Analog Devices Inc. AD71056ARZ-RL

Description
The AD71056 is a high-accuracy electrical energy metering IC with an integrated oscillator, eliminating the need for an external crystal or resonator. It directly interfaces with a shunt resistor and provides average real power information on low-frequency outputs (F1, F2) for driving electromechanical counters or interfacing with MCUs. The high-frequency output (CF) provides instantaneous real power information for calibration purposes.

Features
Integrated oscillator as clock source
High accuracy, supporting 50 Hz/60 Hz IEC62053-21
Less than 0.1% error over a dynamic range of 500 to 1
Average real power on frequency outputs (F1, F2)
High-frequency output (CF) for calibration and instantaneous real power
Logic output (REVP) indicates potential miswiring or negative power
Direct drive for electromechanical counters and 2-phase stepper motors (F1, F2)
Proprietary ADCs and DSP for high accuracy over varying conditions
On-chip power supply monitoring
On-chip creep protection (no load threshold)
On-chip reference 2.45 V (20 ppm/°C typical) with external overdrive capability
Single 5 V supply, low power (20 mW typical)
Low-cost CMOS process

Applications
Electrical energy metering
Power monitoring
Energy management systems
Industrial automation
Smart grid applications