Application circuit

AN4378

6/19

DocID025421 Rev 1

Figure 2. BlueNRG application daughterboard plugged into the motherboard

Figure 3. Daughterboard schematic

AUXADN

L2

TBD_0402

R1

nc

C21

100n_0402_X7R

C1

1u_0402_X5R

J4

HEADER 5X2

C3

100p_0402_COG

C9

TBD_0402_COG

JP1

FTEST

1

3

Q2

XTAL_16M

C5

22p_0402_COG

C8

TBD_0402_COG

C2

100n_0402_X7R

J1

JTAG

1

2

3

4

5

6

7

8

9

10

C16

100n_0402_X7R

R3

nc

R2

10k_0402

U3

M95640

nS

1

Q

2

nW

3

Vss

4

Vcc

8

nHOLD

7

C

6

D

5

SOSCOUT

C11

TBD_0402_COG

R9

100k_0402

C15

100p_0402_COG

R6

nc

C22

1u_0402_X5R

C10

TBD_0402_COG

C6

22p_0402_COG

C7

TBD_0402_COG

C14

12p_0402_COG

R7

100k_0402

J3

HEADER 5X2

C17

1u_0402_X5R

C12

TBD_0402_COG

C19

100n_0402_X7R

C23

100n_0402_X7R

Q1

XTAL_32k

L1

TBD_0402

R4

nc

AUXADP

C4

150n_0402_X5R

C13

12p_0402_COG

C20

1u_0402_X5R

U1

SPI_MOSI

1

SPI_CLK

2

DIO7

3

DIO6

4

VBAT3

5

DIO5

6

DIO4

7

JTAG_TCK

8

FXTAL0

18

FXTAL1

17

VBAT1

24

SXTAL0

23

SXTAL1

22

RF0

21

RF1

20

VBAT2

19

BlueNRG-N

U2

Jumper2

1

1

2

2

L3

TBD_0402

D1

1

3

J2

SMA laterale

C18

100n_0402_X7R

R5

nc

VBAT1

nS

CLK

MOSI

MISO

MOSI

CLK

IRQ

VBAT2

VBAT3

VBAT3

JTCK

nS

FTEST

JTMS

JTCK

JTDO

JTDI

VBAT2

SOSCOUT

AUXADP

AUXADN

VDD

VDD

VDD

VDD

VDD

VDD

3V3

3V3

VDD

VDD

Solder a 10u_0805 between 1-2

or a 0R0_0805 between 1-3

Male Connector 2x5

AM17618v1