LowVDD = 2.4V Mode LowVDD = 2.2V Mode LowVDD = 2.0V Mode LowVDD = 1.8V Mode Low
Page 20
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 20
Idq ~ 15mA
TX S-Parameters Across VoltageAntenna A and B, Low Idq Mode
-100.0
-80.0
-60.0
-40.0
-20.0
0.0
20.0
40.0
0 1 2 3 4 5 6 7 8
S2
1, d
B
Frequency, GHz
Antenna A S21
3.6V3.3V2.9V2.6V2.4V2.2V2.0V1.8V
-100.0
-80.0
-60.0
-40.0
-20.0
0.0
20.0
40.0
0 1 2 3 4 5 6 7 8
S2
1, d
B
Frequency, GHz
Antenna B S21
3.6V
3.3V
2.9V
2.6V
2.4V
2.2V
2.0V
1.8V
Page 21
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 21
Idq ~ 15mA
TX S-Parameters Across VoltageAntenna A S11 and S22, Low Idq Mode
-40.0
-35.0
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
0 1 2 3 4 5 6 7 8
S11
, d
B
Frequency, GHz
Antenna A S11
3.6V
3.3V
2.9V
2.6V
2.4V
2.2V
2.0V
1.8V
-40.0
-35.0
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
0 1 2 3 4 5 6 7 8
S2
2, d
B
Frequency, GHz
Antenna A S22
3.6V3.3V2.9V2.6V2.4V2.2V2.0V1.8V
Page 22
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 22
Idq ~ 15mA
TX S-Parameters Across VoltageAntenna B S11 and S22, Low Idq Mode
-40.0
-35.0
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
0 1 2 3 4 5 6 7 8
S11
, d
B
Frequency, GHz
Antenna B S11
3.6V
3.3V
2.9V
2.6V
2.4V
2.2V
2.0V
1.8V
-40.0
-35.0
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
0 1 2 3 4 5 6 7 8
S11
, d
B
Frequency, GHz
Antenna B S22
3.6V
3.3V
2.9V
2.6V
2.4V
2.2V
2.0V
1.8V
Page 23
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 23
Idq ~ 18mA
TX S-Parameters Across VoltageAntenna A and B, High Idq Mode
-80.0
-60.0
-40.0
-20.0
0.0
20.0
40.0
0 1 2 3 4 5 6 7 8
S2
1, d
B
Frequency, GHz
Antenna B S21
3.6V
3.3V
2.9V
2.6V
2.4V
2.2V
2.0V
1.8V
-100.0
-80.0
-60.0
-40.0
-20.0
0.0
20.0
40.0
0 1 2 3 4 5 6 7 8
S2
1, d
B
Frequency, GHz
Antenna A S21
3.6V3.3V2.9V2.6V2.4V2.2V2.0V1.8V
Page 24
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 24
Idq ~ 18mA
TX S-Parameters Across VoltageAntenna A S11 and S22, High Idq Mode
-40.0
-35.0
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
0 1 2 3 4 5 6 7 8
S11
, d
B
Frequency, GHz
Antenna A S11
3.6V
3.3V
2.9V
2.6V
2.4V
2.2V
2.0V
1.8V
-40.0
-35.0
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
0 1 2 3 4 5 6 7 8
S2
2, d
B
Frequency, GHz
Antenna A S22
3.6V3.3V2.9V2.6V2.4V2.2V2.0V1.8V
Page 25
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 25
Idq ~ 18mA
TX S-Parameters Across VoltageAntenna B S11 and S22, High Idq Mode
-40.0
-35.0
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
0 1 2 3 4 5 6 7 8
S11
, d
B
Frequency, GHz
Antenna B S11
3.6V
3.3V
2.9V
2.6V
2.4V
2.2V
2.0V
1.8V
-40.0
-35.0
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
0 1 2 3 4 5 6 7 8
S11
, d
B
Frequency, GHz
Antenna B S22
3.6V
3.3V
2.9V
2.6V
2.4V
2.2V
2.0V
1.8V
Page 26
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 26
RX Noise Figure and GainAntenna A, Low Noise Figure Mode
TXEN=0V, RXEN=1.2V, SWANT=1.2V, Mode=0V, Idq= 9 mA
0
2
4
6
8
10
12
14
16
2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3
Ga
in [
dB
]
f [GHz]
Antenna A Gain
