ADE7878 datasheet(6/92 Pages) AD

6 / 92 page

ADE7878

Rev. 0 | Page 6 of 92

Parameter1, 2

Min

Typ

Max

Unit

Test Conditions/Comments

DC Power Supply Rejection

VDD = 3.3 V ± 330 mV dc

Output Frequency Variation

0.01

Total Reactive Energy Measurement

Bandwidth

kHz

RMS MEASUREMENTS

I rms and V rms Measurement

Bandwidth

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

Imav Measurement Bandwidth (PSM1

Mode)

260

Imav Measurement Error (PSM1 Mode)

0.5

Over a dynamic range of 100 to 1, 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,

VCP Pins

400

kΩ

VN Pin

130

kΩ

ADC Offset Error

±20

PGA = 1, uncalibrated error, see the

Terminology section

Gain Error

±4

External 1.2 V reference

WAVEFORM SAMPLING

Sampling CLKIN/2048, 16.384 MHz/2048 =

8 kSPS

Current and Voltage Channels

See Waveform Sampling Mode section

Signal-to-Noise Ratio, SNR

PGA = 1

Signal-to-Noise-and-Distortion Ratio,

SINAD

PGA = 1

Bandwidth (−3 dB)

kHz

TIME INTERVAL BETWEEN PHASES

Measurement Error

0.3

Degrees

Line frequency = 45 Hz to 65 Hz, HPF on

CF1, CF2, CF3 PULSE OUTPUTS

Maximum Output Frequency

kHz

WTHR = VARTHR = VATHR = PMAX = 33,516,139

Duty Cycle

If CF1, CF2, or CF3 frequency > 6.25 Hz and

CFDEN is even and > 1

(1 + 1/CFDEN)

× 50%

If CF1, CF2, or CF3 frequency > 6.25 Hz and

CFDEN is odd and > 1

Active Low Pulse Width

If CF1, CF2, or CF3 frequency < 6.25 Hz

Jitter

0.04

For CF1, CF2, or CF3 frequency = 1 Hz and

nominal phase currents are larger than 10%

of full scale

REFERENCE INPUT

REFIN/OUT Input Voltage Range

1.1

1.3

Minimum = 1.2 V − 8%; maximum = 1.2 V + 8%

Input Capacitance

ON-CHIP REFERENCE

Nominal 1.2 V at REFIN/OUT pin at TA = 25°C

PSM0 and PSM1 Modes

Reference Error

±0.9

mV max

Output Impedance

1.4

kΩ min

Temperature Coefficient

ppm/°C

ADE7878 数据表(PDF) 6 Page - Analog Devices

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