Data Sheet
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)
Single-Phase Active and Apparent
Energy Metering IC
ADE7763
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.
GENERAL DESCRIPTION
The ADE7763 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
1
AVDD
PGA
V1P
ADC
V1N
HPF1
TEMP
SENSOR
dt
RESET
INTEGRATOR
MULTIPLIER
FUNCTIONAL BLOCK DIAGRAM
DVDD
DGND
WGAIN[11:0]
LPF2
ADE7763
APOS[15:0]
IRMSOS[11:0]
LPF3
x
2
VAGAIN[11:0]
DFC
CF
CFNUM[11:0]
PGA
V2P
ADC
V2N
Φ
PHCAL[5:0]
4kΩ
LPF1
|x|
VRMSOS[11:0]
CFDEN[11:0]
LPF3
VADIV[7:0]
%
%
WDIV[7:0]
ZX
2.4V
REFERENCE
REGISTERS AND
SERIAL INTERFACE
SAG
AGND
1
REF
IN/OUT
CLKIN CLKOUT
DIN DOUT SCLK
CS
IRQ
U.S. Patents 5,745,323; 5,760,617; 5,862,069; 5,872,469.
Rev. C
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ADE7763* PRODUCT PAGE QUICK LINKS
Last Content Update: 02/23/2017
COMPARABLE PARTS
View a parametric search of comparable parts.
DESIGN RESOURCES
•
ADE7763 Material Declaration
•
PCN-PDN Information
•
Quality And Reliability
•
Symbols and Footprints
EVALUATION KITS
•
ADE7763 Evaluation Board
DOCUMENTATION
Application Notes
•
AN-564: A Power Meter Reference Design Based on the
ADE7756
•
AN-639: Frequently Asked Questions (FAQs) Analog
Devices Energy (ADE) Products
Data Sheet
•
ADE7763: Single-Phase Active and Apparent Energy
Metering IC Data Sheet
DISCUSSIONS
View all ADE7763 EngineerZone Discussions.
SAMPLE AND BUY
Visit the product page to see pricing options.
TECHNICAL SUPPORT
Submit a technical question or find your regional support
number.
REFERENCE MATERIALS
Solutions Bulletins & Brochures
•
Emerging Energy Applications Solutions Bulletin, Volume
10, Issue 4
Technical Articles
•
Current Sensing for Energy Metering
•
Digital Energy Meters by the Millions
•
Energy measurement ICs Simplify Meter Design
•
How Solid Is Your Solid-State Energy Meter? Not All Ics Are
Created Equal.
•
IC Technology and Failure Mechanisms - Understanding
Reliability Standards Can Raise Quality of Meters
•
Measuring Harmonic Energy with a Solid State Energy
Meter
•
Measuring Reactive Power in Energy Meters
•
Reactive Energy Measurement Made Simple
•
RF Meets Power Lines: Designing Intelligent Smart Grid
Systems that Promote Energy Efficiency
•
Solid State Solutions For Electricity Metrology
•
Tapping The Potential Of Electronic Energy Metering
•
Trusting Integrated Circuits in Metering Applications
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ADE7763
TABLE OF CONTENTS
Features .............................................................................................. 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 3
Specifications..................................................................................... 4
Timing Characteristics ................................................................ 6
Absolute Maximum Ratings ............................................................ 7
ESD Caution .................................................................................. 7
Terminology ...................................................................................... 8
Pin Configuration and Function Descriptions ............................. 9
Typical Performance Characteristics ........................................... 11
Theory of Operation ...................................................................... 14
Analog Inputs .............................................................................. 14
di/dt Current Sensor and Digital Integrator ........................... 15
Zero-Crossing Detection ........................................................... 16
Period Measurement .................................................................. 17
Power Supply Monitor ............................................................... 17
Line Voltage Sag Detection ....................................................... 18
Peak Detection ............................................................................ 18
Interrupts ..................................................................................... 19
Temperature Measurement ....................................................... 20
Analog-to-Digital Conversion .................................................. 20
Channel 1 ADC .......................................................................... 21
Channel 2 ADC .......................................................................... 23
Phase Compensation.................................................................. 24
Data Sheet
Active Power Calculation .......................................................... 25
Energy Calculation ..................................................................... 27
Power Offset Calibration ........................................................... 29
Energy-to-Frequency Conversion............................................ 29
Line Cycle Energy Accumulation Mode ................................. 31
Positive-Only Accumulation Mode ......................................... 31
