ADE7880 datasheet(5/104 Pages) AD

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Data Sheet

ADE7880

Rev. A | Page 5 of 104

Parameter1, 2

Min

Typ

Max

Unit

Test Conditions/Comments

Output Frequency Variation

0.01

Fundamental Reactive Energy

Measurement Bandwidth (−3 dB)

3.3

kHz

RMS MEASUREMENTS

I RMS and V RMS Measurement

Bandwidth (−3 dB)

3.3

kHz

I RMS and V RMS Measurement Error

(PSM0 Mode)

0.1

Over a dynamic range of 1000 to 1,

PGA = 1

MEAN ABSOLUTE VALUE (MAV)

MEASUREMENT

I MAV Measurement Bandwidth

(PSM1 Mode)

260

I MAV Measurement Error (PSM1 Mode)

0.5

Over a dynamic range of 100 to 1,

PGA = 1, 2, 4, 8

HARMONIC MEASUREMENTS

Bandwidth (−3 dB)

3.3

kHz

No attenuation Pass Band

2.8

kHz

Fundamental Line Frequency fL

Nominal voltages must have amplitudes

greater than 100 mV peak at voltage ADCs

Maximum Number of Harmonics3

⎥

⎦

⎤

⎢

⎣

⎡

2800

Absolute Maximum Number of

Harmonics

Harmonic RMS Measurement Error

Instantaneous reading accuracy over a

dynamic range of 1000 to 1 for harmonics

of frequencies within the pass band; after

the initial 750 ms settling time; PGA = 1

Accuracy over a dynamic range of 2000:1

for harmonics of frequencies within the

pass band; average of 10 readings at 128

ms update rate, after the initial 750 ms

setting time; PGA = 1

Harmonic Active/Reactive Power

Measurement Error

Instantaneous reading accuracy over a

dynamic range of 1000 to 1 for harmonics

of frequencies within the pass band; after

the initial 750 ms settling time; PGA = 1.

Accuracy over a dynamic range of 2000:1

for harmonics of frequencies within the

pass band; average of 5 readings at 128 ms

update rate, after the initial 750 ms setting

time; PGA = 1.

ANALOG INPUTS

Maximum Signal Levels

±500

mV peak

Differential inputs between the following

pins: IAP and IAN, IBP and IBN, ICP and ICN;

single-ended inputs between the following

pins: VAP and VN, VBP and VN, VCP, and VN

Input Impedance (DC)

IAP, IAN, IBP, IBN, ICP, ICN, VAP, VBP,

and VCP Pins

490

kΩ

VN Pin

170

kΩ

ADC Offset Error

−35

PGA = 1, uncalibrated error, see the

Terminology section. Scales inversely

proportional to the other PGA gains.

Gain Error

−2

External 1.2 V reference

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