ADE7753*

Features:

High Accuracy, supports IEC 61036 and IEC61268
On-Chip Digital Integrator enables direct interface with current sensors with di/dt output
The ADE7753 supplies Active, Reactive and Apparent Energy, Sampled Waveform, Current and Voltage RMS
Less than 0.1% error over a dynamic range of 1000 to 1
Positive only energy accumulation mode available
An On-Chip user Programmable threshold for line voltage surge and SAG, and PSU supervisory
Digital Power, Phase & Input Offset Calibration
An On-Chip temperature sensor (±3°C typical)
A SPI compatible Serial Interface
A pulse output with programmable frequency
An Interrupt Request pin (IRQ) and Status register
Proprietary ADCs and DSP provide high accuracy data over large variations in environmental conditions and time
Reference 2.4V±8% (20 ppm/°C typical) with external overdrive capability
Single 5V Supply, Low power (25mW typical)


Pinout




Specifications

AV_DD  to  AGND . . . . . . . . . . . . . . . . . . . . .   0.3 V    to  +7 V
DV_DD  to  DGND  . . . . . . . . . . . . . . . . . . . .   0.3 V    to  +7 V
DV_DD toAVDD  . . . . . . . . . . . . . . . . . . . . .  0.3 V    to  +0.3 V
Analog Input Voltage to AGND
V_1P, V_1N,  V_2P   and V_2N  . . . . . . . . . . . . . . . . . .  - 6V to +6V
Reference Input Voltage to AGND . . . 0.3 V to AV_DD +0.3 V
Digital Input Voltage to  DGND  . . .   0.3 V to DV_DD + 0.3 V
Digital Output Voltage to  DGND. . .   0.3 V to DV_DD + 0.3 V
Operating Temperature Range
Industrial  . . . . . . . . . . . . . . . . . . . . . . . .    40°C to +85°C


Description

The ADE7753 is an accurate active and apparent energy measurements IC with a serial interface and a pulse output. The ADE7753 incorporates two second order sigma delta ADCs, a digital integrator (on CH1), reference circuitry, temperature sensor, and all the signal processing required to perform RMS calculation on the voltage and current, active, reactive, and apparent energy measurement.

An on-chip digital integrator provides direct interface to di/dt current sensors such as Rogowski coils. The digital integrator eliminates the need for external analog integrator, and this solution provides excellent long-term stability andprecise phase matching between the current and voltage channels. The integrator can be switched on and off based on the current sensor selected. It contains an Active Energy register. It is capable of holding more than 200 seconds of accumulated power at full load. Data is read from the ADE7753 via the serial interface. The ADE7753 also provides a pulse output (CF) with output frequency is proportional to the active power. In addition to rms calculation and active and apparent power information, the ADE7753 also accumulates the signed reactive energy. The ADE7753 also provides various system calibration features, i.e., channel offset correction, phase calibration and power calibration. The part also incorporates a detection circuit for short duration low or high voltage variations.