ADE7754
器件资料摘要：
REV. PrG 01/03
PRELIMINARY TECHNICAL DATA
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
Preliminary Technical Data ADE7754*
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703 © Analog Devices, Inc., 2003
Poly-phase Multi-Function
Energy Metering IC with Serial Port
FUNCTIONAL BLOCK DIAGRAM
FEATURES
High Accuracy, supports IEC 687/61036
Compatible with 3-phase/3-wire, 3-phase/4-wire
and any type of 3-phase services
Less than 0.1% error in Active Power Measurement
over a dynamic range of 1000 to 1
The ADE7754 supplies Active Energy, Apparent Energy,
Voltage rms, Current rms and Sampled Waveform Data.
Digital Power, Phase & Input Offset Calibration.
An On-Chip temperature sensor (±3°C typ. after calibration)
On-Chip user Programmable thresholds for line voltage
SAG and overdrive detections.
A SPI compatible Serial Interface with Interrupt Request line
(IRQ).
A pulse output with programmable frequency
Proprietary ADCs and DSP provide high accuracy over large
variations in environmental conditions and time.
Reference 2.4V±8% (Drift 30 ppm/°C typical)
with external overdrive capability
Single 5V Supply, Low power (80mW typical)
The ADE7754 provides different solutions to measure Active
and Apparent Energy from the six analog inputs thus en-
abling the use of the ADE7754 in various Power meter
services as 3-phase 4-wire, 3-phase 3-wire but also 4-wire
delta.
In addition to RMS calculation, Real and Apparent power
informations, the ADE7754 provides system calibration
features for each phase, i.e., channel offset correction, phase
calibration and gain calibration. The CF logic output gives
instantaneous real power information.
The ADE7754 has a waveform sample register which enables
access to ADC outputs. The part also incorporates a detec-
tion circuit for short duration low or high voltage variations.
The voltage threshold levels and the duration (no. of half line
cycles) of the variation are user programmable.
A zero crossing detection is synchronized which the zero
crossing point of the line voltage of each of the three phases.
This information is used to measure each line’s Period. It is
also used internally to the chip in the Line Active Energy and
Line Apparent Energy accumulation modes. This permits
faster and more accurate calibration of the power calcula-
tions. This signal is also useful for synchronization of relay
switching.
Data is read from the ADE7754 via the SPI serial interface.
The interrupt request output (IRQ) is an open drain, active
low logic output. The IRQ output will go active low when one
or more interrupt events have occurred in the ADE7754. A
status register will indicate the nature of the interrupt.
The ADE7754 is available in a 24-lead SOIC package.
* Patents pending.
CS IRQ
ADE7754 REGISTERS &
SERIAL INTERFACETEMP
SENSOR
ADC
2.5V
REF
4kΩ
CFNUM
CFDEN
DFC
WDIV
ADC
PGA1
ADC
PGA2
ADC
PGA1
ADC
PGA2
ADE7754
Power
Supply
Monitor
HPF
Φ APHCAL
Σ
AAPOS
LPF2
AWG
ADC
PGA1
ADC
PGA2
Σ
AIRMSOS
AVAG
AVRMSOS
VADIV
Σ
BAPOS
LPF2
BWG
Σ
BIRMSOS
BVAG
BVRMSOS
Σ
CAPOS
LPF2
CWG
Σ
CIRMSOS
CVAG
CVRMSOS
AVGAIN
AAPGAIN
HPF
BVGAIN
BAPGAIN
HPF
CVGAIN
CAPGAIN
Φ BPHCAL
Φ CPHCAL
Σ
Σ
IBP
IBN
VBP
VN
ICP
ICN
VCP
IAP
IAN
VAP
7
8
15
10
14
13
5
6
16
AVDDRESET
17 4
CLKOUT
CLKIN
DGND
20
19
2
DVDD
3
CF
1
REF
IN/OUTAGND SCLKDOUTDIN
11 12 22 24 23 21 18
Σ
Σ
Σ
|X|
ABS
|X|
ABS
|X|
ABS
X
2
X
2
X
2
X
2
X
2
X
2
GENERAL DESCRIPTION
The ADE7754 is a high accuracy Poly-phase electrical
energy measurement IC with a serial interface and a pulse
output. The ADE7754 incorporates second order sigma-
delta ADCs, reference circuitry, temperature sensor, and all
the signal processing required to perform Active, Apparent
Energy measurements and rms calculation.
