The ADE7763 series Active and Apparent Energy Metering IC that features proprietary ADCs and fixed function DSP for high accuracy over large variations in environmental conditions and time. The device incorporates two second-order, 16-bit Σ-∆ ADCs, a digital integrator, 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. 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.
● 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
● 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 2.4V with external overdrive capability
● 25mW (typical) Low power
