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ADE7763ARSZ 其他数据使用手册 - ADI（亚德诺）
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特殊应用集成芯片
封装:
SSOP-20
描述:
ANALOG DEVICES ADE7763ARSZ. 芯片, 能量计, 单相, SSOP-20
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ADE7763ARSZ数据手册
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Single-Phase Active and Apparent
Energy Metering IC
Data Sheet
ADE7763
Rev. C Document Feedback
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 ©2004–2013 Analog Devices, Inc. All rights reserved.
Technical Support www.analog.com
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)
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
04481-A-001
AVDD
RESET
DVDD DGND
TEMP
SENSOR
ADC
ADC
DFC
x
2
ADE7763
LPF2
MULTIPLIER
INTEGRATOR
CLKIN
CLKOUT
DIN DOUT SCLKREF
IN/OUT
CS IRQ
AGND
APOS[15:0]
VAGAIN[11:0]
VADIV[7:0]
IRMSOS[11:0]
VRMSOS[11:0]
LPF3
LPF3
WGAIN[11:0]
dt
REGISTERS AND
SERIAL INTERFACE
CFNUM[11:0]
CFDEN[11:0]
2.4V
REFERENCE
4kΩ
PHCAL[5:0]
HPF1
LPF1
V1P
V1N
V2N
V2P
PGA
PGA
ZX
SAG
CF
WDIV[7:0]
% %
Φ
|x|
Figure 1.
1
U.S. Patents 5,745,323; 5,760,617; 5,862,069; 5,872,469.
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