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기능 Multifunction Metering IC
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ADE7953 데이터시트, 핀배열, 회로
Data Sheet
Single Phase, Multifunction Metering IC
with Neutral Current Measurement
ADE7953
FEATURES
The device incorporates three Σ-Δ ADCs with a high accuracy
Measures active, reactive, and apparent energy; sampled
waveform; current and voltage rms
Provides a second current input for neutral current
measurement
Less than 0.1% error in active and reactive energy
measurements over a dynamic range of 3000:1
Less than 0.2% error in instantaneous IRMS measurement
over a dynamic range of 1000:1
energy measurement core. The second input channel simulta-
neously measures neutral current and enables tamper detection
and neutral current billing. The additional channel incorporates
a complete signal path that allows a full range of measurements.
Each input channel supports independent and flexible gain stages,
making the device suitable for use with a variety of current sensors
such as current transformers (CTs) and low value shunt resistors.
Two on-chip integrators facilitate the use of Rogowski coil sensors.
Provides apparent energy measurement and instantaneous
The ADE7953 provides access to on-chip meter registers via a
power readings
variety of communication interfaces including SPI, I2C, and UART.
1.23 kHz bandwidth operation
Two configurable low jitter pulse output pins provide outputs that
Flexible PGA gain stage (up to ×22)
Includes internal integrators for use with Rogowski coil sensors
SPI, I2C, or UART communication
are proportional to active, reactive, or apparent energy, as well as
current and voltage rms. A full range of power quality information
such as overcurrent, overvoltage, peak, and sag detection are
GENERAL DESCRIPTION
The ADE7953 is a high accuracy electrical energy measurement
IC intended for single phase applications. It measures line voltage
and current and calculates active, reactive, and apparent energy,
as well as instantaneous rms voltage and current.
accessible via the external IRQ pin. Independent active, reactive,
and apparent no-load detections are included to prevent “meter
creep.” Dedicated reverse power (REVP), zero-crossing voltage
(ZX), and zero-crossing current (ZX_I) pins are also provided. The
ADE7953 energy metering IC operates from a 3.3 V supply voltage
and is available in a 28-lead LFCSP package.
FUNCTIONAL BLOCK DIAGRAM
REF
RESET
VDD
VINTA
VINTD
1.2V REF
LOW
NOISE
PRE-AMP
IAP
PGA
IAN
ADC
AIGAIN
APHCAL VGAIN
HPF
DIGITAL
INTEGRATOR
VP
PGA
VN
ADC
IBP
PGA
IBN
ADC
HPF
ACTIVE, REACTIVE AND
APPARENT ENERGIES AND
VOLTAGE/CURRENT RMS
CALCULATION FOR PHASE B
(SEE PHASE A FOR DETAILED
DATA PATH).
AIRMSOS
X2 LPF
AIRMS
AVAGAIN
ADE7953
X2 LPF
AVRMS
VRMSOS
AWGAIN AWATTOS
LPF
COMPUTATIONAL
BLOCK FOR TOTAL
REACTIVE POWER
AVARGAIN AVAROS
PHASE
A AND B
DATA
CF1DEN
DFC :
CF2DEN
DFC :
CF1
CF2
AGND
DGND
CONFIGURATION
AND CONTROL
UART
SPI INTERFACE
REVP
ZX
ZX_I
REVP
ZX
ZX_I
PEAK
I2C ANGLE
POWER FACTOR
SAG
CLKIN CLKOUT
IRQ CS
Figure 1.
MISO/
SDA/Tx
MOSI/
SCL/Rx
SCLK
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2011 Analog Devices, Inc. All rights reserved.