PRELIMINARY TECHNICAL DATA
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
Preliminary Technical Data ADE7754*
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703 © Analog Devices, Inc., 2003
Poly-phase Multi-Function
Energy Metering IC with Serial Port
FUNCTIONAL BLOCK DIAGRAM
FEATURES
High Accuracy, supports IEC 687/61036
Compatible with 3-phase/3-wire, 3-phase/4-wire
and any type of 3-phase services
Less than 0.1% error in Active Power Measurement
over a dynamic range of 1000 to 1
The ADE7754 supplies Active Energy, Apparent Energy,
Voltage rms, Current rms and Sampled Waveform Data.
Digital Power, Phase & Input Offset Calibration.
An On-Chip temperature sensor (±3°C typ. after calibration)
On-Chip user Programmable thresholds for line voltage
SAG and overdrive detections.
A SPI compatible Serial Interface with Interrupt Request line
(IRQ).
A pulse output with programmable frequency
Proprietary ADCs and DSP provide high accuracy over large
variations in environmental conditions and time.
Reference 2.4V±8% (Drift 30 ppm/°C typical)
with external overdrive capability
Single 5V Supply, Low power (80mW typical)
The ADE7754 provides different solutions to measure Active
and Apparent Energy from the six analog inputs thus en-
abling the use of the ADE7754 in various Power meter
services as 3-phase 4-wire, 3-phase 3-wire but also 4-wire
delta.
In addition to RMS calculation, Real and Apparent power
informations, the ADE7754 provides system calibration
features for each phase, i.e., channel offset correction, phase
calibration and gain calibration. The CF logic output gives
instantaneous real power information.
The ADE7754 has a waveform sample register which enables
access to ADC outputs. The part also incorporates a detec-
tion circuit for short duration low or high voltage variations.
The voltage threshold levels and the duration (no. of half line
cycles) of the variation are user programmable.
A zero crossing detection is synchronized which the zero
crossing point of the line voltage of each of the three phases.
This information is used to measure each line’s Period. It is
also used internally to the chip in the Line Active Energy and
Line Apparent Energy accumulation modes. This permits
faster and more accurate calibration of the power calcula-
tions. This signal is also useful for synchronization of relay
switching.
Data is read from the ADE7754 via the SPI serial interface.
The interrupt request output (IRQ) is an open drain, active
low logic output. The IRQ output will go active low when one
or more interrupt events have occurred in the ADE7754. A
status register will indicate the nature of the interrupt.
The ADE7754 is available in a 24-lead SOIC package.
* Patents pending.
CS IRQ
ADE7754 REGISTERS &
SERIAL INTERFACETEMP
SENSOR
ADC
2.5V
REF
4kΩ
CFNUM
CFDEN
DFC
WDIV
ADC
PGA1
ADC
PGA2
ADC
PGA1
ADC
PGA2
ADE7754
Power
Supply
Monitor
HPF
Φ APHCAL
Σ
AAPOS
LPF2
AWG
ADC
PGA1
ADC
PGA2
Σ
AIRMSOS
AVAG
AVRMSOS
VADIV
Σ
BAPOS
LPF2
BWG
Σ
BIRMSOS
BVAG
BVRMSOS
Σ
CAPOS
LPF2
CWG
Σ
CIRMSOS
CVAG
CVRMSOS
AVGAIN
AAPGAIN
HPF
BVGAIN
BAPGAIN
HPF
CVGAIN
CAPGAIN
Φ BPHCAL
Φ CPHCAL
Σ
Σ
IBP
IBN
VBP
VN
ICP
ICN
VCP
IAP
IAN
VAP
7
8
15
10
14
13
5
6
16
AVDDRESET
17 4
CLKOUT
CLKIN
DGND
20
19
2
DVDD
3
CF
1
REF
IN/OUTAGND SCLKDOUTDIN
11 12 22 24 23 21 18
Σ
Σ
Σ
|X|
ABS
|X|
ABS
|X|
ABS
X
2
X
2
X
2
X
2
X
2
X
2
GENERAL DESCRIPTION
The ADE7754 is a high accuracy Poly-phase electrical
energy measurement IC with a serial interface and a pulse
output. The ADE7754 incorporates second order sigma-
delta ADCs, reference circuitry, temperature sensor, and all
the signal processing required to perform Active, Apparent
Energy measurements and rms calculation.