CC2592

SWRS159 – FEBRUARY 2014

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7

Controlling the Output Power from CC2592

The output power of the CC2592 device is controlled by controlling the input power. The CC2592 PA is

designed to work in compression (class AB).

Driving the CC2592 device too far into saturation might result in spurious emissions and harmonics above

regulatory limits. This caution should especially be considered for systems targeting a wide operating

temperature range, where a combination of low temperature, low supply voltage, and a transceiver that

increases output power (drive level) at low temperature, can result in high spurious emissions.

Figure 7-1 shows the maximum recommended drive level versus temperature and supply voltage.

Figure 7-1. Maximum Recommended Drive Level

8

Input Levels on Control Terminals

The three digital control terminals (PA_EN, LNA_EN, and HGM) have built-in level-shifting functionality,

meaning that if the CC2592 device operates off a 3.7-V supply voltage, the control terminals still sense

1.6- to 1.8-V signals as a logical 1. However, the input voltages should not have a logical 1 level that is

higher than the supply.

12

Input Levels on Control Terminals

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