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ADE7753ARS датащи(PDF) 1 Page - Analog Devices

номер детали ADE7753ARS
подробное описание детали  Active and Apparent Energy Metering IC with di/dt sensor interface
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
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One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A.
Tel:
781/329-4700
www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2002
REV. PrF 10/02
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.
Active and Apparent Energy Metering IC
with di/dt sensor interface
ADE7753*
FEATURES
High Accuracy, supports IEC 61036 and IEC61268
On-Chip Digital Integrator enables direct interface with
current sensors with di/dt output
The ADE7753 supplies Active, Reactive and Apparent
Energy, Sampled Waveform, Current and Voltage RMS
Less than 0.1% error over a dynamic range of 1000 to 1
Positive only energy accumulation mode available
An On-Chip user Programmable threshold for line
voltage surge and SAG, and PSU supervisory
Digital Power, Phase & Input Offset Calibration
An On-Chip temperature sensor (±3°C typical)
A SPI compatible Serial Interface
A pulse output with programmable frequency
An Interrupt Request pin (IRQ) and Status register
Proprietary ADCs and DSP provide high accuracy data over
large variations in environmental conditions and time
Reference 2.4V±8% (20 ppm/°C typical)
with external overdrive capability
Single 5V Supply, Low power (25mW typical)
FUNCTIONAL BLOCK DIAGRAM
*U.S. Patents 5,745,323; 5,760,617; 5,862,069; 5,872,469; others Pending.
precise phase matching between the current and voltage
channels. The integrator can be switched on and off based on
the current sensor selected.
The ADE7753 contains an Active Energy register. It is
capable of holding more than 200 seconds of accumulated
power at full load. Data is read from the ADE7753 via the
serial interface. The ADE7753 also provides a pulse output
(CF) with output frequency is proportional to the active
power.
In addition to rms calculation and active and apparent power
information, the ADE7753 also accumulates the signed
reactive energy. The ADE7753 also provides various system
calibration features, i.e., channel offset correction, phase
calibration and power calibration. The part also incorporates
a detection circuit for short duration low or high voltage
variations.
The ADE7753 has a positive only accumulation mode which
gives the option to accumulate energy only when positive
power is detected. An internal no-load threshold ensures that
the part does not exhibit any creep when there is no load.
A zero crossing output (ZX) produces an output which is
synchronized to the zero crossing point of the line voltage.
This information is used in the ADE7753 to measure the
line's period. The signal is also used internally to the chip in
the line cycle Active and Apparent energy accumulation
mode. This enables a faster and more precise energy accumu-
lation and is useful during calibration. This signal is also
useful for synchronization of relay switching with a voltage
zero crossing.
The interrupt request output is an open drain, active low logic
output. The Interrupt Status Register indicates the nature of
the interrupt, and the Interrupt Enable Register controls
which event produces an output on the
IRQ pin.
The ADE7753 is available in 20-lead SSOP package.
:
DVDD
HPF
LPF2
DGND
CLKOUT
V1P
V1N
+
-
+
-
V2P
V2N
2.4V
REFERENCE
ADC
AVDD
PGA
CLKIN
REF IN/OUT
CF
RESET
AGND
4k
Φ
PHCAL[5:0]
MULTIPLIER
Σ
APOS[15:0]
DIN DOUT SCLK CS
SAG
ZX
IRQ
ADE7753 REGISTERS &
SERIAL INTERFACE
ADE7753
TEMP
SENSOR
LPF1
INTEGRATOR
dt
VRMSOS[11:0]
IRMSOS[11:0]
Σ
Σ
WGAIN[11:0]
WDIV[7:0]
CFNUM[11:0]
CFDEN[11:0]
DFC
VAGAIN[11:0]
VADIV[7:0]
:
PGA
ADC
PRELIMINARY TECHNICAL DATA
PreliminaryTechnicalData
GENERAL DESCRIPTION
The ADE7753 is an accurate active and apparent energy
measurements IC with a serial interface and a pulse output.
The ADE7753 incorporates two second order sigma delta
ADCs, a digital integrator (on CH1), reference circuitry,
temperature sensor, and all the signal processing required to
perform RMS calculation on the voltage and current, active,
reactive, and apparent energy measurement.
An on-chip digital integrator provides direct interface to di/
dt current sensors such as Rogowski coils. The digital
integrator eliminates the need for external analog integrator,
and this solution provides excellent long-term stability and
a


Аналогичный номер детали - ADE7753ARS

производительномер деталидатащиподробное описание детали
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Analog Devices
ADE7753ARS AD-ADE7753ARS Datasheet
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ADE7753ARSRL AD-ADE7753ARSRL Datasheet
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ADE7753ARSZ AD-ADE7753ARSZ Datasheet
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REV. C
ADE7753ARSZRL AD-ADE7753ARSZRL Datasheet
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REV. C
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Аналогичное описание - ADE7753ARS

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