CC2550RSTR Datasheet, PDF (11/61 Pages) Texas Instruments – Low-Cost Low-Power 2.4 GHz RF Transmitter

CC2550
Component
C41
C51/C71
C101/C111
C102/C112
C103/C104
L101/L111
L102
R141
XTAL
Description
Decoupling capacitor for on-chip voltage regulator to digital part
Crystal loading capacitors, see Section 22 on page 32 for details
RF balun DC blocking capacitors
RF balun/matching capacitors
RF LC filter/matching capacitors
RF balun/matching inductors (inexpensive multi-layer type)
RF LC filter inductor (inexpensive multi-layer type)
Resistor for internal bias current reference
26-27 MHz crystal, see Section 22 on page 32 for details
Table 12: Overview of External Components (excluding supply decoupling capacitors)
1.8V-3.6V power supply
SI
R141
SCLK
SO
(GDO1)
C41
1 SCLK
AVDD 12
CC2550 ^{2 SO (GDO1)}
RF_N 11
3 DVDD _{DIE ATTACH PAD:RF_P} 10
4DCOUPL
CSn 9
GDO0
(optional)
CSn
L111
C111
C112
C101
L101
C102
Antenna
(50 Ohm)
L102
C103 C104
Alternative:
Folded dipole PCB
antenna (no external
components needed)
XTAL
C51
C71
Figure 3: Typical Application and Evaluation Circuit (excluding supply decoupling capacitors)
SWRS039B
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