ADE7953 pdf, 반도체, 판매, 대치품
ADE7953
Data Sheet
SPECIFICATIONS
VDD = 3.3 V ± 10%, AGND = DGND = 0 V, on-chip reference, CLKIN = 3.58 MHz, TMIN to TMAX = −40°C to +85°C, Register Address 0x120
set to 0x30, unless otherwise noted.
Table 1.
Parameter
Min Typ Max Unit Test Conditions/Comments
PHASE ERROR BETWEEN CHANNELS
Line frequency = 45 Hz to 65 Hz, HPF on
Power Factor = 0.8 Capacitive
±0.05
Degrees Phase lead 37°
Power Factor = 0.5 Inductive
±0.05
Degrees Phase lag 60°
ACTIVE ENERGY MEASUREMENT
Active Energy Measurement Error 0.1 % Over a dynamic range of 3000:1, PGA = 1,
(Current Channel A)
PGA = 22, integrator off
Active Energy Measurement Error 0.1 % Over a dynamic range of 1000:1, PGA = 1,
(Current Channel B)
PGA = 16, integrator off
AC Power Supply Rejection
VDD = 3.3 V ± 120 mV rms, 100 Hz
Output Frequency Variation
0.01 %
DC Power Supply Rejection
VDD = 3.3 V ± 330 mV dc
Output Frequency Variation
0.01 %
Active Energy Measurement Bandwidth
1.23
kHz −3 db
REACTIVE ENERGY MEASUREMENT
Reactive Energy Measurement Error
(Current Channel A)
0.1
% Over a dynamic range of 3000:1, PGA = 1,
PGA = 22, integrator off
Reactive Energy Measurement Error
(Current Channel B)
0.1
% Over a dynamic range of 1000:1, PGA = 1,
PGA = 16, integrator off
AC Power Supply Rejection
VDD = 3.3 V ± 120 mV rms, 100 Hz
Output Frequency Variation
0.01 %
DC Power Supply Rejection
VDD = 3.3 V ± 330 mV dc
Output Frequency Variation
0.01 %
Reactive Energy Measurement
Bandwidth
1.23 kHz −3 db
RMS MEASUREMENT
IRMS and VRMS Measurement
Bandwidth
1.23 kHz
IRMS (Current Channel A) Measurement
Error
0.2
% Over a dynamic range of 1000:1, PGA = 1,
PGA = 22, integrator off
IRMS (Current Channel B) and VRMS
Measurement Error
0.2
% Over a dynamic range of 500:1, PGA = 1,
PGA = 16, integrator off
ANALOG INPUTS
Maximum Signal Levels
±500
mV peak Differential inputs: IAP to IAN, IBP to IBN
±500
mV peak Single-ended input: VP to VN, IBP to IBN
±250
mV peak Single-ended input: IAP to IAN
Input Impedance (DC)
IAP Pin
IAN Pin
IBP, IBN, VP, VN Pins
ADC Offset Error
Current Channel B, Voltage Channel
Current Channel A
50
50
540
Gain Error
Current Channel A
Current Channel B
Voltage Channel
0
±3
±3
±3
Uncalibrated error (see the Terminology
section)
±10 mV
−12 mV
PGA = 1
−1 mV PGA = 16, PGA = 22
External 1.2 V reference
%
%
%
Rev. A | Page 4 of 68

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ADE7953 전자부품, 판매, 대치품
Data Sheet
ADE7953
I2C Interface Timing
VDD = 3.3 V ± 10%, AGND = DGND = 0 V, on-chip reference, CLKIN = 3.58 MHz, TMIN to TMAX = −40°C to +85°C, unless otherwise noted.
Table 3.
Parameter
fSCL
tHD;STA
tLOW
tHIGH
tSU;STA
tHD;DAT
tSU;DAT
tR
tF
tSU;STO
tBUF
tSP
Description
SCL clock frequency
Hold time for a start or repeated start condition
Low period of SCL clock
High period of SCL clock
Setup time for a repeated start condition
Data hold time
Data setup time
Rise time of SDA and SCL signals
Fall time of SDA and SCL signals
Setup time for stop condition
Bus-free time between a stop and start condition
Pulse width of suppressed spikes
Standard Mode
Min1
Max1
0 100
4.0
4.7
4.0
4.7
0 3.45
250
1000
300
4.0
4.7
N/A
Min1
0
0.6
1.3
0.6
0.6
0
100
20
20
0.6
1.3
Fast Mode
Max1
400
0.9
300
300
50
Unit
kHz
μs
μs
μs
μs
μs
ns
ns
ns
μs
μs
ns
1 Min and max values are typical minimum and maximum values.
I2C Interface Timing Diagram
SDA
tF
tLOW
tR
SCL
tHD;STA tHD;DAT
START
CONDITION
tSU;DAT
tF
tHD;STA
tHIGH
tSU;STA
REPEATED START
CONDITION
Figure 3. I2C Interface Timing
tSP tR
tBUF
tSU;STO
STOP
START
CONDITION CONDITION
Rev. A | Page 7 of 68

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부품번호상세설명 및 기능제조사
ADE7953

Multifunction Metering IC

Analog Devices
Analog Devices

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