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ADE7932 PDF 데이터시트 ( Data , Function )

부품번호 ADE7932 기능
기능 Isolated Energy Metering Chipset
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ADE7932 데이터시트, 핀배열, 회로
Data Sheet
Isolated Energy Metering Chipset
for Polyphase Shunt Meters
ADE7978/ADE7933/ADE7932
FEATURES
Enables shunt current sensors in polyphase energy meters
Immune to magnetic tampering
Highly accurate; supports EN 50470-1, EN 50470-3,
IEC 62053-21, IEC 62053-22, IEC 62053-23, ANSI C12.20,
and IEEE 1459 standards
Compatible with 3-phase, 3- or 4-wire (delta or wye) meters
and other 3-phase services
Computes active, reactive, and apparent energy on each
phase and on the overall system
Less than 0.2% error in active and reactive energy over
a dynamic range of 2000 to 1 at TA = 25°C
Less than 0.1% error in voltage rms over a dynamic range
of 500 to 1 at TA = 25°C
Less than 0.25% error in current rms over a dynamic range
of 500 to 1 at TA = 25°C
Power quality measurements including THD
Single 3.3 V supply
Operating temperature: −40°C to +85°C
Flexible I2C, SPI, and HSDC serial interfaces
Safety and regulatory approvals (pending)
UL recognition
5000 V rms for 1 minute per UL 1577
CSA Component Acceptance Notice #5A
IEC 61010-1: 400 V rms
VDE certificate of conformity
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
VIORM = 846 V peak
APPLICATIONS
Shunt-based polyphase meters
Power quality monitoring
Solar inverters
Process monitoring
Protective devices
Isolated sensor interfaces
Industrial PLCs
TYPICAL APPLICATION CIRCUIT
PHASE PHASE PHASE
NEUTRAL
A
B
C
ISOLATION
BARRIER
V1P
VM
IM PHASE A
ADE7932/
IP ADE7933
V2P
3.3V
GNDISO_A
GNDMCU
V1P
VM
IM PHASE B
ADE7932/
IP ADE7933
V2P
3.3V
GNDISO_B
GNDMCU
V1P
VM
IM PHASE C
ADE7932/
IP ADE7933
V2P
3.3V
ADE7978
ENERGY
METERING
IC
3.3V
I2C/HSDC OR SPI
IRQ0, IRQ1
GNDMCU
3.3V
GNDMCU
LOAD
GNDISO_C
GNDMCU
V1P
VM NEUTRAL
IM
LINE
ADE7932/
ADE7933
IP (OPTIONAL)
V2P
3.3V
GNDISO_N
GNDMCU
EARTH
Figure 1. 3-Phase, 4-Wire Meter with Four ADE7933/ADE7932 Devices and One ADE7978
1 Protected by U.S. Patents 5,952,849; 6,873,065; 7,075,329; 6,262,600; 7,489,526; and 7,558,080. Other patents are pending.
Rev. 0
Document Feedback
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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.
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One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2013 Analog Devices, Inc. All rights reserved.
Technical Support
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ADE7932 pdf, 반도체, 판매, 대치품
ADE7978/ADE7933/ADE7932
GENERAL DESCRIPTION
The ADE7978 and the ADE7933/ADE7932 form a chipset
dedicated to measuring 3-phase electrical energy using shunts
as current sensors.
The ADE7933/ADE7932 are isolated, 3-channel sigma-delta
analog-to-digital converters (Σ-Δ ADCs) for polyphase energy
metering applications that use shunt current sensors. The
ADE7932 features two 24-bit ADCs, and the ADE7933 features
three 24-bit ADCs. One channel is dedicated to measuring the
voltage across the shunt when a shunt is used for current sensing.
This channel provides a signal-to-noise ratio (SNR) of 67 dB over
a 3.3 kHz signal bandwidth. Up to two additional channels are
dedicated to measuring voltages, which are usually sensed using
resistor dividers. These channels provide an SNR of 75 dB over
a 3.3 kHz signal bandwidth. One voltage channel can be used to
measure the temperature of the die via an internal sensor. The
ADE7933 includes three channels: one current channel and two
voltage channels. The ADE7932 includes one current channel and
one voltage channel, but is otherwise identical to the ADE7933.
The ADE7933/ADE7932 include isoPower®, an integrated,
isolated dc-to-dc converter. Based on the Analog Devices, Inc.,
iCoupler® technology, the dc-to-dc converter provides the regu-
lated power required by the first stage of the ADCs at a 3.3 V
input supply. The ADE7933/ADE7932 eliminate the need for an
external dc-to-dc isolation block. The iCoupler chip scale trans-
former technology is used to isolate the logic signals between the
first and second stages of the ADC. The result is a small form
factor, total isolation solution.
The ADE7933/ADE7932 contain a digital interface that is specially
designed to interface with the ADE7978. Using this interface, the
ADE7978 accesses the ADC outputs and configuration settings
of the ADE7933/ADE7932.
The ADE7933/ADE7932 are available in a 20-lead, Pb-free, wide-
body SOIC package with increased creepage.
Data Sheet
The ADE7978 is a high accuracy, 3-phase electrical energy
measurement IC with serial interfaces and three flexible pulse
outputs. The ADE7978 can interface with up to four ADE7933/
ADE7932 devices. The ADE7978 incorporates all the 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.
The ADE7978 measures the active, reactive, and apparent energy
in various 3-phase configurations, such as wye or delta services,
with both three and four wires. The ADE7978 provides system
calibration features for each phase, gain calibration, and optional
offset correction. Phase compensation is also available, but it is
not necessary because the currents are sensed using shunts. The
CF1, CF2, and CF3 logic outputs provide a wide selection of
power information: total active, reactive, and apparent powers;
the sum of the current rms values; and fundamental active and
reactive powers.
The ADE7978 incorporates power quality measurements, such
as short duration low or high voltage detection, short duration
high current variations, line voltage period measurement, and
angles between phase voltages and currents. Two serial interfaces,
SPI and I2C, can be used to communicate with the ADE7978.
A dedicated high speed interface—the high speed data capture
(HSDC) port—can be used in conjunction with I2C to provide
access to the ADC outputs and real-time power information.
The ADE7978 also has two interrupt request pins, IRQ0 and
IRQ1, to indicate that an enabled interrupt event has occurred.
The ADE7978 is available in a 28-lead, Pb-free LFCSP package.
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.
Rev. 0 | Page 4 of 120

