R251

C171

C161

C301

CC2543

DIE ATTACH PAD

Antenna

(50

)

W

S0383-08

1

2

3

4

5

6

7

8

17

18

19

20

21

22

23

24

Power Supply Decoupling Capacitors are Not Shown

Digital I/O Not Connected

VDD

P1_3

VDD

VSS

RF_N

RF_P

VSS

VDD

XOSC_Q2

P2_1/DD

P2_0

P0_7

P0_6

P0_5

P0_4

P0_3

2-V–3.6-V

Power Supply

CC2543

www.ti.com

SWRS107B – APRIL 2012 – REVISED MAY 2012

APPLICATION INFORMATION

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.

Figure 19. CC2543 Application Circuit

Table 3. Overview of External Components (Excluding Balun, Crystal and Supply Decoupling Capacitors)

COMPONENT

DESCRIPTION

VALUE

C301

Decoupling capacitor for the internal 1.8V digital voltage regulator

1 µF

R251

Precision resistor ±1%, used for internal biasing

56 k

Ω

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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