AD71056
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 average real power on frequency outputs (F1, F2) High frequency output (CF) calibrates and supplies 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 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 m W typical) Low cost CMOS process
The AD71056 specifications surpass the accuracy requirements as quoted in the IEC62053-21 standard. The only analog circuitry used in the AD71056 is in the Σ-Δ ADCs and reference circuit. All other signal processing, such as multiplication...
