The ADE7753ARSZ is a Single-phase Multifunction Metering IC with di/dt sensor interface featuring proprietary ADCs and DSP for high accuracy over large variations in environmental conditions and time. It incorporates two second-order 16-bit Σ-Δ ADCs, a digital integrator (on CH1), reference circuitry, temperature sensor and all the signal processing required to perform active, reactive and apparent energy measurements, 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 analogue integrator and resulting in excellent long-term stability and precise phase matching between the current and voltage channels. 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.
● High accuracy
● 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 1000:1 at 25°C
● Positive-only energy accumulation mode available
● On-chip user programmable threshold for line voltage surge and SAG and PSU supervisory
● On-chip temperature sensor (±3°C typical)
● SPI®-compatible serial interface
● Pulse output with programmable frequency
● Interrupt request pin (IRQ) and status register
●ESD sensitive device, take proper precaution while handling the device.
