Digital, Polyphase, Metrology IC
with ADC Bit Stream Interface
ADE7979
Data Sheet
The ADE7979 measures the active, reactive, and apparent
energy in 3-phase configurations that include delta and wye
services that can both be used with either three or four wires.
The ADE7979 provides system calibration features for each
phase, gain calibration, and optional offset correction. Phase
compensation is also available on the device but is not necessary
because the currents are sensed using shunts. The CF1, CF2,
and CF3 pulse outputs provide a wide selection of power
information that includes the sum of the current rms values,
fundamental active and reactive powers, and total active,
reactive, and apparent powers.
FEATURES
Digital, metrology IC, shunt-based polyphase meters
Use in the mSure® system with the ADE9322B
High accuracy, supports EN50470-1, EN50470-3, IEC62053-21,
IEC62053-22, IEC62053-23, IEC62053-24, ANSIC12.20, and
IEEE1459 standards
Compatible with 3-phase, 3-wire or 4-wire (delta or wye)
meters, and other 3-phase services
Computes active, reactive, and apparent energy on each
phase and for the overall system
Neutral current calculation
Power quality measurements including THD
Single 3.3 V supply
Operating temperature: −40°C to +85°C
Flexible I2C, SPI, and HSDC serial interfaces
The ADE7979 incorporates power quality measurements that
include short duration low or high voltage detection, short
duration high current variations, line voltage period measurement,
and angles between phase voltages and currents.
Either serial peripheral interface (SPI) or I2C interface can be
used to communicate with the ADE7979. The high speed data
capture (HSDC) port is a dedicated, high speed interface that can
be used in conjunction with the I2C to provide access to the
ADC outputs and real-time power information. The ADE7979
APPLICATIONS
Shunt-based, mSure enabled, polyphase meters
Solar inverters
Process monitoring
Smart power distribution units
Polyphase ac chargers
IRQ0
IRQ1
also has two interrupt request output pins,
and
, that
indicate when an enabled interrupt event occurs. The ADE7979
is available in a pb-free, 28-lead, lead frame chip scale package
(LFCSP).
GENERAL DESCRIPTION
The ADE7979 is a high accuracy, 3-phase, digital metrology
engine with flexible serial interfaces and three flexible pulse
outputs (CF1, CF2, and CF3). The device takes in four sigma-
delta (Σ-Δ) analog-to-digital converter (ADC) bit streams and
performs all essential energy metering functions including
reactive power and rms to create a polyphase energy metering
application using shunt current sensors. A complete metrology
system requires the ADE7979, up to four ADE9322B Σ-Δ ADC
ICs, external isolation, and a power supply of 3.3 V. The power
supply required to power the ADE7979 is 3.3 V and must be
isolated from the Σ-Δ ADC ICs.
Note that throughout this data sheet, multifunction pins, such
as SCLK/SCL, are referred to by the entire pin name or by a
single function of the pin, for example, SCLK, when only that
function is relevant.
For more information about the ADE7979, contact
your local Analog Devices, Inc., Sales Team, email
energy.support@analog.com, or visit www.analog.com/mSure.
The ADE7979 incorporates all signal processing required to
perform total (fundamental and harmonic) active, reactive, and
apparent energy measurement and rms calculations, as well as
fundamental only active and reactive energy measurement and
rms calculations. A fixed function digital signal processor
(DSP) executes this signal processing.
1 Protected by U.S. Patents 5,952,849; 6,873,065; 7,075,329; 6,262,600; 7,489,526; 7,558,080; and 8,892,933. Other patents are pending.
Rev. Sp0 Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
rights of third parties that may result from its use. Specifications subject to change without notice.
No license is granted by implication or otherwise under any patent or patent rights of Analog
Devices.Trademarks and registered trademarks are theproperty of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Technical Support
©2021 Analog Devices, Inc. All rights reserved.
www.analog.com
5秒后页面跳转
LM317T数据手册解读：产品特性、应用、封装与引脚详解
一文带你了解?DB3二极管好坏判断、参数信息、替代推荐
LM358DR数据手册：引脚说明、电气参数及替换型号推荐
OP07CP数据手册解读：引脚信息、电子参数
微信公众号
抖音公众号
浙公网安备 33010502006866号 浙ICP备10014259号-119
营业执照ICP证
数据手册
如果您发现信息不准确，