VDD=3.6 VDD=3.3
VDD=3.0 VDD=2.7
VDD=2.4 VDD=2.0
0
1
2
3
4
5
6
7
8
2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3
No
ise
Fig
ure
[d
B]
f [GHz]
Antenna A Noise Figure
VDD=3.6 VDD=3.3
VDD=3.0 VDD=2.7
VDD=2.4 VDD=2.0
Page 27
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 27
RX Noise Figure and GainAntenna A, Low Current Mode
TXEN=0V, RXEN=1.2V, SWANT=1.2V, Mode=1.2V Idq= 3 mA
0
2
4
6
8
10
12
14
16
2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3
Ga
in [
dB
]
f [GHz]
Antenna A Gain
VDD=3.6 VDD=3.3
VDD=3.0 VDD=2.7
VDD=2.4 VDD=2.0
0
1
2
3
4
5
6
7
8
2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3
No
ise
Fig
ure
[d
B]
f [GHz]
Antenna A Noise Figure
VDD=3.6 VDD=3.3
VDD=3.0 VDD=2.7
VDD=2.4 VDD=2.0
Page 28
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 28
RX Noise Figure and GainAntenna B, Low Noise Figure Mode
TXEN=0V, RXEN=1.2V, SWANT=1.2V, Mode=0V, Idq= 9 mA
0
2
4
6
8
10
12
14
16
2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3
Ga
in [
dB
]
f [GHz]
Antenna B Gain
VDD=3.6 VDD=3.3
VDD=3.0 VDD=2.7
VDD=2.4 VDD=2.0
0
1
2
3
4
5
6
7
8
2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3
No
ise
Fig
ure
[d
B]
f [GHz]
Antenna B Noise Figure
VDD=3.6 VDD=3.3
VDD=3.0 VDD=2.7
VDD=2.4 VDD=2.0
Page 29
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 29
RX Noise Figure and GainAntenna A, Low Current Mode
TXEN=0V, RXEN=1.2V, SWANT=1.2V, Mode=1.2V Idq= 3 mA
0
2
4
6
8
10
12
14
16
2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3
Ga
in [
dB
]
f [GHz]
Antenna B Gain
VDD=3.6 VDD=3.3
VDD=3.0 VDD=2.7
VDD=2.4 VDD=2.0
0
1
2
3
4
5
6
7
8
2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3
No
ise
Fig
ure
[d
B]
f [GHz]
Antenna B Noise Figure
VDD=3.6 VDD=3.3
VDD=3.0 VDD=2.7
VDD=2.4 VDD=2.0
Page 30
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 30
Idq ~ 9mA
RX S-Parameters Across VoltageAntenna A and B, Low Noise Figure Mode
-60.0
-50.0
-40.0
-30.0
-20.0
-10.0
0.0
10.0
20.0
0 1 2 3 4 5 6 7 8
S2
1, d
B
Frequency, GHz
RX S21 Antenna A
3.6V
3.3V
2.9V
2.6V
2.4V
2.2V
2.0V
1.8V
-60.0
-50.0
-40.0
-30.0
-20.0
-10.0
0.0
10.0
20.0
0 1 2 3 4 5 6 7 8
S2
1, d
B
Frequency, GHz
RX S21 Antenna B
3.6V
3.3V
2.9V
2.6V
2.4V
2.2V
2.0V
1.8V
Page 31
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 31
Idq ~ 9mA
RX S-Parameters Across VoltageAntenna A S11 and S22, Low Noise Figure Mode
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
0 1 2 3 4 5 6 7 8
S11
, d
B
Frequency, GHz
RX S22 Antenna A
3.6V
3.3V
2.9V
2.6V
2.4V
2.2V
2.0V
1.8V
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
0 1 2 3 4 5 6 7 8
S2
2, d
B
Frequency, GHz
RX S11 Antenna A
3.6V
3.3V
2.9V
2.6V
2.4V
2.2V
2.0V
1.8V
Page 32
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 32
Idq ~ 9mA
RX S-Parameters Across VoltageAntenna B S11 and S22, Low Noise Figure Mode
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
0 1 2 3 4 5 6 7 8
S11
, d
B
Frequency, GHz
RX S22 Antenna B
3.6V
3.3V
2.9V
2.6V
2.4V
2.2V
2.0V
1.8V
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
0 1 2 3 4 5 6 7 8
S11
, d
B
Frequency, GHz
