Datasheet

Data Sheet ADE7758
Rev. E | Page 5 of 72
SPECIFICATIONS
AVDD = DVDD = 5 V ± 5%, AGND = DGND = 0 V, on-chip reference, CLKIN = 10 MHz XTAL, T
MIN
to T
MAX
= −40°C to +85°C.
Table 1.
Parameter
1, 2
Specification Unit Test Conditions/Comments
ACCURACY
Active Energy Measurement Error
(per Phase)
0.1 % typ Over a dynamic range of 1000 to 1
Phase Error Between Channels Line frequency = 45 Hz to 65 Hz, HPF on
PF = 0.8 Capacitive ±0.05 °max Phase lead 37°
PF = 0.5 Inductive ±0.05 °max Phase lag 60°
AC Power Supply Rejection AVDD = DVDD = 5 V + 175 mV rms/120 Hz
Output Frequency Variation 0.01 % typ V1P = V2P = V3P = 100 mV rms
DC Power Supply Rejection AVDD = DVDD = 5 V ± 250 mV dc
Output Frequency Variation 0.01 % typ V1P = V2P = V3P = 100 mV rms
Active Energy Measurement Bandwidth 14 kHz
IRMS Measurement Error 0.5 % typ Over a dynamic range of 500:1
IRMS Measurement Bandwidth 14 kHz
VRMS Measurement Error 0.5 % typ Over a dynamic range of 20:1
VRMS Measurement Bandwidth 260 Hz
ANALOG INPUTS See the Analog Inputs section
Maximum Signal Levels ±500 mV max Differential input
Input Impedance (DC) 380 kΩ min
ADC Offset Error
3
±30 mV max Uncalibrated error, see the Terminology section
Gain Error
3
±6 % typ External 2.5 V reference
WAVEFORM SAMPLING Sampling CLKIN/128, 10 MHz/128 = 78.1 kSPS
Current Channels See the Current Channel ADC section
Signal-to-Noise Plus Distortion 62 dB typ
Bandwidth (−3 dB) 14 kHz
Voltage Channels See the Voltage Channel ADC section
Signal-to-Noise Plus Distortion 62 dB typ
Bandwidth (−3 dB) 260 Hz
REFERENCE INPUT
REF
IN/OUT
Input Voltage Range 2.6 V max 2.4 V + 8%
2.2 V min 2.4 V − 8%
Input Capacitance 10 pF max
ON-CHIP REFERENCE Nominal 2.4 V at REF
IN/OUT
pin
Reference Error ±200 mV max
Current Source 6 μA max
Output Impedance 4 kΩ min
Temperature Coefficient 30 ppm/°C typ
CLKIN All specifications CLKIN of 10 MHz
Input Clock Frequency 15 MHz max
5 MHz min
LOGIC INPUTS
DIN, SCLK, CLKIN, and CS
Input High Voltage, V
INH
2.4 V min DVDD = 5 V ± 5%
Input Low Voltage, V
INL
0.8 V max DVDD = 5 V ± 5%
Input Current, I
IN
±3 μA max Typical 10 nA, V
IN
= 0 V to DVDD
Input Capacitance, C
IN
10 pF max