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ST-PLC-AFE Datasheet(PDF) 42 Page - STMicroelectronics |
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ST-PLC-AFE Datasheet(HTML) 42 Page - STMicroelectronics |
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42 / 58 page ![]() Application information ST-PLC-AFE 42/58 DocID028727 Rev 1 Figure 43. Thermal resistance as a function of PCB area Figure 44. Thermal resistance as a function of copper thickness 10.2.3 Reducing supply voltage from the power amplifier The system architecture has to take into account that power dissipated in transmission is strongly linked to the supply voltage level of the PA. For example, in differential mode with a 50 % Tx duty cycle, the power dissipated with 2 Ω load is 2.28 W when PA_VDD = 11 V and 1.66 W when PA_VDD = 8 V. Note that this power corresponds to the current being drawn out of the PA power supply voltage multiplied by its supply voltage. |
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