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| 型號(hào)： | EVAL-ADE7763EB |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Single-Phase Active and Apparent Energy Metering IC |
| 中文描述： | 單相有功功率和視在電能計(jì)量IC |
| 文件頁數(shù)： | 1/56頁 |
| 文件大?。?/td> | 1328K |
| 代理商： | EVAL-ADE7763EB |
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Single-Phase Active and Apparent
Energy Metering IC
ADE7763
FEATURES
High accuracy; supports IEC 61036/60687, IEC62053-21, and
IEC62053-22
On-chip digital integrator enables direct interface-to-current
sensors with di/dt output
A PGA in the current channel allows direct interface to
shunts and current transformers
Active and apparent energy, sampled waveform, and current
and voltage rms
Less than 0.1% error in active energy measurement over a
dynamic range of 1000 to 1 at 25°C
Positive-only energy accumulation mode available
On-chip user programmable threshold for line voltage surge
and SAG and PSU supervisory
Digital calibration for power, phase, and input offset
On-chip temperature sensor (±3°C typical)
SPI-compatible serial interface
Pulse output with programmable frequency
Interrupt request pin (IRQ) and status register
Reference 2.4 V with external overdrive capability
Single 5 V supply, low power (25 mW typical)
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. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
GENERAL DESCRIPTION The ADE7763
1
features proprietary ADCs and fixed function
DSP for high accuracy over large variations in environmental
conditions and time. The ADE7763 incorporates two second-
order, 16-bit
Σ
- ADCs, a digital integrator (on Ch1), reference
circuitry, a temperature sensor, and all the signal processing
required to perform active and apparent energy measurements,
line-voltage period measurements, and rms calculation on the
voltage and current channels. The selectable on-chip digital
integrator provides direct interface to di/dt current sensors such
as Rogowski coils, eliminating the need for an external analog
integrator and resulting in excellent long-term stability and
precise phase matching between the current and the voltage
channels.
The ADE7763 provides a serial interface to read data and a
pulse output frequency (CF) that is proportional to the active
power. Various system calibration features such as channel
offset correction, phase calibration, and power calibration
ensure high accuracy. The part also detects short duration, low
or high voltage variations.
The positive-only accumulation mode 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. The zero-crossing output (ZX)
produces a pulse that is synchronized to the zero-crossing point
of the line voltage. This signal is used internally in the line cycle
active and apparent energy accumulation modes, which enables
faster calibration.
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, an open-drain, active low logic output.
The ADE7763 is available in a 20-lead SSOP package.
FUNCTIONAL BLOCK DIAGRAM
AVDD
RESET
DVDD
DGND
STEMP
ADC
ADC
DFC
x
2
ADE7763
LPF2
MULTIPLIER
INTEGRATOR
CLKIN CLKOUT
DIN DOUT SCLK
REF
IN/OUT
CS
IRQ
AGND
APOS[15:0]
VAGAIN[11:0]
VADIV[7:0]
IRMSOS[11:0]
VRMSOS[11:0]
WGAIN[11:0]
dt
SREGISTERS AND
CFNUM[11:0]
CFDEN[11:0]
2.4V
REFERENCE
4k
PHCAL[5:0]
HPF1
LPF1
0
V1P
V1N
V2N
V2P
PGA
PGA
ZX
SAG
CF
WDIV[7:0]
%
%
Φ
x
2
Figure 1.
1
U.S. Patents 5,745,323; 5,760,617; 5,862,069; 5,872,469; others pending.
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