AD71056ARZ

The AD71056ARZ is a kind of high accuracy, electrical energy metering IC with a precise oscillator circuit that serves as a clock source to the chip. The AD71056 eliminates the need for an external crystal or resonator, thus reducing the overall cost of building a meter with this IC. The chip directly interfaces with the shunt resistor.

Features of the AD71056ARZ are:(1)on-chip oscillator as clock source; (2)high accuracy, supports 50 Hz/60 Hz IEC62053-21; (3)less than 0.1% error over a dynamic range of 500 to 1; (4)supplies average real power on frequency outputs (F1, F2); (5)high frequency output (CF) calibrates and supplies instantaneous real power; (6)logic output (REVP) indicates potential miswiring or negative power; (7)direct drive for electromechanical counters and 2-phase stepper motors (F1, F2); (8)proprietary ADCs and DSP provide high accuracy over large variations in environmental conditions and time; (9)on-chip power supply monitoring; (10)on-chip creep protection (no load threshold); (11)on-chip reference 2.45 V (20 ppm/°C typical) with external overdrive capability; (12)single 5 V supply, low power (20 mW typical); (13)low cost CMOS process.

The absolute maximum ratings of the AD71056ARZ can be summarized as:(1): VDD to AGND is 0.3 V to +7 V; (2): VDD to DGND is 0.3 V to +7 V; (3): analog input voltage to AGND V1P, V1N, V2P, and V2N is 6 V to +6 V; (4): reference input voltage to AGND is 0.3 V to VDD + 0.3 V; (5): digital input voltage to DGND is 0.3 V to VDD + 0.3 V; (6): digital output voltage to DGND is 0.3 V to VDD + 0.3 V; (7): operating temperature range is 40°C to +85°C; (8): storage temperature range is 65°C to +150°C; (9): junction temperature is 150°C; (10): 16-lead plastic SOIC, power dissipation is 350 mW.