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Power To Voltage PDF

The document contains a power to voltage conversion table that lists different power levels in decibels (dBm) and milliwatts (mW) along with the corresponding root mean square (RMS) and peak (Vp) voltages. It provides conversion formulas to calculate voltage from power and resistance. The table is for a load resistance of 50 ohms and shows that higher power levels correspond to higher voltages. Peak voltage is defined as either twice the RMS voltage for sinusoidal signals or equal to the RMS voltage for square waves.

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Afia Bashir
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404 views1 page

Power To Voltage PDF

The document contains a power to voltage conversion table that lists different power levels in decibels (dBm) and milliwatts (mW) along with the corresponding root mean square (RMS) and peak (Vp) voltages. It provides conversion formulas to calculate voltage from power and resistance. The table is for a load resistance of 50 ohms and shows that higher power levels correspond to higher voltages. Peak voltage is defined as either twice the RMS voltage for sinusoidal signals or equal to the RMS voltage for square waves.

Uploaded by

Afia Bashir
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Power 

to Voltage Conversion Table 
P (dBm)  P (mW)  VRMS (V)  Vp (V)1  Vpp (V)  P (dBm)  P (mW)  VRMS (V)  Vp (V) 1  Vpp (V) 

‐30  0.001  0.007  0.010  0.020  0  1.000  0.224  0.316  0.632 


‐29  0.001  0.008  0.011  0.022  1  1.259  0.251  0.355  0.710 
‐28  0.002  0.009  0.013  0.025  2  1.585  0.282  0.398  0.796 
‐27  0.002  0.010  0.014  0.028  3  1.995  0.316  0.447  0.893 
‐26  0.003  0.011  0.016  0.032  4  2.512  0.354  0.501  1.002 
‐25  0.003  0.013  0.018  0.036  5  3.162  0.398  0.562  1.125 
‐24  0.004  0.014  0.020  0.040  6  3.981  0.446  0.631  1.262 
‐23  0.005  0.016  0.022  0.045  7  5.012  0.501  0.708  1.416 
‐22  0.006  0.018  0.025  0.050  8  6.310  0.562  0.794  1.589 
‐21  0.008  0.020  0.028  0.056  9  7.943  0.630  0.891  1.783 
‐20  0.010  0.022  0.032  0.063  10  10.000  0.707  1.000  2.000 
‐19  0.013  0.025  0.035  0.071  11  12.589  0.793  1.122  2.244 
‐18  0.016  0.028  0.040  0.080  12  15.849  0.890  1.259  2.518 
‐17  0.020  0.032  0.045  0.089  13  19.953  0.999  1.413  2.825 
‐16  0.025  0.035  0.050  0.100  14  25.119  1.121  1.585  3.170 
‐15  0.032  0.040  0.056  0.112  15  31.623  1.257  1.778  3.557 
‐14  0.040  0.045  0.063  0.126  16  39.811  1.411  1.995  3.991 
‐13  0.050  0.050  0.071  0.142  17  50.119  1.583  2.239  4.477 
‐12  0.063  0.056  0.079  0.159  18  63.096  1.776  2.512  5.024 
‐11  0.079  0.063  0.089  0.178  19  79.433  1.993  2.818  5.637 
‐10  0.100  0.071  0.100  0.200  20  100.000  2.236  3.162  6.325 
‐9  0.126  0.079  0.112  0.224  21  125.893  2.509  3.548  7.096 
‐8  0.158  0.089  0.126  0.252  22  158.489  2.815  3.981  7.962 
‐7  0.200  0.100  0.141  0.283  23  199.526  3.159  4.467  8.934 
‐6  0.251  0.112  0.158  0.317  24  251.189  3.544  5.012  10.024 
‐5  0.316  0.126  0.178  0.356  25  316.228  3.976  5.623  11.247 
‐4  0.398  0.141  0.200  0.399  26  398.107  4.462  6.310  12.619 
‐3  0.501  0.158  0.224  0.448  27  501.187  5.006  7.079  14.159 
‐2  0.631  0.178  0.251  0.502  28  630.957  5.617  7.943  15.887 
‐1  0.794  0.199  0.282 0.564 29 794.328 6.302  8.913  17.825
0  1.000  0.224  0.316  0.632  30  1000.000  7.071  10.000  20.000 
1
For Square wave signal, VP = VRMS. 
Note: The converted voltages in the above table are for R = 50 Ω 
 
P(dBm)= 10 log10 P(mW)          
(P(dBm)/10)  
P(mW) = 10 
P(mW) = [VRMS (V)]2 * 103/R        
V VP V VRMS = VP
VRMS = 0.707 * VP
VRMS (V) =  (P(mW) * R / 10 )  3
 

VP =  2  * VRMS, for sinusoid – Fig. a. 
VP = VRMS, for square wave – Fig. b. 
VP‐P = 2 * VP 
Fig. a. Sinusoidal signal Fig. b. Square wave signal
 

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