nRF904 Nordic VLSI, nRF904 Datasheet - Page 12

• Manufacturer Part Number: nRF904
• Description: RF Transmitter 902-928MHz
• Manufacturer: Nordic VLSI

C10
C1
C2
C3
C4
C5
C6
C7
C8
C9
R1
R2
R3
R4
R5
R6
X1
PRODUCT SPECIFICATION
Nordic VLSI ASA
Revision: 2.1
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PWR_DOWN
CLOCK/ASK
NP0 ceramic chip capacitor, (REXT pin decoupling)
X7R ceramic chip capacitor, (REXT pin decoupling)
X7R ceramic chip capacitor, (Supply decoupling)
NP0 ceramic chip capacitor, (Supply decoupling)
NP0 ceramic chip capacitor, (Supply decoupling)
Tantalum chip capacitor, (Supply decoupling)
X7R ceramic chip capacitor, (Data bit stream filter)
NP0 ceramic chip capacitor, (Antenna tuning)
NP0 ceramic chip capacitor, (Antenna tuning)
NP0 ceramic chip capacitor, (Antenna tuning)
0.1W chip resistor, (Crystal oscillator bias)
0.1W chip resistor, (Transmitter power setting)
0.1W chip resistor, (XO8 output level setting)
0.1W chip resistor, (Data bit stream filter/Frequency
deviation setting)
0.1W chip resistor, (Data bit stream filter/Frequency
deviation setting)
0.1W chip resistor, (Antenna Q reduction)
Crystal
XO8
DIN
-
R1
150k
C1
33pF
Vestre Rosten 81, N-7075 Tiller, Norway
Table 10. Recommended external components.
Figure 10. nRF904 application schematic.
R5
3.9K
R2
47K
C2
4.7nF
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VDD
R4
22K
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C7
680pF
C3
4.7nF
R3
15K
+ C6
C4
33pF
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1
2
3
4
4.7uF
U1
nRF904
915MHz Single chip RF Transmitter
XTAL
REXT
XO8
VDD
X1
14.2992MHz
ANT1
ANT2
VSS
DIN
-
Phone [phone]
0603
0603
0603
0603
0603
3216
0603
0603
0603
0603
0603
0603
0603
0603
0603
0603
8
7
6
5
-
14.094-14.500
680
150
4.7
4.7
4.7
3.3
3.9
6.8
3.9
33
33
33
47
15
22
18
J1
Loop Antenna
9.5x9.5mm
-
VDD
C5
33pF
Fax [phone]
October 2001
C8
3.3pF
C9
3.9pF
C10
6.8pF
0.1
0.1
0.1
R6
18K
MHz
k
k
k
k
k
k
pF
nF
nF
pF
pF
pF
pF
pF
pF
F