ADE7761
SPECIFICATIONS
VDD = 5 V 5%, AGND = DGND = 0 V, on-chip reference, on-chip oscillator, TMIN to TMAX = –40°C to +85°C.
Table 1.
Parameter
Value
Unit
Test Conditions/Comments
ACCURACY1
Measurement Error2
0.1
% of reading, typ
Over a dynamic range of 500 to 1
Phase Error between Channels
(PF = 0.8 Capacitive)
(PF = 0.5 Inductive)
0.05
0.05
Degrees, max
Degrees, max
Phase lead 37°
Phase lag 60°
AC Power Supply Rejection2
Output Frequency Variation
DC Power Supply Rejection2
Output Frequency Variation
FAULT DETECTION2, 3
0.01
0.01
%, typ
%, typ
V1A = V1B = V2P = 100 mV rms
V1A = V1B = V2P = 100 mV rms
See the Fault Detection section
Fault Detection Threshold
Inactive Input <> Active Input
Input Swap Threshold
Inactive Input <> Active Input
Accuracy Fault Mode Operation
V1A Active, V1B = AGND
V1B Active, V1A = AGND
Fault Detection Delay
6.25
6.25
%, typ
(V1A or V1B active)
(V1A or V1B active)
% of larger, typ
0.1
0.1
3
% of reading, typ
% of reading, typ
Seconds, typ
Over a dynamic range of 500 to 1
Over a dynamic range of 500 to 1
Swap Delay
3
Seconds, typ
MISSING NEUTRAL MODE2, 4
Missing Neutral Detection Threshold
V2P − V2N
See the Missing Neutral Detection section
59.4
mV peak, min
Accuracy Missing Neutral Mode
V1A Active, V1B = V2P = AGND
V1B Active, V1A = V2P = AGND
Missing Neutral Detection Delay
ANALOG INPUTS
0.1
0.1
3
% of reading, typ
% of reading, typ
Seconds, typ
Over a dynamic range of 500 to 1
Over a dynamic range of 500 to 1
V1A − V1N, V1B − V1N, V2P − V2N
Differential input
Differential input MISCAL − V2N
Maximum Signal Levels
660
660
400
7
10
4
mV peak, max
mV peak, max
kΩ, min
kHz, typ
mV, max
Input Impedance (DC)
Bandwidth (−3 dB)
ADC Offset Error2
Uncalibrated error, see the Terminology section for details
External 2.5 V reference
Gain Error
%, typ
REFERENCE INPUT
REFIN/OUT Input Voltage Range
2.7
2.3
4
V, max
V, min
kΩ, min
pF, max
2.5 V + 8%
2.5 V − 8%
Input Impedance
Input Capacitance
10
ON-CHIP REFERENCE
Reference Error
Temperature Coefficient
Current Source
200
30
20
mV, max
ppm/°C, typ
µA, min
ON-CHIP OSCILLATOR
Oscillator Frequency
Oscillator Frequency Tolerance
450
12
30
kHz
% of reading, typ
ppm/°C, typ
Temperature Coefficient
See footnotes on next page.
Rev. A | Page 4 of 28
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