ADE7978 datasheet(13/120 Pages) AD

13 / 120 page

Data Sheet

ADE7978/ADE7933/ADE7932

Rev. 0 | Page 13 of 120

ADE7933/ADE7932 SPECIFICATIONS

VDD1 = 3.3 V ± 10%, GND = 0 V, on-chip reference, XTAL1 = 4.096 MHz, TMIN to TMAX = −40°C to +85°C, TTYP = 25°C.

Table 6.

Parameter1

Min

Typ

Max

Unit

Test Conditions/Comments

ANALOG INPUTS

Pseudo Differential Signal Voltage Range

Between IP and IM Pins

−31.25

+31.25

mV peak

IM pin connected to GNDISO

Between V1P and VM Pins and

Between V2P and VM Pins

−500

+500

mV peak

Pseudo differential inputs between V1P

and VM pins and between V2P and VM pins,

VM pin connected to GNDISO

Maximum VM and IM Voltage

−25

+25

Crosstalk

−90

IP and IM inputs set to 0 V (GNDISO), V1P and

V2P inputs at full scale

−105

V2P or V1P and VM inputs set to 0 V (GNDISO),

IP and V1P or V2P inputs at full scale

Input Impedance to GNDISO (DC)

IP, IM, V1P, and V2P Pins

480

kΩ

VM Pin

280

kΩ

Current Channel ADC Offset Error

−2

Voltage Channel ADC Offset Error

−35

V2 channel applies to the ADE7933 only

ADC Offset Drift over Temperature

−500

+500

ppm/°C

V1 channel only

Gain Error

−4

Gain Drift over Temperature

−135

+135

ppm/°C

Current channel

−65

+65

ppm/°C

V1 and V2 channels

AC Power Supply Rejection

−90

VDD = 3.3 V + 120 mV rms at 50 Hz/100 Hz,

IP = V1P = V2P = GNDISO

DC Power Supply Rejection

−80

VDD = 3.3 V ± 330 mV dc, IP = 6.25 mV rms,

V1P = V2P = 100 mV rms

TEMPERATURE SENSOR

Accuracy

±5

°C

CLOCK INPUT

All specifications for XTAL1 = 4.096 MHz

Input Clock Frequency, XTAL1

3.6

4.096

4.21

MHz

Nominal value provided by the ADE7978;

min and max values apply if the ADE7933/

ADE7932 are used without the ADE7978

XTAL1 Duty Cycle

Values apply if the ADE7933/ADE7932 are

used without the ADE7978

XTAL1 Logic Inputs

Input High Voltage, VINH

2.4

Input Low Voltage, VINL

0.8

XTAL1 Total Capacitance2

XTAL2 Total Capacitance2

LOGIC INPUTS—SYNC, V2/TEMP, RESET_EN,

EMI_CTRL

Input High Voltage, VINH

2.4

Input Low Voltage, VINL

0.8

Input Current, IIN

Input Capacitance, CIN

LOGIC OUTPUTS—DATA

Output High Voltage, VOH

2.5

ISOURCE = 800 µA

Output Low Voltage, VOL

0.4

ISINK = 2 mA

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