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PDF ADE7753 Data sheet ( Hoja de datos )
| Número de pieza | ADE7753 | |
| Descripción | Single-Phase Multifunction Metering IC | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Single-Phase Multifunction Metering IC
with di/dt Sensor Interface
ADE7753
FEATURES
High accuracy; supports IEC 60687/61036/61268 and
IEC 62053-21/62053-22/62053-23
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, reactive, and apparent energy; sampled waveform;
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
line-voltage period measurement, and rms calculation on the
voltage and current. 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 pre-
cise phase matching between the current and voltage channels.
The ADE7753 provides a serial interface to read data, and a
pulse output frequency (CF), which is proportional to the active
power. Various system calibration features, i.e., 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 ADE77531 features proprietary ADCs and DSP for high
The interrupt status register indicates the nature of the interrupt,
accuracy over large variations in environmental conditions and
and the interrupt enable register controls which event produces
time. The ADE7753 incorporates two second-order 16-bit -Δ
an output on the IRQ pin, an open-drain, active low logic output.
ADCs, a digital integrator (on CH1), reference circuitry,
temperature sensor, and all the signal processing required to
The ADE7753 is available in a 20-lead SSOP package.
perform active, reactive, and apparent energy measurements,
FUNCTIONAL BLOCK DIAGRAM
AVDD
RESET
DVDD DGND
PGA
V1P
V1N
TEMP
SENSOR
ADC
INTEGRATOR
MULTIPLIER
dt
LPF2
WGAIN[11:0]
HPF1
PHCAL[5:0]
APOS[15:0]
2
IRMSOS[11:0]
VAGAIN[11:0]
x2
ADE7753
CFNUM[11:0]
DFC
CF
CFDEN[11:0]
PGA
VRMSOS[11:0]
V2P
V2N
ADC
LPF1
|x|
VADIV[7:0]
%%
WDIV[7:0]
ZX
2.4V
REFERENCE
4k
REGISTERS AND
SERIAL INTERFACE
SAG
AGND
REFIN/OUT
1U.S. Patents 5,745,323; 5,760,617; 5,862,069; 5,872,469.
CLKIN CLKOUT
Figure 1.
DIN DOUT SCLK CS IRQ
02875-A-001
Rev. C
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 ©2003–2010 Analog Devices, Inc. All rights reserved.
Free Datasheet http://www.Datasheet4U.com
1 page  
Parameter
Channel 2
Signal-to-Noise Plus Distortion
Bandwidth (–3 dB)
