ADE7858ACPZ Energy Metering ICs by Analog Devices

Energy Metering ICs
Status: Production
Series: ADE7858
RoHS: Compliant
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The ADE7854 / ADE7858 / ADE7868 / ADE7878 are high accuracy, 3-phase electrical energy measurement ICs with serial interfaces and three flexible pulse outputs. The ADE78xx devices incorporate second-order sigma-delta (Σ-∆) analog-to-digital converters (ADCs), a digital integrator, reference circuitry, and all of the signal processing required to perform total (fundamental and harmonic) active, reactive (ADE7878, ADE7868, and ADE7858), and apparent energy measurement and rms calculations, as well as fundamental-only active and reactive energy measurement (ADE7878) and rms calculations. A fixed function digital signal processor (DSP) executes this signal processing. The DSP program is stored in the internal ROM memory.The ADE7854 / ADE7858 / ADE7868 / ADE7878 are 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 ADE78xx devices provide 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, reactive, and apparent powers, or the sum of the current rms values, and fundamental active and reactive powers.The ADE7854 / ADE7858 / ADE7868 / ADE7878 contain 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 ADE78xx. 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 ADE7854 / ADE7858 / ADE7868 / ADE7878 also have two interrupt request pins, IRQ0 and IRQ1, to indicate that an enabled interrupt event has occurred. For the ADE7868 / ADE7878, three specially designed low power modes ensure the continuity of energy accumulation when the ADE7868 / ADE7878 is in a tampering situation.

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Features

Highly accurate; supports EN 50470-1, EN 50470-3, IEC 62053-21, IEC 62053-22, and IEC 62053-23 standards
Compatible with 3-phase, 3- or 4-wire (delta or wye), and other 3-phase services
Supplies total (fundamental and harmonic) active, reactive (ADE7878, ADE7868, and ADE7858 only), and apparent energy, and fundamental active/reactive energy (ADE7878 only) on each phase and on the overall system
Less than 0.1% error in active and reactive energy over a dynamic range of 1000 to 1 at TA = 25°C
Less than 0.2% error in active and reactive energy over a dynamic range of 3000 to 1 at TA = 25°C
Supports current transformer and di/dt current sensors
Dedicated ADC channel for neutral current input (ADE7868 and ADE7878 only)
Less than 0.1% error in voltage and current rms over a dynamic range of 1000 to 1 at TA = 25°C
Supplies sampled waveform data on all three phases and on neutral current
Selectable no load threshold levels for total and fundamental active and reactive powers, as well as for apparent powers
Low power battery mode monitors phase currents for antitampering detection (ADE7868 and ADE7878 only)
Battery supply input for missing neutral operation
Phase angle measurements in both current and voltage channels with a typical 0.3° error
Wide-supply voltage operation: 2.4 V to 3.7 V
Reference: 1.2 V (drift +5 ppm/°C typical) with external overdrive capability
Single 3.3 V supply
40-lead lead frame chip scale package (LFCSP), Pb-free
Operating temperature: −40°C to +85°C
Flexible I2C, SPI, and HSDC serial interfaces

Frequently Asked Questions

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Additional datasheets, footprints and schematics for ADE7858ACPZ are listed on our Part Details page. You can also find images and similar parts to ADE7858ACPZ on this page.

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What category does ADE7858ACPZ fall under?

The ADE7858ACPZ is listed under Energy Metering ICs.

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Is the ADE7858ACPZ RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

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