CC1150-RTR1 datasheet(41/67 Pages) TI

41 / 67 page

CC1150

SWRS037A

Page 41 of 60

24.4

Data Burst Transmissions

The high maximum data rate of

CC1150 opens

up for burst transmissions. A low average data

rate link (e.g. 10 kBaud), can be realized using

a higher over-the-air data rate. Buffering the

data and transmitting in bursts at high data

rate (e.g. 500 kBaud) will reduce the time in

active mode, and hence also reduce the

average current consumption significantly.

Reducing the time in active mode will reduce

the likelihood of collisions with other systems

in the same frequency range.

24.5

Continuous Transmissions

In data streaming applications the

CC1150

opens up for continuous transmissions at 500

kBaud effective data rate. As the modulation is

done with a closed loop PLL, there is no

limitation in the length of a transmission (open

loop modulation used in some transceivers

often prevents this kind of continuous data

streaming and reduces the effective data rate).

24.6

Low Cost Systems

As the

CC1150 provides 500 kBaud multi-

channel performance without any external

filters, a very low cost system can be made. A

HC-49 type SMD crystal is used in the

CC1150EM reference design ([1] and [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.

24.7

Battery Operated Systems

In low power applications, the SLEEP state

should be used when the

CC1150 is not active.

24.8

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 as shown

in Figure 23.

Figure 23 Block Diagram of

CC1150 Usage with External Power Amplifier

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