ADE7880ACPZ-RL

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1. DESCRIPTION

The ADE7880ACPZ-RL is a high accuracy, 3-phase electrical energy measurement IC with serial interfaces and three flexible pulse outputs. The ADE7880ACPZ-RL device incorporates second-order sigmadelta (Σ-Δ) analog-to-digital converters (ADCs), a digital integrator, reference circuitry, and all of the signal processing required to perform the total (fundamental and harmonic) active, and apparent energy measurements, rms calculations, as well as fundamental-only active and reactive energy measurements. In addition, the ADE7880ACPZ-RL computes the rms of harmonics on the phase and neutral currents and on the phase voltages, together with the active, reactive and apparent powers, and the power factor and harmonic distortion on each harmonic for all phases. Total harmonic distortion (THD) is computed for all currents and voltages. A fixed function digital signal processor (DSP) executes this signal processing. The DSP program is stored in the internal ROM memory. The ADE7880ACPZ-RL is suitable for measuring active, reactive, and apparent energy in various 3-phase configurations, such as wye or delta services with, both, three and four wires. The ADE7880ACPZ-RL provides system calibration features for each phase, that is, rms offset correction, phase calibration, and gain calibration. The CF1, CF2, and CF3 logic outputs provide a wide choice of power information: total active powers, apparent powers, or the sum of the current rms values, and fundamental active and reactive powers. The ADE7880ACPZ-RL contains waveform sample registers that allow access to all ADC outputs. The devices also incorporate power quality measurements, such as short duration low or high voltage detections, short duration high current variations, line voltage period measurement, and angles between phase voltages and currents. Two serial interfaces, SPI and I2C, can be used to communicate with the ADE7880ACPZ-RL. A dedicated high speed interface, the high speed data capture (HSDC) port, can be used in conjunction with I2C to provide access to the ADC outputs and real-time power information. The ADE7880ACPZ-RL also has two interrupt request pins, IRQ0 and IRQ1, to indicate that an enabled interrupt event has occurred. Three specially designed low power modes ensure the continuity of energy accumulation when the ADE7880 is in a tampering situation. The ADE7880 is available in the 40-lead LFCSP, Pb-free package, pin-for-pin compatible with ADE7854, ADE7858, ADE7868, and ADE7878 devices. 

2. FEATURES

    1. Highly accurate; supports IEC 62053-21, IEC 62053-22, IEC 62053-23, EN 50470-1, EN 50470-3, ANSI C12.20, and IEEE1459 standards

    2. Supports IEC 61000-4-7 Class I and Class II accuracy specification

    3. Compatible with 3-phase, 3-wire or 4-wire (delta or wye), and other 3-phase services

    4. Supplies rms, active, reactive, and apparent powers, power factor, THD, and harmonic distortion of all harmonics within 2.8 kHz pass band on all phases

    5. Supplies rms and harmonic distortions of all harmonics within 2.8 kHz pass band on neutral current

    6. Less than 1% error in harmonic current and voltage rms, harmonic active and reactive powers over a dynamic range of 2000 to 1 at TA = 25°C

    7. Supplies total (fundamental and harmonic) active and apparent energy and fundamental active/reactive energy on each phase and on the overall system

    8. Less than 0.1% error in active and fundamental reactive energy over a dynamic range of 1000 to 1 at TA = 25°C

    9. Less than 0.2% error in active and fundamental reactive energy over a dynamic range of 5000 to 1 at TA = 25°C

  10. Less than 0.1% error in voltage and current rms over a dynamic range of 1000 to 1 at TA = 25°C

  11. Battery supply input for missing neutral operation

  12. Wide supply voltage operation: 2.4 V to 3.7 V

  13. Reference: 1.2 V (drift 20 ppm/°C typical) with external overdrive capability

  14. 40-lead lead frame chip scale package (LFCSP), Pb-free, pinfor-pin compatible with ADE7854, ADE7858, ADE7868 and ADE7878

3. APPLICATIONS

    1. Energy metering systems

    2. Power quality monitoring

    3. Solar inverters

    4. Process monitoring

    5. Protective devices