DocID023194 Rev4

3/17

AN4111

Benefits of BAL-NRF01D3 reference design

2

Benefits of BAL-NRF01D3 reference design

Figure 3. Traditional discrete solution for nRF24LE1

Figure 4. nRF24LE1 solution using BAL-NRF01D3

Using BAL-NRF01D3 no external components are required for matching and for harmonic

nRF24LE1 is shown in Figure 8.

Balun + Filter

GND

15pF

C2

15pF

C1

16MHz

X1

GND

100nF

C11

VCC_nRF

GND

100nF

C9

33nF

C8

GND

GND

VCC_nRF

GND

VCC_nRF

GND

P0.2

P

0.3

PROG

100nF

C7

GND

33nF

C10

22k

R1

1%

0R

R4

0R

R5

Ain2

Ain3

6.8n

L1

2.2nF

C3

NA

C4

4.7n

L3

6.8n

L2

1.5p

C5

1.0p

C6

GND

GND

GND

nRF24LE1F16Q32

P0.1

1

VDD

2

VSS

8

P0.3

7

DEC1

3

DEC2

4

PROG

6

P1.3

17

P1.4

18

RESET

19

VDD_PA

20

ANT1

21

ANT2

22

VSS

23

VDD

24

nRF24LE1

P0.2

5

U1

P1.5

P

1.6

P0.0

P

0.1

0R

R2

0R

R3

Ain0

Ain1

P4

15pF

C17

15pF

C18

GND

X2

J1

GND

15pF

C2

15pF

C1

16MHz

X1

GND

100nF

C11

VCC_nRF

GND

100nF

C9

33nF

C8

GND

GND

VCC_nRF

GND

VCC_nRF

GND

P0.2

P0.3

PROG

100nF

C7

GND

33nF

C10

22k

R1

1%

0R

R4

0R

R5

Ain2

Ain3

2.2nF

C3

NA

C4

GND

GND

nRF24LE1F16Q32

P0.1

1

VDD

2

VSS

8

P0.3

7

DEC1

3

DEC2

4

PROG

6

P1.3

17

P1.4

1

8

RESET

19

VDD_PA

20

ANT1

21

ANT2

2

2

VSS

2

3

VDD

24

nRF24LE1

P0.2

5

U1

P1.5

P1.6

P0.0

P0.1

0R

R2

0R

R3

Ain0

Ain1

P4

15pF

C17

15pF

C18

GND

X2

J1

GND

ANT1

2

ANT2

1

VDD_PA

3

GND

4

SE

5

U2

BAL-NRF01D3