Power To Voltage Conversion Table
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1Power to Voltage Conversion Table
1
1
P (dBm)
P (mW)
V
Vp (V)
Vpp (V)
P (dBm)
P (mW)
V
Vp (V)
Vpp (V)
(V)
(V)
RMS
RMS
‐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, V
= V
P
RMS.
No
te: The converte voltages in the above table are for R = 50 Ω
d
P
10 log
P
(dBm)=
10
(mW)
P
( P
/10)
=
10
(dBm)
(mW)
P
2
3
[V
]
* 1
0
/R
(mW) =
RMS
(V)
V
V
V
V
= V
V
= 0.707 * V
RMS
P
P
RMS
P
V
R / 10
3
=
(P
)
RMS (V)
(mW) *
V
V
=
*
for inusoid – Fig. a.
s
2
P
RM
S,
V
= V
fo
r square wave – Fig. b.
P
RMS,
V
= 2 * V
P‐P
P
Fig. a. Sinusoidal signal
Fig. b. Square wave signal
215 Vineyard Court, Morgan Hill, CA 95037 | Ph: 408.778.4200 | Fax 408.778.4300 |
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