CC2543 Datasheet, PDF (21/29 Pages) Texas Instruments – System-on-Chip for 2.4-GHz RF Applications

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APPLICATION INFORMATION
CC2543
SWRS107B – APRIL 2012 – REVISED MAY 2012
Few external components are required for the operation of the CC2543. A typical application circuit is shown in
Figure 19. For suggestions of component values other than those listed in Table 3, see reference design
CC2543EM. The performance stated in this data sheet is only valid for the CC2543EM reference design. To
obtain similar performance, the reference design should be copied as closely as possible.
2-V–3.6-V
Power Supply
C301
R251
1 P1_3
2 P2_1/DD
3 P2_0
4 P0_7
5 P0_6
6 P0_5
7 P0_4
8 P0_3
CC2543
DIE ATTACH PAD
VDD 24
VDD 23
VSS 22
RF_N 21
RF_P 20
VSS 19
VDD 18
XOSC_Q2 17
C171
Antenna
(50 W)
Power Supply Decoupling Capacitors are Not Shown
Digital I/O Not Connected
C161
Figure 19. CC2543 Application Circuit
S0383-08
Table 3. Overview of External Components (Excluding Balun, Crystal and Supply Decoupling Capacitors)
COMPONENT
C301
R251
DESCRIPTION
Decoupling capacitor for the internal 1.8V digital voltage regulator
Precision resistor ±1%, used for internal biasing
VALUE
1 µF
56 kΩ
Input/Output Matching
When using an unbalanced antenna such as a monopole, a balun should be used to optimize performance. The
balun can be implemented using low-cost discrete inductors and capacitors. See reference design, CC2543EM,
for recommended balun.
Copyright © 2012, Texas Instruments Incorporated
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