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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Mouser Electronics

Authorized Distributor

Click to View Pricing, Inventory, Delivery & Lifecycle Information: Skyworks:

  RFX2411-EVB