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ST-PLC-AFE Scheda tecnica(PDF) 42 Page - STMicroelectronics

Il numero della parte ST-PLC-AFE
Spiegazioni elettronici  Power-line communication, analog front-end
PDF  58 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST-PLC-AFE Scheda tecnica(HTML) 42 Page - STMicroelectronics

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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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