NRF2402G Nordic VLSI, NRF2402G Datasheet - Page 24

• Manufacturer Part Number: NRF2402G
• Manufacturer: Nordic VLSI

PRODUCT SPECIFICATION
nRF2402 Single Chip 2.4 GHz Radio Transmitter
Output Power adjustment
Crystal Specification
Tolerance includes initially accuracy and tolerance over temperature and aging.
To achieve a crystal oscillator solution with low power consumption and fast start-up time, it
is recommended to specify the crystal with a low value of crystal load capacitance.
Specifying a lower value of crystal parallel equivalent capacitance, Co=1.5pF is also good,
but this can increase the price of the crystal itself. Typically Co=1.5pF at a crystal specified
for Co_max=7.0pF.
The crystal load capacitance, C
C
the layout parasitic on the circuit board. C
XC2 pin respectively; the value is typical 1pF.
Nordic Semiconductor ASA
Revision: 2.1
1
and C
C
L
2
are SMD capacitors as shown in the application schematics. C
C
C
1
1
'
'
C
C
Frequency
2
2
Power setting bits of
'
12MHz
16MHz
20MHz
'
4MHz
8MHz
configuring word
,
-
Table 16 RF output power setting for the nRF2402.
where
Vestre Rosten 81, N-7075 Tiller, Norway
Table 17 Crystal specification of the nRF2402
11
10
01
00
C
Conditions: Load impedance = 100+j175 .
1
8pF – 16pF
8pF – 16pF
8pF – 16pF
8pF – 16pF
8pF – 16pF
L
'
, is given by:
C
C
1
L
Page 24 of 32
C
PCB
I1
1
RF output power
150
100
100
100
100
and C
ESR
C
-10 dBm ±3dB
-20 dBm ±3dB
-5 dBm ±3dB
0 dBm ±3dB
I
1
and
I2
C
are the capacitance seen into the XC1 and
-
C
2
7.0pF
7.0pF
7.0pF
7.0pF
7.0pF
'
0max
Phone [phone]
C
2
C
consumption
PCB
DC current
Tolerance
2
11.5 mA
10.0 mA
8.5 mA
7.0 mA
30ppm
30ppm
30ppm
30ppm
30ppm
C
I
2
- Fax [phone]
PCB1
March 2006
and C
PCB2
are