ADI ADE7752AARZ

The ADE7752 is a high accuracy polyphase electrical energy measurement IC. The ADE7752A is a pin-to-pin compatible low power version of ADE7752. The functions of ADE7752 and ADE7752A are the same. The part specifications surpass the accuracy requirements as quoted in the IEC62053-2x standard. The only analog circuitry used in the ADE7752 is in the analog-to-digital converters (ADCs) and reference circuit. All other signal processing (such as multiplication, filtering, and summation) is carried out in the digital domain. This approach provides superior stability and accuracy over extremes in environmental conditions and over time. The ADE7752 supplies average real power information on the low frequency outputs, F1 and F2. These logic outputs may be used to directly drive an electromechanical counter or to interface with an MCU. The CF logic output gives instantaneous real power information. This output is intended to be used for calibration purposes. The ADE7752 includes a power supply monitoring circuit on the VDD pin. The ADE7752 remains inactive until the supply voltage on VDD reaches 4 V. If the supply falls below 4 V, no pulses are issued on F1, F2, and CF. Internal phase matching circuitry ensures that the voltage and current channels are phase matched. An internal no load threshold ensures the part does not exhibit any creep when there is no load. The ADE7752 is available in a 24-lead SOIC package.

• High accuracy, supports 50 Hz/60 Hz IEC62053-2x
• Less than 0.7% error over a dynamic range of 500 to 1
• Compatible with 3-phase/3-wire delta and 3-phase/4-wire Wye configurations
• The ADE7752 supplies average real power on frequency outputs F1 and F2
• High frequency output CF is intended for calibration and supplies instantaneous real power
• Logic output REVP indicates a potential miswiring or negative power for each phase
• Direct drive for electromechanical counters and 2-phase stepper motors (F1 and 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 2.4 V ±8% (20 ppm/°C typical) with external overdrive capability
• Single 5 V supply, low power 60 mW typical: ADE7752 30 mW typical: ADE7752A
• Low cost CMOS process