REFERENCE INPUT
REFIN/OUT Input Voltage Range
Input Capacitance
Spec Unit
60 dB typ
140 Hz
2.6 V max
2.2 V min
10 pF max
ON-CHIP REFERENCE
Reference Error
Current Source
Output Impedance
Temperature Coefficient
CLKIN
Input Clock Frequency
LOGIC INPUTS
RESET, DIN, SCLK, CLKIN, and CS
Input High Voltage, VINH
Input Low Voltage, VINL
Input Current, IIN
Input Capacitance, CIN
LOGIC OUTPUTS
SAG and IRQ
Output High Voltage, VOH
Output Low Voltage, VOL
ZX and DOUT
Output High Voltage, VOH
Output Low Voltage, VOL
CF
Output High Voltage, VOH
Output Low Voltage, VOL
POWER SUPPLY
AVDD
DVDD
AIDD
DIDD
±200
10
3.4
30
4
1
2.4
0.8
±3
10
4
0.4
4
0.4
4
1
4.75
5.25
4.75
5.25
3
4
1 See the Terminology section for explanation of specifications.
2 See the Analog Inputs section.
mV max
μA max
kΩ min
ppm/°C typ
MHz max
MHz min
V min
V max
μA max
pF max
V min
V max
V min
V max
V min
V max
V min
V max
V min
V max
mA max
mA max
Test Conditions/Comments
See the Channel 2 Sampling section
150 mV rms/60 Hz, gain = 2
CLKIN = 3.579545 MHz
2.4 V + 8%
2.4 V – 8%
Nominal 2.4 V at REFIN/OUT pin
All specifications CLKIN of 3.579545 MHz
DVDD = 5 V ± 10%
DVDD = 5 V ± 10%
Typically 10 nA, VIN = 0 V to DVDD
Open-drain outputs, 10 kΩ pull-up resistor
ISOURCE = 5 mA
ISINK = 0.8 mA
ISOURCE = 5 mA
ISINK = 0.8 mA
ISOURCE = 5 mA
ISINK = 7 mA
For specified performance
5 V – 5%
5 V + 5%
5 V – 5%
5 V + 5%
Typically 2.0 mA
Typically 3.0 mA
200 μA IOl
TO
OUTPUT
PIN
CL
50pF
+2.1V
1.6mA
IOH
02875-0-002
Figure 2. Load Circuit for Timing Specifications
ADE7753
Rev. C | Page 5 of 60
Free Datasheet http://www.Datasheet4U.com
5 Page 
ADE7753
TYPICAL PERFORMANCE CHARACTERISTICS
0.5
GAIN = 1
0.4 INTEGRATOR OFF
INTERNAL REFERENCE
0.3
–40°C, PF = 0.5
0.2
0.1 +25°C, PF = 1
0
–0.1
–0.2
+25°C, PF = 0.5
–0.3
–0.4
+85°C, PF = 0.5
–0.5
0.1
1 10
FULL-SCALE CURRENT (%)
100
02875-0-006
Figure 6. Active Energy Error as a Percentage of Reading (Gain = 1) over
Power Factor with Internal Reference and Integrator Off
0.4
GAIN = 8
0.3 INTEGRATOR OFF
INTERNAL REFERENCE
+85°C, PF = 1
0.2 –40°C, PF = 1
0.1
0
–0.1
+25°C, PF = 1
–0.2
–0.3
–0.4
0.1
1 10
FULL-SCALE CURRENT (%)
100
02875-0-008
Figure 7. Active Energy as a Percentage of Reading (Gain = 8) over
Temperature with Internal Reference and Integrator Off
0.8
GAIN = 8
0.6
INTEGRATOR OFF
INTERNAL REFERENCE
0.4
0.2 +25°C, PF = 1
0
–0.2
+25°C, PF = 0.5
–0.4
–40°C, PF = 0.5
+85°C, PF = 0.5
–0.6
0.1
1 10
FULL-SCALE CURRENT (%)
100
02875-0-009
Figure 8. Active Energy Error as a Percentage of Reading (Gain = 8) over
Power Factor with Internal Reference and Integrator Off
0.3
GAIN = 8
0.2 INTEGRATOR OFF
EXTERNAL REFERENCE
0.1 +85°C, PF = 1
+25°C, PF = 1
0
–0.1
–0.2
–40°C, PF = 1
–0.3
0.1
1 10
FULL-SCALE CURRENT (%)
100
02875-0-010
Figure 9. Active Energy Error as a Percentage of Reading (Gain = 8) over
Temperature with External Reference and Integrator Off
0.6
GAIN = 8
INTEGRATOR OFF
0.4 EXTERNAL REFERENCE
0.2
+25°C, PF = 1
0
+85°C, PF = 0.5
–0.2
–40°C, PF = 0.5
–0.4 +25°C, PF = 0.5
–0.6
0.1
1 10
FULL-SCALE CURRENT (%)
100
02875-0-011
Figure 10. Active Energy Error as a Percentage of Reading (Gain = 8) over
Power Factor with External Reference and Integrator Off
0.5
0.4
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
0.1
+25°C, PF = 0
GAIN = 1
INTEGRATOR OFF
INTERNAL REFERENCE
–40°C, PF = 0.5
+85°C, PF = 0.5
+25°C, PF = 0.5
1 10
FULL-SCALE CURRENT (%)
100
02875-0-012
Figure 11. Reactive Energy Error as a Percentage of Reading (Gain = 1) over
Power Factor with Internal Reference and Integrator Off
Rev. C | Page 11 of 60
Free Datasheet http://www.Datasheet4U.com
11 Page | ||
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| PDF Descargar | [ Datasheet ADE7753.PDF ] | |
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