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ADE7768 Datasheet(PDF) 3 Page - Analog Devices

No. de Pieza. ADE7768
Descripción  Energy Metering IC with Integrated Oscillator and Positive Power Accumulation
Descarga  20 Pages
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Fabricante  AD [Analog Devices]
Página de inicio  http://www.analog.com
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ADE7768 Datasheet(HTML) 3 Page - Analog Devices

 
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ADE7768
Rev. A | Page 3 of 20
SPECIFICATIONS
VDD = 5 V ± 5%, AGND = DGND = 0 V, on-chip reference, RCLKIN = 6.2 kΩ, 0.5% ± 50 ppm/°C, TMIN to TMAX = −40°C to +85°C,
unless otherwise noted.
Table 1.
Parameter
Value
Unit
Test Conditions/Comments
ACCURACY1, 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 Error1 Between Channels
V1 Phase Lead 37° (PF = 0.8 Capacitive)
±0.1
Degrees (°) max
V1 Phase Lag 60° (PF = 0.5 Inductive)
±0.1
Degrees (°) max
AC Power Supply Rejection1
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 VDD of 200 mV rms @ 100 Hz
DC Power Supply Rejection1
Output Frequency Variation (CF)
±0.3
% reading typ
S0 = S1 = 1, V1 = 21.2 mV rms, V2 = 116.7 mV rms,
VDD = 5 V ± 250 mV
ANALOG INPUTS
See the Analog Inputs section
Channel V1 Maximum Signal Level
±30
mV max
V1P and V1N to AGND
Channel V2 Maximum Signal Level
±165
mV max
V2P and V2N to AGND
Input Impedance (DC)
320
kΩ min
OSC = 450 kHz, RCLKIN = 6.2 kΩ, 0.5% ± 50 ppm/°C
Bandwidth (–3 dB)
7
kHz nominal
OSC = 450 kHz, RCLKIN = 6.2 kΩ, 0.5% ± 50 ppm/°C
ADC Offset Error1, 2
±18
mV max
See the Terminology and the Typical Performance
Characteristics sections
Gain Error1
±4
% ideal typ
External 2.5 V reference, V1 = 21.2 mV rms,
V2 = 116.7 mV rms
OSCILLATOR FREQUENCY (OSC)
450
kHz nominal
RCLKIN = 6.2 kΩ, 0.5% ± 50 ppm/°C
Oscillator Frequency Tolerance1
±12
% reading typ
Oscillator Frequency Stability1
±30
ppm/°C typ
REFERENCE INPUT
REFIN/OUT Input Voltage Range
2.65
V max
2.45 V nominal
2.25
V min
2.45 V nominal
Input Capacitance
10
pF max
ON-CHIP REFERENCE
2.45 V nominal
Reference Error
±200
mV max
Temperature Coefficient
±20
ppm/°C typ
LOGIC INPUTS3
SCF, S0, S1
Input High Voltage, VINH
2.4
V min
VDD = 5 V ± 5%
Input Low Voltage, VINL
0.8
V max
VDD = 5 V ± 5%
Input Current, IIN
±1
μA max
Typically 10 nA, VIN = 0 V to VDD
Input Capacitance, CIN
10
pF max
LOGIC OUTPUTS3
F1 and F2
Output High Voltage, VOH
4.5
V min
ISOURCE = 10 mA, VDD = 5 V, ISINK = 10 mA, VDD = 5 V
Output Low Voltage, VOL
0.5
V max
CF
Output High Voltage, VOH
4
V min
ISOURCE = 5 mA, VDD = 5 V, ISINK = 5 mA, VDD = 5 V
Output Low Voltage, VOL
0.5
V max
Frequency Output Error1, 2 (CF)
±10
% ideal typ
External 2.5 V reference, V1 = 21.2 mV rms,
V2 = 116.7 mV rms


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