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ADE7768
SPECIFICATIONS
V DD = 5 V ± 5%, AGND = DGND = 0 V, on-chip reference, RCLKIN = 6.2 kΩ, 0.5% ± 50 ppm/°C, T MIN to T MAX = ?40°C to +85°C,
unless otherwise noted.
Table 1.
Parameter
Value
Unit
Test Conditions/Comments
ACCURACY 1 , 2
Measurement Error on Channel V1
0.1
% reading typ
Channel V2 with full-scale signal (±165 mV),
25°C over a dynamic range 500 to 1,
line frequency = 45 Hz to 65 Hz
Phase Error 1 Between Channels
V1 Phase Lead 37° (PF = 0.8 Capacitive)
V1 Phase Lag 60° (PF = 0.5 Inductive)
AC Power Supply Rejection 1
±0.1
±0.1
Degrees (°) max
Degrees (°) max
Output Frequency Variation (CF)
0.2
% reading typ
S0 = S1 = 1, V1 = 21.2 mV rms, V2 = 116.7 mV rms @
50 Hz, ripple on V DD of 200 mV rms @ 100 Hz
DC Power Supply Rejection 1
Output Frequency Variation (CF)
±0.3
% reading typ
S0 = S1 = 1, V1 = 21.2 mV rms, V2 = 116.7 mV rms,
V DD = 5 V ± 250 mV
ANALOG INPUTS
See the Analog Inputs section
Channel V1 Maximum Signal Level
Channel V2 Maximum Signal Level
Input Impedance (DC)
Bandwidth (–3 dB)
ADC Offset Error 1, 2
±30
±165
320
7
±18
mV max
mV max
kΩ min
kHz nominal
mV max
V1P and V1N to AGND
V2P and V2N to AGND
OSC = 450 kHz, RCLKIN = 6.2 kΩ, 0.5% ± 50 ppm/°C
OSC = 450 kHz, RCLKIN = 6.2 kΩ, 0.5% ± 50 ppm/°C
See the Terminology and the Typical Performance
Characteristics sections
Gain Error 1
±4
% ideal typ
External 2.5 V reference, V1 = 21.2 mV rms,
V2 = 116.7 mV rms
OSCILLATOR FREQUENCY (OSC)
Oscillator Frequency Tolerance 1
Oscillator Frequency Stability 1
450
±12
±30
kHz nominal
% reading typ
ppm/°C typ
RCLKIN = 6.2 kΩ, 0.5% ± 50 ppm/°C
REFERENCE INPUT
REF IN/OUT Input Voltage Range
Input Capacitance
ON-CHIP REFERENCE
Reference Error
Temperature Coefficient
2.65
2.25
10
±200
±20
V max
V min
pF max
mV max
ppm/°C typ
2.45 V nominal
2.45 V nominal
2.45 V nominal
LOGIC INPUTS 3
SCF, S0, S1
Input High Voltage, V INH
Input Low Voltage, V INL
Input Current, I IN
Input Capacitance, C IN
2.4
0.8
±1
10
V min
V max
μA max
pF max
V DD = 5 V ± 5%
V DD = 5 V ± 5%
Typically 10 nA, V IN = 0 V to V DD
LOGIC OUTPUTS 3
F1 and F2
Output High Voltage, V OH
Output Low Voltage, V OL
4.5
0.5
V min
V max
I SOURCE = 10 mA, V DD = 5 V, I SINK = 10 mA, V DD = 5 V
CF
Output High Voltage, V OH
Output Low Voltage, V OL
Frequency Output Error 1, 2 (CF)
4
0.5
±10
V min
V max
% ideal typ
I SOURCE = 5 mA, V DD = 5 V, I SINK = 5 mA, V DD = 5 V
External 2.5 V reference, V1 = 21.2 mV rms,
V2 = 116.7 mV rms
Rev. A | Page 3 of 20
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