Energy Metering IC with Pulse OutputData SheetADE7755FEATURESGENERAL DESCRIPTIONHigh accuracy, surpasses 50 Hz/60 Hz IEC 687/IEC 1036 The ADE7755 is a high accuracy electrical energy measurement Less than 0.1% error over a dynamic range of 500 to 1 IC. The part specifications surpass the accuracy requirements Supplies active power on the frequency outputs, F1 and F2 as quoted in the IEC 1036 standard. High frequency output CF is intended for calibration and The only analog circuitry used in the ADE7755 is in the ADCs supplies instantaneous active power and reference circuit. All other signal processing (for example, Synchronous CF and F1/F2 outputs multiplication and filtering) is carried out in the digital domain. Logic output REVP provides information regarding the sign This approach provides superior stability and accuracy over of the active power extremes in environmental conditions and over time. Direct drive for electromechanical counters and 2-phasestepper motors (F1 and F2) The ADE7755 supplies average active power information on Programmable gain amplifier (PGA) in the current channel the low frequency outputs, F1 and F2. These logic outputs can facilitates usage of small shunts and burden resistors be used to directly drive an electromechanical counter or interface Proprietary ADCs and DSPs provide high accuracy over large to an MCU. The CF logic output gives instantaneous active variations in environmental conditions and time power information. This output is intended to be used for On-chip power supply monitoring calibration purposes or for interfacing to an MCU. On-chip creep protection (no load threshold) The ADE7755 includes a power supply monitoring circuit on the On-chip reference 2.5 V ± 8% (30 ppm/°C typical) with AVDD supply pin. The ADE7755 remains in a reset condition until external overdrive capability the supply voltage on AVDD reaches 4 V. If the supply falls below Single 5 V supply, low power (15 mW typical) 4 V, the ADE7755 resets and no pulse is issued on F1, F2, and CF. Low cost CMOS process Internal phase matching circuitry ensures that the voltage and