Tx Power Control For 2.4 Ghz Band - Texas Instruments SimpleLink CC3135MOD Manual

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5.6

TX Power Control for 2.4 GHz Band

The CC3135MOD has several options for modifying the output power of the device when required. For the
2.4 GHz band it is possible to lower the overall output power at a global level using the global TX power
level setting. In addition, the 2.4 GHz band allows the user to enter additional back-offs
region (2) and modulation rates
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Wi-Fi and Internet-on-a chip™ Solution ImageCreator and Programming Tool User's Guide
details).
Figure 5-1, Figure
modulations of 1 DSSS, 6 OFDM, and 54 OFDM, respectively.
In Figure 5-1, the area enclosed in the circle represents a significant reduction in current during transition
from TX power level 3 to level 4. In the case of lower range requirements (14-dBm output power), TI
recommends using TX power level 4 to reduce the current.
Figure 5-1. TX Power and IBAT vs TX Power Level Settings (1 DSSS)
(1) The back-off range is between -6 dB to +6 dB in 0.25 dB increments.
(2) FCC, IC/ISED, ETSI/CE (Europe), and MIC (Japan) are supported.
(3) Back-off rates are grouped into 11b rates, high modulation rates (MCS7, 54 OFDM and 48 OFDM), and lower modulation rates (all other
rates).
(4) Please note that there will be a delta between the CC3235MODx module and CC3235x IC's TX power levels.
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(3) (4) , via Image creator (see the
5-2, and Figure 5-3 show TX Power and IBAT versus TX power level settings for
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Specifications 19