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ADE7978 Datasheet(PDF) 21 Page - Analog Devices

Part # ADE7978
Description  Isolated Energy Metering Chipset for Polyphase Shunt Meters
PDF  120 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADE7978 Datasheet(HTML) 21 Page - Analog Devices

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Data Sheet
ADE7978/ADE7933/ADE7932
Rev. 0 | Page 21 of 120
TYPICAL PERFORMANCE CHARACTERISTICS
Figure 12 through Figure 17 were generated using the following conditions: sinusoidal voltage with an amplitude of 50% of full scale and a
frequency of 50 Hz; sinusoidal current with variable amplitudes from 100% of full scale down to 0.033% of full scale and with a frequency
of 50 Hz; offset compensation executed.
1.5
–1.5
–1.0
–0.5
0
0.5
1.0
0.01
0.1
1
10
100
PERCENTAGE OF FULL-SCALE CURRENT (%)
TA = –40°C
TA = +25°C
TA = +85°C
Figure 12. Total Active Energy Error as a Percentage of Reading
over Temperature, PF = 1
1.5
–1.5
–1.0
–0.5
0
0.5
1.0
0.01
0.1
1
10
100
PERCENTAGE OF FULL-SCALE CURRENT (%)
TA = –40°C
TA = +25°C
TA = +85°C
Figure 13. Total Reactive Energy Error as a Percentage of Reading
over Temperature, PF = 0
1.5
–1.5
–1.0
–0.5
0
0.5
1.0
0.1
1
10
100
PERCENTAGE OF FULL-SCALE CURRENT (%)
TA = –40°C
TA = +25°C
TA = +85°C
Figure 14. Apparent Energy Error as a Percentage of Reading
over Temperature, PF = 1
1.5
–1.5
–1.0
–0.5
0
0.5
1.0
0.01
0.1
1
10
100
PERCENTAGE OF FULL-SCALE CURRENT (%)
VDD = 2.97V
VDD = 3.30V
VDD = 3.63V
Figure 15. Total Active Energy Error as a Percentage of Reading
over Power Supply, PF = 1, TA = 25°C
1.5
–1.5
–1.0
–0.5
0
0.5
1.0
0.01
0.1
1
10
100
PERCENTAGE OF FULL-SCALE CURRENT (%)
VDD = 2.97V
VDD = 3.30V
VDD = 3.63V
Figure 16. Total Reactive Energy Error as a Percentage of Reading
over Power Supply, PF = 0, TA = 25°C
1.5
–1.5
–1.0
–0.5
0
0.5
1.0
0.1
1
10
100
PERCENTAGE OF FULL-SCALE CURRENT (%)
VDD = 2.97V
VDD = 3.30V
VDD = 3.63V
Figure 17. Apparent Energy Error as a Percentage of Reading
over Power Supply, PF = 1, TA = 25°C



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