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ADE7932 数据表(PDF) 26 Page - Analog Devices

部件名 ADE7932
功能描述  Isolated Energy Metering Chipset for Polyphase Shunt Meters
PDF  125 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

ADE7932 数据表(HTML) 26 Page - Analog Devices

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ADE7978/ADE7933/ADE7932/ADE7923
Data Sheet
Rev. D | Page 26 of 125
FUNDAMENTAL ENERGY AND RMS LINEARITY WITH FIFTH HARMONIC OVER SUPPLY AND TEMPERATURE
Figure 20 through Figure 25 were generated using the following conditions: fundamental voltage component in phase with fifth harmonic;
current with a 50 Hz component that has variable amplitudes from 100% of full scale down to 0.033% of full scale and a fifth harmonic with
a constant amplitude of 17% of full scale; power factor equal to 1 or 0 on the fundamental and fifth harmonic. Figure 20, Figure 21, Figure 23, and
Figure 24 were generated using a voltage with a 50 Hz component that has an amplitude of 50% of full scale and a fifth harmonic with an
amplitude of 5% of full scale. Figure 22 and Figure 25 were generated using a voltage with a 50 Hz component that has variable amplitudes
from 100% of full scale down to 0.033% of full scale and a fifth harmonic with an amplitude of 5% of full scale.
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 20. Fundamental 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 (%)
VDD = 2.97V
VDD = 3.30V
VDD = 3.63V
Figure 21. Fundamental 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
0.1
1
10
100
PERCENTAGE OF FULL-SCALE CURRENT (%)
TA = –40°C
TA = +25°C
TA = +85°C
Figure 22. Fundamental Current RMS 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 23. Fundamental 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
0.01
0.1
1
10
100
PERCENTAGE OF FULL-SCALE CURRENT (%)
VDD = 2.97V
VDD = 3.30V
VDD = 3.63V
Figure 24. Fundamental 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 VOLTAGE (%)
TA = –40°C
TA = +25°C
TA = +85°C
Figure 25. Fundamental Voltage RMS Error as a Percentage of Reading
over Temperature, PF = 1



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