No-Load Threshold.................................................................... 31
Apparent Power Calculation ..................................................... 32
Apparent Energy Calculation ................................................... 33
Line Apparent Energy Accumulation ...................................... 34
Energies Scaling .......................................................................... 35
Calibrating an Energy Meter .................................................... 35
CLKIN Frequency ...................................................................... 44
Suspending Functionality.......................................................... 45
Checksum Register..................................................................... 45
Serial Interface ............................................................................ 45
Registers ........................................................................................... 48
Register Descriptions ..................................................................... 51
Communication Register .......................................................... 51
Mode Register (0x09)................................................................. 51
Interrupt Status Register (0x0B), Reset Interrupt Status
Register (0x0C), Interrupt Enable Register (0x0A) ............... 53
CH1OS Register (0x0D) ............................................................ 54
Outline Dimensions ....................................................................... 55
Ordering Guide .......................................................................... 55
Rev. C | Page 2 of 56
Data Sheet
REVISION HISTORY
1/13—Rev. B to Rev. C
Changes to Figure 1........................................................................... 1
Moved Revision History Section ..................................................... 3
Changes to Table 2 ............................................................................ 6
Changes to Table 4 ............................................................................ 9
Changes to Figure 24 ......................................................................14
Changes to Zero-Crossing Detection Section .............................16
Changes to Period Measurement Section ....................................17
Changes to Peak Level Record Section .........................................18
Change to Figure 37 ........................................................................19
Changes to Figure 43, Channel 1 Sampling Section, and
Channel 1 RMS Calculation Section ...........................................22
Changes to Channel 1 RMS Offset Compensation Section and
Channel 2 Sampling Section ..........................................................23
Changes to Channel 2 RMS Calculation Section and Channel 2
RMS Offset Compensation Section ..............................................24
Changes to Energy Calculation Section .......................................27
Changes to Power Offset Calibration Section .............................29
Changes to Positive-Only Accumulation Mode Section............31
Changes to Serial Interface Section ..............................................45
Changes to Table 9 ..........................................................................48
Change to Table 12, Bit 1 Description ..........................................53
Changes to Ordering Guide ...........................................................55
7/09—Rev. A to Rev. B
ADE7763
Changes to Zero Crossing Detection Section ............................. 15
Changes to Period Measurement Section .................................... 16
Changes to Channel 1 RMS Offset Calculation Section ............ 22
Changes to Channel 1 RMS Offset Compensation Section ...... 22
Changes to Figure 48 ...................................................................... 23
Changes to Channel 2 RMS Calculation Section........................ 23
Changes to Table 11, Bit 15 Description ...................................... 51
Changes to Table 12, Bit 4 Description ........................................ 52
10/04—Data Sheet Changed from Rev. 0 to Rev. A
Changes to Period Measurement Section .................................. 16
Changes to Temperature Measurement Section ....................... 19
Change to Energy-to-Frequency Conversion Section ............. 28
Update to Figure 61....................................................................... 29
Change to Apparent Energy Calculation Section ..................... 32
Change to Description of AEHF and VAEHF Bits ................... 52
Changes to Ordering Guide ......................................................... 54
4/04—Revision 0: Initial Version
Rev. C | Page 3 of 56
ADE7763
SPECIFICATIONS
Data Sheet
AV
DD
= DV
DD
= 5 V ± 5%, AGND = DGND = 0 V, on-chip reference, CLKIN = 3.579545 MHz XTAL, T
MIN
to T
MAX
= –40°C to +85°C.
