
MRF49XA
4.5
4.5.1
MRF49XA Schematic and Bill of
Materials
SCHEMATIC
FIGURE 4-5:
MRF49XA SCHEMATIC
+3.3V
RSSIO
C1
C2
0.01 uF
C3
2.2 uF
6.3V
C4
1000 pF
+3.3V
INT/DIO
U1
L1
MRF49XA
C5
C6
SCK
SDO
IRO
SCK RSSIO
SDO RFN
IRO RFP
FSK/DATA/ FSEL VSS
SDI
__
CS
__
__
FSEL
FINT
TP1
1
2
3
4
5
6
7
89
__
SDI INT/DIO
__
CS VDD
__
___
____
RCLKOUT/FCAP/FINT RESET
CLKOUT RFXTL/EXTREF
16
15
14
13
12
11
10
L2
L3
J1
50 Ω ANT
CLK
TP2
GND
___
RESET
X1
10 MHz
C7
Freq.
433 MHz
868 MHz
915 MHz
C1
220 pF
47 pF
33 pF
L1
390 nH
100 nH
100 nH
L2
33 nH
8.2 nH
8.2 nH
L3
47 nH
22 nH
22 nH
C5
2.7 pF
1.2 pF
1.2 pF
C6
68 pF
27 pF
27 pF
C7
5.1 pF
2.7 pF
2.7 pF
DS70590C-page 76
Preliminary
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