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ADE7932 전자부품, 판매, 대치품
Data Sheet
ADE7978/ADE7933/ADE7932
SPECIFICATIONS
SYSTEM SPECIFICATIONS, ADE7978 AND ADE7933/ADE7932
VDD = 3.3 V ± 10%, GND = DGND = 0 V, ADE7978 XTALIN = 16.384 MHz, TMIN to TMAX = −40°C to +85°C, TTYP = 25°C.
Table 1.
Parameter1, 2
ACTIVE ENERGY MEASUREMENT
Measurement Error (per Phase)
Total Active Energy
Min
Fundamental Active Power
AC Power Supply Rejection
Output Frequency Variation
DC Power Supply Rejection
Output Frequency Variation
Total Active Energy Measurement
Bandwidth
REACTIVE ENERGY MEASUREMENT
Measurement Error (per Phase)
Total Reactive Power
Fundamental Reactive Power
AC Power Supply Rejection
Output Frequency Variation
DC Power Supply Rejection
Output Frequency Variation
Total Reactive Energy Measurement
Bandwidth
RMS MEASUREMENTS
Measurement Bandwidth
V rms Measurement Error
I rms Measurement Error
Fundamental V rms Measurement Error
Fundamental I rms Measurement Error
WAVEFORM SAMPLING
Current Channels
Signal-to-Noise Ratio, SNR
Signal-to-Noise-and-Distortion
(SINAD) Ratio
Total Harmonic Distortion, THD
Spurious-Free Dynamic Range, SFDR
Typ
0.1
0.2
0.1
0.2
0.01
0.01
3.3
0.1
0.2
0.1
0.2
0.01
0.01
3.3
3.3
0.1
0.25
0.1
0.25
67
67
−85
88
Max Unit Test Conditions/Comments
% Over a dynamic range of 500 to 1, power
factor (PF) = 1, gain compensation only
% Over a dynamic range of 2000 to 1, PF = 1
% Over a dynamic range of 500 to 1, PF = 1,
gain compensation only
% Over a dynamic range of 2000 to 1, PF = 1
VDD = 3.3 V + 120 mV rms at 50 Hz/100 Hz,
IP = 6.25 mV rms, V1P = V2P = 100 mV rms
%
VDD = 3.3 V ± 330 mV dc, IP = 6.25 mV rms,
V1P = V2P = 100 mV rms
%
kHz
% Over a dynamic range of 500 to 1, PF = 0,
gain compensation only
% Over a dynamic range of 2000 to 1, PF = 0
% Over a dynamic range of 500 to 1, PF = 0,
gain compensation only
% Over a dynamic range of 2000 to 1, PF = 0
VDD = 3.3 V + 120 mV rms at 50 Hz/100 Hz,
IP = 6.25 mV rms, V1P = V2P = 100 mV rms
%
VDD = 3.3 V ± 330 mV dc, IP = 6.25 mV rms,
V1P = V2P = 100 mV rms
%
kHz
kHz
%
%
%
%
dB
dB
dB
dBFS
I rms and V rms
Over a dynamic range of 500 to 1
Over a dynamic range of 500 to 1
Over a dynamic range of 500 to 1
Over a dynamic range of 500 to 1
Sampling CLKIN/2048 (16.384 MHz/2048 =
8 kSPS)
See the Waveform Sampling Mode section
Rev. 0 | Page 7 of 120

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부품번호상세설명 및 기능제조사
ADE7932

Isolated Energy Metering Chipset

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