ADE7752B Datasheet | Analog Devices

FEATURES Polyphase Energy Metering IC with Pulsed Output ADE7752B The no-load threshold and reverse polarity indication are based on the sum of the three phase energies in the ADE7752B. The ADE7752B specifications surpass the accuracy requirements as quoted in the IEC62053-21 standard. The only analog circuitry used in the ADE7752B is in the analog-to-digital converters (ADCs) and reference circuit. All other signal processing (for example, 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 ADE7752B supplies average active power information on the low frequency outputs, F1 and F2. These logic outputs can be used to directly drive an electromechanical counter or to interface with an MCU. The CF logic output gives instantaneous active power information. This output is intended to be used for calibration purposes. The ADE7752B includes a power supply monitoring circuit on the VDD pin. The ADE7752B remains inactive until the supply voltage on VDD reaches 4 V. If the supply falls below 4 V, the ADE7752B also resets and 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 ADE7752B does not exhibit any creep when there is no load. The ADE7752B is available in a 24-lead SOIC package. High accuracy supports 50 Hz/60 Hz IEC62053-21 Less than 0.1% error over a dynamic range of 500 to 1 patible with 3-phase 3-wire delta and 3-phase 4-wire Wye configurations Supplies average active power on the frequency outputs F1 and F2 High frequency output (CF) is intended for calibration and supplies instantaneous active power Logic output REVP indicates a potential miswiring or negative power on the sum of all phases Direct drive for electromechanical counters and 2-phase stepper motors (F1 and F2) Proprietary ADCs...