Datasheet
ADE7755
Rev. A | Page 3 of 20
SPECIFICATIONS
AV
DD
= DV
DD
= 5 V ± 5%, AGND = DGND = 0 V, on-chip reference, CLKIN = 3.58 MHz, T
MIN
to T
MAX
= −40°C to +85°C.
Table 1.
Parameter Min Typ Max Unit Test Conditions/Comments
ACCURACY
1, 2
Measurement Error
1
on Channel 1 Channel 2 with full-scale signal (±660 mV), 25°C
Gain = 1 0.1 % reading Over a dynamic range of 500 to 1
Gain = 2 0.1 % reading Over a dynamic range of 500 to 1
Gain = 8 0.1 % reading Over a dynamic range of 500 to 1
Gain = 16 0.1 % reading Over a dynamic range of 500 to 1
Phase Error
1
Between Channels Line frequency = 45 Hz to 65 Hz
V1 Phase Lead 37° (PF = 0.8 Capacitive) ±0.1 Degrees
AC/DC
= 0 and AC/DC = 1
V1 Phase Lag 60° (PF = 0.5 Inductive) ±0.1 Degrees
AC/DC
= 0 and AC/DC = 1
AC Power Supply Rejection
1
AC/DC
= 1, S0 = S1 = 1, G0 = G1 = 0
Output Frequency Variation (CF) 0.2 % reading
V1 = 100 mV rms, V2 = 100 mV rms @ 50 Hz,
ripple on AV
DD
of 200 mV rms @ 100 Hz
DC Power Supply Rejection
1
AC/DC
= 1, S0 = S1 = 1, G0 = G1 = 0
Output Frequency Variation (CF) ±0.3 % reading
V1 = 100 mV rms, V2 = 100 mV rms,
AV
DD
= DV
DD
= 5 V ± 250 mV
ANALOG INPUTS See the Analog Inputs section
Maximum Signal Levels ±1 V V1P, V1N, V2N, and V2P to AGND
Input Impedance (DC) 390 kΩ CLKIN = 3.58 MHz
−3 dB Bandwidth 14 kHz CLKIN/256, CLKIN = 3.58 MHz
ADC Offset Error
1, 2
±25 mV Gain = 1
1, 2
Gain Error
1
±7 % ideal External 2.5 V reference, gain = 1
V1 = 470 mV dc, V2 = 660 mV dc
Gain Error Match
1
±0.2 % ideal External 2.5 V reference
REFERENCE INPUT
REF
IN/OUT
Input Voltage Range 2.7 V 2.5 V + 8%
2.3 V 2.5 V − 8%
Input Impedance 3.2 kΩ
Input Capacitance 10 pF
ON-CHIP REFERENCE Nominal 2.5 V
Reference Error ±200 mV
Temperature Coefficient ±30 ppm/°C
CLKIN Note all specifications for CLKIN of 3.58 MHz
Input Clock Frequency 4 MHz
1 MHz
LOGIC INPUTS
3
SCF, S0, S1, AC/DC, RESET, G0, and G1
Input High Voltage, V
INH
2.4 V DV
DD
= 5 V ± 5%
Input Low Voltage, V
INL
0.8 V DV
DD
= 5 V ± 5%
Input Current, I
IN
±3 μA Typically 10 nA, V
IN
= 0 V to DV
DD
Input Capacitance, C
IN
10 pF
LOGIC OUTPUTS
3
F1 and F2
Output High Voltage, V
OH
4.5 V I
SOURCE
= 10 mA, DV
DD
= 5 V
Output Low Voltage, V
OL
0.5 V I
SINK
= 10 mA, DV
DD
= 5 V
CF and REVP
Output High Voltage, V
OH
4 V I
SOURCE
= 5 mA, DV
DD
= 5 V
Output Low Voltage, V
OL
0.5 V I
SINK
= 5 mA, DV
DD
= 5 V