Datasheet

Data Sheet ADE7763
Rev. C | Page 13 of 56
–0.5
–0.4
–0.3
–0.2
–0.1
0
0.1
0.2
0.3
0.4
0.5
ERROR (%)
FULL-SCALE CURRENT (%)
0.1 101 100
04481-A-081
GAIN = 8
INTEGRATOR ON
INTERNAL REFERENCE
5.25V
5.00V
4.75V
Figure 18. Active Energy Error as a Percentage of Reading (Gain = 8)
over Power Supply with Internal Reference and Integrator On
–0.5
–0.4
–0.3
–0.2
–0.1
0
0.1
0.2
0.3
0.4
0.5
ERROR (%)
FULL-SCALE CURRENT (%)
0.1 101 100
04481-A-019
GAIN = 8
INTEGRATOR ON
INTERNAL REFERENCE
PF = 0.5
PF = 1
Figure 19. IRMS Error as a Percentage of Reading (Gain = 8)
with Internal Reference and Integrator On
0
2
4
6
8
10
HITS
12
14
16
–15 –10 –5 0 5 10 15 20
CH1 OFFSET (0p5V_1X) (mV)
04481-A-021
Figure 20. Channel 1 Offset (Gain = 1)
V
DD
10F
10F
10F
100nF 100nF
AVDD DVDD
RESET
DIN
DOUT
SCLK
CS
CLKOUT
CLKIN
IRQ
SAG
ZX
CF
AGND DGND
V1P
V1N
V2N
V2P
REF
IN/OUT
U1
ADE7763
TO SPI BUS
(USED ONLY FOR
CALIBRATION)
22pF
22pF
Y1
3.58MHz
NOT CONNECTED
U3
PS2501-1
I
di/dt CURRENT
SENSOR
100 1k
33nF 33nF
100 1k
33nF
33nF
1k
33nF
600k
110V
1k
33nF
100nF
CHANNEL 1 GAIN = 8
CHANNEL 2 GAIN = 1
TO
FREQUENCY
COUNTER
04481-A-022
Fi
g
ure 21. Test Circuit for Performance Curves with Inte
g
rator On
CT TURN RATIO = 1800:1
CHANNEL 2 GAIN = 1
RB
10
1.21
GAIN 1 (CH1)
1
8
NOT CONNECTED
V
DD
10F10F
100nF 100nF
DIN
DOUT
SCLK
CS
CLKOUT
CLKIN
IRQ
SAG
ZX
CF
AGND DGND
V1P
V1N
V2N
V2P
REF
IN/OUT
U1
ADE7763
TO SPI BUS
(USED ONLY FOR
CALIBRATION)
22pF
22pF
Y1
3.58MHz
U3
PS2501-1
I
CURRENT
TRANSFORMER
1k
33nF
1k
33nF
1k
33nF
600k
RB
110V
1k
33nF
10F
100nF
TO
FREQUENCY
COUNTER
04481-A-023
AVDD DVDD
RESET
Figure 22. Test Circuit for Performance Curves with Integrator Off