NRF402 Datasheet, PDF (12/16 Pages) List of Unclassifed Manufacturers – 433MHz Single Chip RF Transmitter

PRODUCT SPECIFICATION
nRF402 Single Chip RF Transmitter
APPLICATION SCHEMATIC
+3V
C5
2.2uF
1206
R1
1M
0603
C1
22pF
0603
X1
4.000 MHz
REFERENCE
C2
22pF
0603
C3
4.7nF
0603
C4
100pF
0603
L1
22nH
0603
U1
CS
1
2
3
4
5
6
7
XC1
VSS
VDD
VCO1
VCO2
LPF
CS
XC2
PWR_UP
VSS
ANT1
ANT2
DIN
RF_PWR
14
13
12
PWR_UP
11
10
9
8
DIN
nRF402
433MHz Single chip RF Transmitter
SSOIC14
R3
22K
0603
C6
100pF
0603
C7
5.6pF
0603
C8
10pF
0603
R2 ^aaaaaaaa
18K
0603
J1
Loop antenna
18x10mm
Q=55
Figure 11. nRF402 application Schematic
Component
C1
C2
C3
C4
C5
C6
C7
C8
L1
R1
R2
R3
X1
Description
NP0 ceramic chip capacitor, (Crystal oscillator)
NP0 ceramic chip capacitor, (Crystal oscillator)
X7R ceramic chip capacitor, (Supply decoupling)
NP0 ceramic chip capacitor, (Supply decoupling)
X7R ceramic chip capacitor, (Supply decoupling)
NP0 ceramic chip capacitor, (Supply decoupling)
NP0 ceramic chip capacitor, (Antenna tuning)
NP0 ceramic chip capacitor, (Antenna tuning)
VCO inductor, Q>45 @ 433 MHz (See table 6.)
1/8W chip resistor, (Crystal oscillator)
1/8W chip resistor, (Antenna Q reduction)
1/8W chip resistor, (Transmitter power setting)
Crystal
Size
0603
0603
0603
0603
1206
0603
0603
0603
0603
0603
0603
0603
-
Value
22
22
4.7
100
2.2
100
5.6
10
22
1.0
18
22
4.000
Tolerance
±0.25
±0.25
±2%
Units
pF
pF
nF
pF
µF
pF
pF
pF
nH
MΩ
kΩ
kΩ
MHz
Table 8 Recommended External Components
Nordic VLSI ASA
Revision: 2.1
Vestre Rosten 81, N-7075 Tiller, Norway -
Page 12 of 16
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February 2000