SCE7755

SCE7755 Energy Metering IC with Pulse Output SCE7755 FEATURES High Accuracy, Surpasses 50 Hz/60 Hz IEC 687/1036 Less than 0.1% Error over a Dynamic Range of 500 to 1 The SCE7755 Supplies Average Real Power on the Frequency Outputs F1 and F2 The High-Frequency Output CF Is Intended for Calibration and Supplies Instantaneous Real Power Pin Compatible with AD7755 with Synchronous CF and F1/F2 Outputs The Logic Output REVP Can Be Used to Indicate a Potential Miswiring or Negative Power Direct Drive for Electromechanical Counters and Two Phase Stepper Motors (F1 and F2) A PGA in the Current Channel Allows the Use of Small Values of Shunt and Burden Resistance 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 2.5 V 8% (30 ppm/C Typical) with External Overdrive Capability Single 5 V Supply, Low Power (15 mW Typical) Low Cost CMOS Process SCE7755 GENERAL DESCRIPTION The SCE7755 is pin compatible with the AD7755. The only difference between the SCE7755 and the AD7755 is that the SCE7755 features a synchronous CF and F1/F2 outputs under all load conditions. The SCE7755 is a high accuracy electrical energy measurement IC. The part specifications surpass the accuracy requirements as quoted in the IEC1036 standard. See Analog Devices’ Application Note AN-559 for a description of an IEC1036 watt-hour meter reference design based on the AD7...