ADE7763

Features:

High accuracy; supports IEC 61036/60687, IEC62053-21, and IEC62053-22
On-chip digital integrator enables direct interface-to-currentsensors with di/dt output
A PGA in the current channel allows direct interface toshunts and current transformers
Active and apparent energy, sampled waveform, and current and voltage rms
Less than 0.1% error in active energy measurement over adynamic 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




Pinout








Specifications



AVDD to AGND 0.3 V to +7 V
DVDD to DGND 0.3 V to +7 V
DVDD to AVDD0.3 V to +0.3 V
Analog Input Voltage to AGND6 V to +6 V
V1P, V1N, V2P, and V2N
Reference Input Voltage to AGND 0.3 V to AVDD + 0.3 V
Digital Input Voltage to DGND 0.3 V to DVDD + 0.3 V
Digital Output Voltage to DGND0.3 V to DVDD + 0.3 V
Operating Temperature Range
Industrial40°C to +85°C
Storage Temperature Range65°C to +150°C
Junction Temperature 150°C
20-Lead SSOP, Power Dissipation 450 mW
_JA Thermal Impedance 112°C/W
Lead Temperature, Soldering
Vapor Phase (60 s)215°C
Infrared (15 s)220°C




Description

The ADE7763 features proprietary ADCs and fixed functionDSP for high accuracy over large variations in environmental conditions and time. The ADE7763 incorporates two second-order, 16-bit -∆ 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 currentchannels. 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 apulse 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.