RX S11 Antenna B
3.6V
3.3V
2.9V
2.6V
2.4V
2.2V
2.0V
1.8V
Page 33
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 33
Idq ~ 3mA
RX S-Parameters Across VoltageAntenna A and B, Low Current Mode
-60.0
-50.0
-40.0
-30.0
-20.0
-10.0
0.0
10.0
20.0
0 1 2 3 4 5 6 7 8
S2
1, d
B
Frequency, GHz
RX S21 Antenna A
3.6V
3.3V
2.9V
2.6V
2.4V
2.2V
2.0V
1.8V
-60.0
-50.0
-40.0
-30.0
-20.0
-10.0
0.0
10.0
20.0
0 1 2 3 4 5 6 7 8
S2
1, d
B
Frequency, GHz
RX S21 Antenna B
3.6V
3.3V
2.9V
2.6V
2.4V
2.2V
2.0V
1.8V
Page 34
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 34
Idq ~ 3mA
RX S-Parameters Across VoltageAntenna A S11 and S22, Low Current Mode
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
0 1 2 3 4 5 6 7 8
S11
, d
B
Frequency, GHz
RX S22 Antenna A
3.6V
3.3V
2.9V
2.6V
2.4V
2.2V
2.0V
1.8V
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
0 1 2 3 4 5 6 7 8
S2
2, d
B
Frequency, GHz
RX S11 Antenna A
3.6V
3.3V
2.9V
2.6V
2.4V
2.2V
2.0V
1.8V
Page 35
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 35
Idq ~ 3mA
RX S-Parameters Across VoltageAntenna B S11 and S22, Low Current Mode
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
0 1 2 3 4 5 6 7 8
S11
, d
B
Frequency, GHz
RX S22 Antenna B
3.6V
3.3V
2.9V
2.6V
2.4V
2.2V
2.0V
1.8V
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
0 1 2 3 4 5 6 7 8
S11
, d
B
Frequency, GHz
RX S11 Antenna B
3.6V
3.3V
2.9V
2.6V
2.4V
2.2V
2.0V
1.8V
Page 36
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 36
Idq ~ 1uA
Bypass S-Parameters Across VoltageAntenna A and B
-60.0
-50.0
-40.0
-30.0
-20.0
-10.0
0.0
0 1 2 3 4 5 6 7 8
S2
1, d
B
Frequency, GHz
RX S21 Antenna A
3.6V
3.3V
3.0V
2.7V
2.4V
2.0V
-60.0
-50.0
-40.0
-30.0
-20.0
-10.0
0.0
0 1 2 3 4 5 6 7 8
S2
1, d
B
Frequency, GHz
RX S21 Antenna B
3.6V
3.3V
3.0V
2.7V
2.4V
2.0V
Page 37
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 37
Idq ~ 1uA
Bypass S-Parameters Across VoltageAntenna A S11 and S22
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
0 1 2 3 4 5 6 7 8
S11
, d
B
Frequency, GHz
RX S22 Antenna A
3.6V
3.3V
3.0V
2.7V
2.4V
2.0V
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
0 1 2 3 4 5 6 7 8
S2
2, d
B
Frequency, GHz
RX S11 Antenna A
3.6V
3.3V
3.0V
2.7V
2.4V
2.0V
Page 38
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 38
Idq ~ 1uA
RX S-Parameters Across VoltageAntenna B S11 and S22
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
0 1 2 3 4 5 6 7 8
S11
, d
B
Frequency, GHz
RX S22 Antenna B
3.6V
3.3V
3.0V
2.7V
2.4V
2.0V
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
0 1 2 3 4 5 6 7 8
S11
, d
B
Frequency, GHz
RX S11 Antenna B
3.6V
3.3V
3.0V
2.7V
2.4V
2.0V
Page 39
RFAXIS INC. CONFIDENTIAL NDA MATERIAL7/13/2015 39
RFX2411 Application Schematic
Recommended BOM:
R3=10KR1=R2=R4=R5=1KC1=C2=2.2uFC3=C4=220pFL1=1.2nH
Notes: R1, R2, R4, R5 on the control lines are for standalone EVBs, and are recommended in actual system implementation when the control line voltage will approach VDD
Page 40
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information: Skyworks:
RFX2411-EVB