CC2510F16 Datasheet, PDF (207/244 Pages) Texas Instruments – Low-Power SoC (System-on-Chip) with MCU, Memory, 2.4 GHz RF Transceiver, and USB Controller

13.17.7 Low Cost Systems
A differential antenna will eliminate the need
for a balun (see Figure 10, Figure 11, and
Figure 12). The CC25XX Folded Dipole
reference design [3] contains schematics and
layout files for a CC2500EM with a folded
dipole PCB antenna. This antenna design can
also be used by the CC2510Fx/CC2511Fx to
provide a low cost system. Please see DN004
[10] for more details on this design.
A HC-49 type SMD crystal is used in the
CC2510EM reference design [1]. Note that the
crystal package strongly influences the price.
In a size constrained PCB design a smaller,
but more expensive, crystal may be used.
Antenna
CC2510Fx / CC2511Fx
13.17.8 Battery Operated Systems
In low power applications, PM2 or PM3 should
be used when the CC2510Fx/CC2511Fx is not
active. The Sleep Timer can be used in PM2.
13.17.9 Increasing Output Power
In some applications it may be necessary to
extend the link range. Adding an external
power amplifier is the most effective way of
doing this.
The power amplifier should be inserted
between the antenna and the balun, and two.
T/R switches are needed to disconnect the PA
in RX mode. See Figure 60
Filter
PA
Balun
CC2510Fx /
CC2511Fx
T/R
switch
T/R
switch
Figure 60: Block Diagram of CC2510Fx/CC2511Fx Usage with External Power Amplifier
SWRS055F
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