SX1242 Просмотр технического описания (PDF) - Semtech Corporation
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SX1242 Datasheet PDF : 14 Pages
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ADVANCED COMMUNICATIONS & SENSING
4.3. Reference Design PCB Layout
The SX1242 reference design PCB layout is illustrated below:
SX1242
Integrated Transmitter IC
DATASHEET
Figure 6. Reference Design PCB Layout
4.4. Reference Design BOM
The following table summarizes the reference design BOM:
Table 7 Reference Design BOM
Re fDe s
U1
Q1
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
L1
L2
L3
MPN
S X 1242I S ET RT
-
-
-
-
-
-
-
-
-
-
-
LQG15- or equivalent
LQG15- or equivalent
LQG15- or equivalent
P a cka ge
SO8
HC49
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
Value
S X1242
26 MHz
100pF
12pF
100nF
100pF
4.7pF
12pF
2.2pF
100nF
1uF
Zero ohm
120nH
39nH
22n
Qty De scription
1 RF transmitter IC
1 Crystal 26 MHz CL=15 pF
1 Capacitor NPO (+/-5% )
1 Capacitor NPO (+/-5% )
1 Capacitor X7R (+/-5% )
1 Capacitor NPO (+/-5% )
1 Capacitor NPO (+/-0.25pF)
1 Capacitor NPO (+/-5% )
1 Capacitor NPO (+/-0.25pF)
1 Capacitor X7R (+/-5% )
1 Capacitor X5R (+/-5% )
1 Resistor Zero Ohm
1 Multilayer chip inductor (+/-5% )
1 Multilayer chip inductor (+/-5% )
1 Multilayer chip inductor (+/-5% )
SX1242, Rev 1, November 2010
©2010 Semtech Corp.
Page 10
www.semtech.com
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