ADE7761
SPECIFICATIONS
V
DD
= 5 V ± 5%, AGND = DGND = 0 V, on-chip reference, on-chip oscillator, T
MIN
to T
MAX
= –40°C to +85°C.
Table 1.
Parameter
ACCURACY
Measurement Error
Phase Error between Channels
(PF = 0.8 Capacitive)
(PF = 0.5 Inductive)
AC Power Supply Rejection
Output Frequency Variation
DC Power Supply Rejection
Output Frequency Variation
FAULT DETECTION
Fault Detection Threshold
Inactive Input <> Active Input
Input Swap Threshold
Inactive Input <> Active Input
Accuracy Fault Mode Operation
V
1A
Active, V
1B
= AGND
V
1B
Active, V
1A
= AGND
Fault Detection Delay
Swap Delay
MISSING NEUTRAL MODE
Missing Neutral Detection Threshold
V
2P
− V
2N
Accuracy Missing Neutral Mode
V
1A
Active, V
1B
= V
2P
= AGND
V
1B
Active, V
1A
= V
2P
= AGND
Missing Neutral Detection Delay
ANALOG INPUTS
Maximum Signal Levels
Input Impedance (DC)
Bandwidth (−3 dB)
ADC Offset Error
Gain Error
REFERENCE INPUT
REF
IN/OUT
Input Voltage Range
Input Impedance
Input Capacitance
ON-CHIP REFERENCE
Reference Error
Temperature Coefficient
Current Source
ON-CHIP OSCILLATOR
Oscillator Frequency
Oscillator Frequency Tolerance
Temperature Coefficient
See footnotes on next page.
Value
0.1
±0.05
±0.05
0.01
0.01
Unit
% of reading, typ
Degrees, max
Degrees, max
%, typ
%, typ
Test Conditions/Comments
Over a dynamic range of 500 to 1
Phase lead 37°
Phase lag 60°
V
1A
= V
1B
= V
2P
= ±100 mV rms
V
1A
= V
1B
= V
2P
= ±100 mV rms
See the Fault Detection section
(V
1A
or V
1B
active)
(V
1A
or V
1B
active)
Over a dynamic range of 500 to 1
Over a dynamic range of 500 to 1
6.25
6.25
0.1
0.1
3
3
%, typ
% of larger, typ
% of reading, typ
% of reading, typ
Seconds, typ
Seconds, typ
See the Missing Neutral Detection section
59.4
0.1
0.1
3
±660
660
400
7
10
±4
2.7
2.3
4
10
±200
30
20
450
±12
30
mV peak, min
% of reading, typ
% of reading, typ
Seconds, typ
mV peak, max
mV peak, max
kΩ, min
kHz, typ
mV, max
%, typ
V, max
V, min
kΩ, min
pF, max
mV, max
ppm/°C, typ
µA, min
kHz
% of reading, typ
ppm/°C, typ
Over a dynamic range of 500 to 1
Over a dynamic range of 500 to 1
V
1A
− V
1N
, V
1B
− V
1N
, V
2P
− V
2N
Differential input
Differential input MISCAL − V
2N
Uncalibrated error, see the Terminology section for details
External 2.5 V reference
2.5 V + 8%
2.5 V − 8%
Rev. A | Page 4 of 28
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