Table 1. Specifications
1, 2
Parameter
ENERGY MEASUREMENT ACCURACY
Active Power Measurement Error
Channel 1 Range = 0.5 V Full Scale
Gain = 1
Gain = 2
Gain = 4
Gain = 8
Channel 1 Range = 0.25 V Full Scale
Gain = 1
Gain = 2
Gain = 4
Gain = 8
Channel 1 Range = 0.125 V Full Scale
Gain = 1
Gain = 2
Gain = 4
Gain = 8
Active Power Measurement Bandwidth
Phase Error 1 between Channels
AC Power Supply Rejection
1
Output Frequency Variation (CF)
DC Power Supply Rejection
1
Output Frequency Variation (CF)
IRMS Measurement Error
IRMS Measurement Bandwidth
VRMS Measurement Error
VRMS Measurement Bandwidth
ANALOG INPUTS
3
Maximum Signal Levels
Input Impedance (dc)
Bandwidth
Gain Error
1, 3
Channel 1
Range = 0.5 V Full Scale
Range = 0.25 V Full Scale
Range = 0.125 V Full Scale
Channel 2
Offset Error 1
Channel 1
Channel 2
WAVEFORM SAMPLING
Channel 1
Signal-to-Noise Plus Distortion
Bandwidth (–3 dB)
Channel 2
Signal-to-Noise Plus Distortion
Bandwidth (–3 dB)
Spec
Unit
Test Conditions/Comments
CLKIN = 3.579545 MHz
Channel 2 = 300 mV rms/60 Hz, gain = 2
Over a dynamic range 1000 to 1
Over a dynamic range 1000 to 1
Over a dynamic range 1000 to 1
Over a dynamic range 1000 to 1
Over a dynamic range 1000 to 1
Over a dynamic range 1000 to 1
Over a dynamic range 1000 to 1
Over a dynamic range 1000 to 1
Over a dynamic range 1000 to 1
Over a dynamic range 1000 to 1
Over a dynamic range 1000 to 1
Over a dynamic range 1000 to 1
Line frequency = 45 Hz to 65 Hz, HPF on
AVDD = DVDD = 5 V + 175 mV rms/120 Hz
Channel 1 = 20 mV rms, gain = 16, range = 0.5 V
Channel 2 = 300 mV rms/60 Hz, gain = 1
AVDD = DVDD = 5 V ± 250 mV dc
Channel 1 = 20 mV rms/60 Hz, gain = 16, range = 0.5 V
Channel 2 = 300 mV rms/60 Hz, gain = 1
Over a dynamic range 100 to 1
Over a dynamic range 20 to 1
See the Analog Inputs section
V1P, V1N, V2N, and V2P to AGND
CLKIN/256, CLKIN = 3.579545 MHz
External 2.5 V reference, gain = 1 on Channels 1 and 2
V1 = 0.5 V dc
V1 = 0.25 V dc
V1 = 0.125 V dc
V2 = 0.5 V dc
Gain 1
Gain 16
Gain 1
Gain 16
Sampling CLKIN/128, 3.579545 MHz/128 = 27.9 kSPS
See the Channel 1 Sampling section
150 mV rms/60 Hz, range = 0.5 V, gain = 2
CLKIN = 3.579545 MHz
See the Channel 2 Sampling section
150 mV rms/60 Hz, gain = 2
CLKIN = 3.579545 MHz
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.1
0.1
0.2
0.2
14
±0.05
0.2
% typ
% typ
% typ
% typ
% typ
% typ
% typ
% typ
% typ
% typ
% typ
% typ
kHz
max
% typ
±0.3
0.5
14
0.5
140
±0.5
390
14
% typ
% typ
kHz
% typ
Hz
V max
k min
kHz
±4
±4
±4
±4
±32
±13
±32
±13
% typ
% typ
% typ
% typ
mV max
mV max
mV max
mV max
62
14
60
140
dB typ
kHz
dB typ
Hz
Rev. C | Page 4 of 56
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