Datasheet

PRELIMINARY PRODUCT SPECIFICATION
nRF24L01 Single Chip 2.4 GHz Radio Transceiver
Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone [phone] - Fax [phone]
Revision: 1.2 Page 33 of 39 March 2006
APPLICATION EXAMPLE
nRF24L01 with single ended matching network crystal, bias resistor, and decoupling
capacitors.
C2
22pF
0402
C9
10nF
0402
C8
1nF
0402
R2
22K
0402
VDD
C1
22pF
0402
R1
1M
X1
16 MHz
C7
33nF
0402
L1
8.2nH
0402
C3
2.2nF
0402
C4
4.7pF
0402
L3
3.9nH
0402
L2
2.7nH
0402
C5
1.5pF
0402
C6
1.0pF
0402
CE
1
CSN
2
SCK
3
MOSI
4
MI SO
5
IRQ
6
VDD
7
VSS
8
XC2
9
XC1
10
VDD_PA
11
ANT1
12
ANT2
13
VSS
14
VDD
15
IREF
16
VSS
17
VDD
18
DVDD
19
VSS
20
nRF24L01
U1
NRF24L01
CE
CSN
SCK
MO SI
MI SO
IRQ
50ohm, RF I/O
Figure 13 nRF24L01 schematic for RF layouts with single ended 50Ω RF output.
Part Designator Footprint Description
22pF
17
C1 0402
NPO, +/- 2%, 50V
22pF
17
C2 0402
NPO, +/- 2%, 50V
2.2nF C3 0402
X7R, +/- 10%, 50V
4.7pF C4 0402
NPO, +/- 0.25 pF, 50V
1.5pF C5 0402
NPO, +/- 0.1 pF, 50V
1,0pF C6 0402
NPO, +/- 0.1 pF, 50V
33nF C7 0402
X7R, +/- 10%, 50V
1nF C8 0402
X7R, +/- 10%, 50V
10nF C9 0402
X7R, +/- 10%, 50V
8,2nH L1 0402
chip inductor +/- 5%
2.7nH L2 0402
chip inductor +/- 5%
3,9nH L3 0402
chip inductor +/- 5%
1M R1 0402
+/-10%
22K R2 0402
+/- 1 %
nRF24L01 U1 QFN20 4x4
16MHz X1 +/-60ppm, C
L
=12pF
17
Table 16 Recommended components (BOM) in nRF24L01 with antenna matching
network
17
C1 and C2 must have values that match the crystals load capacitance, C
L
.