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NRF24L01P-R データシート(PDF) 67 Page - Nordic Semiconductor

部品番号 NRF24L01P-R
部品情報  Single Chip 2.4GHz Transceiver
PDF  78 Pages
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メーカー  NORDIC [Nordic Semiconductor]
ホームページ  https://www.nordicsemi.com/
Logo NORDIC - Nordic Semiconductor

NRF24L01P-R データシート(HTML) 67 Page - Nordic Semiconductor

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Revision 1.0
Page 67 of 78
nRF24L01+ Product Specification
Table 29. Recommended components (BOM) in nRF24L01+ with antenna matching network
11.1
PCB layout examples
Figure 33., Figure 34. and Figure 35. show a PCB layout example for the application schematic in Figure
32..
A double-sided FR-4 board of 1.6mm thickness is used. This PCB has a ground plane on the bottom layer.
Additionally, there are ground areas on the component side of the board to ensure sufficient grounding of
critical components. A large number of via holes connect the top layer ground areas to the bottom layer
ground plane.
Part
Designator
Footprint
Description
22pFa
C1
0402
NPO, +/- 2%
22pFa
C2
0402
NPO, +/- 2%
2.2nF
C3
0402
X7R, +/- 10%
4.7pF
C4
0402
NPO, +/- 0.25pF
1.5pF
C5
0402
NPO, +/- 0.1pF
1,0pF
C6
0402
NPO, +/- 0.1pF
33nF
C7
0402
X7R, +/- 10%
1nF
C8
0402
X7R, +/- 10%
10nF
C9
0402
X7R, +/- 10%
8,2nH
L1
0402
chip inductor +/- 5%
2.7nH
L2
0402
chip inductor +/- 5%
3,9nH
L3
0402
chip inductor +/- 5%
Not mountedb
R1
0402
22k
Ω
R2
0402
+/-1%
nRF24L01+
U1
QFN20 4x4
16MHz
X1
+/-60ppm, CL=12pF
a. C1 and C2 must have values that match the crystals load capacitance, CL.
b. The nRF24L01+ and nRF24L01 application example and BOM are the same with the exception of
R1. R1 can be mounted for backward compatibility with nRF24L01. The use of a 1Mohm resistor
externally does not have any impact on crystal performance.



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