ADE7768

www.DataSheet4U.com Energy Metering IC with Integrated Oscillator and Positive Power Accumulation ADE7768 FEATURES On-chip oscillator as clock source High accuracy, supports 50 Hz/60 Hz IEC62053-21 Less than 0.1% error over a dynamic range of 500 to 1 Supplies positive-only average real power on frequency outputs F1 and F2 High frequency output CF calibrates and supplies instantaneous, positive-only real power Logic output REVP indicates potential miswiring or negative power Direct drive for electromechanical counters and 2-phase stepper motors (F1 and F2) Proprietary ADCs and DSPs provide high accuracy over large variations in environmental conditions and time 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 The ADE7768 specifications surpass the accuracy requirements of the IEC62053-21 standard. The AN-679 Application Note can be used as a basis for a description of an IEC61036 (equivalent to IEC62053-21) low cost, watt-hour meter reference design. The only analog circuitry used in the ADE7768 is in the Σ-Δ ADCs and reference circuit. All other signal processing, such as multiplication and filtering, is carried out in the digital domain. This approach provides superior stability and accuracy over time and extreme environmental conditions. The ADE7768 supplies positive-only average real power informat...