ADE7758_15 datasheet(5/72 Pages) AD

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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, TMIN to TMAX = −40°C to +85°C.

Table 1.

Parameter1, 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

kHz

IRMS Measurement Error

0.5

% typ

Over a dynamic range of 500:1

IRMS Measurement Bandwidth

kHz

VRMS Measurement Error

0.5

% typ

Over a dynamic range of 20:1

VRMS Measurement Bandwidth

260

ANALOG INPUTS

See the Analog Inputs section

Maximum Signal Levels

±500

mV max

Differential input

Input Impedance (DC)

380

kΩ min

ADC Offset Error3

±30

mV max

Uncalibrated error, see the Terminology section

Gain Error3

±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

dB typ

Bandwidth (−3 dB)

kHz

Voltage Channels

See the Voltage Channel ADC section

Signal-to-Noise Plus Distortion

dB typ

Bandwidth (−3 dB)

260

REFERENCE INPUT

REFIN/OUT Input Voltage Range

2.6

V max

2.4 V + 8%

2.2

V min

2.4 V − 8%

Input Capacitance

pF max

ON-CHIP REFERENCE

Nominal 2.4 V at REFIN/OUT pin

Reference Error

±200

mV max

Current Source

μA max

Output Impedance

kΩ min

Temperature Coefficient

ppm/°C typ

CLKIN

All specifications CLKIN of 10 MHz

Input Clock Frequency

MHz max

MHz min

LOGIC INPUTS

DIN, SCLK, CLKIN, and CS

Input High Voltage, VINH

2.4

V min

DVDD = 5 V ± 5%

Input Low Voltage, VINL

0.8

V max

DVDD = 5 V ± 5%

Input Current, IIN

±3

μA max

Typical 10 nA, VIN = 0 V to DVDD

Input Capacitance, CIN

pF max

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