ADE7978 datasheet(9/125 Pages) AD

部件名	ADE7978

功能描述	Isolated Energy Metering Chipset for Polyphase Shunt Meters

PDF	125 Pages

Scroll/Zoom	100%

制造商	AD [Analog Devices]

网页	http://www.analog.com

标志

9 / 125 page

Data Sheet

ADE7978/ADE7933/ADE7932/ADE7923

Rev. D | Page 9 of 125

Parameter1, 2

Min

Typ

Max

Unit

Test Conditions/Comments

Voltage Channels

SNR

SINAD Ratio

THD

−81

SFDR

dBFS

Bandwidth (−3 dB)

3.3

kHz

TIME INTERVAL BETWEEN PHASE SIGNALS

Measurement Error

0.3

Degrees

Line frequency = 45 Hz to 65 Hz, HPF on

CF1, CF2, CF3 PULSE OUTPUTS

Maximum Output Frequency

68.8

kHz

WTHR = VARTHR = VATHR = 3, CFxDEN = 1,

full scale current and voltage, PF = 1, one

phase only

Duty Cycle

CF1, CF2, or CF3 frequency > 6.25 Hz,

CFxDEN is even and > 1

(1 + 1/CFxDEN) × 50

CF1, CF2, or CF3 frequency > 6.25 Hz,

CFxDEN is odd and > 1

Active Low Pulse Width

CF1, CF2, or CF3 frequency < 6.25 Hz

CF Jitter

0.04

CF1, CF2, or CF3 frequency = 1 Hz, nominal

phase currents larger than 10% of full scale

1 See the Typical Performance Characteristics section.

2 See the Terminology section for definitions of the parameters.

ADE7978 数据表(PDF) 9 Page - Analog Devices

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