Datasheet

Data Sheet ADE7880
Rev. A | Page 15 of 104
0.5
–0.5
–0.3
–0.1
0.1
0.3
0.01 0.1 1 10 100
ERROR (%)
PERCENTAGE OF FULL-SCALE CURRENT (%)
V
DD
= 2.97V
V
DD
= 3.30V
V
DD
= 3.63V
10193-112
Figure 19. Fundamental Reactive Energy Error as Percentage of Reading
(Gain = +1) over Power Supply with Internal Reference and Integrator Off
0.5
–0.5
–0.3
–0.1
0.1
0.3
0.01 0.1 1 10 100
ERROR (%)
PERCENTAGE OF FULL-SCALE CURRENT (%)
+25°C, PF = 1.0
–40°C, PF = 1.0
+85°C, PF = 1.0
10193-113
Figure 20. Fundamental Reactive Energy Error as Percentage of Reading
(Gain = +16) over Temperature with Internal Reference and Integrator On
0.5
–0.5
–0.3
–0.1
0.1
0.3
0.01 0.1 1 10 100
ERROR (%)
PERCENTAGE OF FULL-SCALE CURRENT (%)
+25°C, PF = 1.0
–40°C, PF = 1.0
+85°C, PF = 1.0
10193-114
Figure 21. I RMS Error as Percentage of Reading (Gain = +1) over
Temperature with Internal Reference and Integrator Off
0.5
–0.5
–0.3
–0.1
0.1
0.3
0.01 0.1 1 10 100
ERROR (%)
PERCENTAGE OF FULL-SCALE CURRENT (%)
+25°C, PF = 1.0
–40°C, PF = 1.0
+85°C, PF = 1.0
10193-115
Figure 22. V RMS Error as a Percentage of Reading (Gain = +1) over
Temperature with Internal Reference
5
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
066057545148454239363330272421181512963
GAIN ERROR
(% ERROR RELATIVE TO FUNDAMENTAL)
HARMONIC ORDER (55Hz FUNDAMENTAL)
3
10193-116
Figure 23. Harmonic I RMS Error as a Percentage of Reading over Harmonic
Order, 63 Harmonics, 55 Hz Fundamental, 30 Averages per Reading, 750 ms
Settling time, 125 μs Update Rate
6
–6
–4
–2
0
2
4
0.01 0.1 1 10 100
MEASUREMENT ERROR (% of Reading)
PERCENTAGE OF FULL-SCALE CURRENT (%)
10193-117
Figure 24. Harmonic I RMS Error as a Percentage of Reading (Gain = +1),
51 Harmonics, 55 Hz Fundamental, Single Reading, 750 ms Settling Time