Overview
The ADE7854ACPZ-RL, produced by Analog Devices Inc., is a high-accuracy, 3-phase electrical energy measurement IC. This integrated circuit is designed for measuring active, reactive, and apparent energy in various 3-phase configurations, including wye or delta services with both three and four wires. The device incorporates second-order sigma-delta (Σ-∆) analog-to-digital converters (ADCs), a digital integrator, reference circuitry, and a fixed function digital signal processor (DSP) to execute the necessary signal processing for energy measurements.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Device Primary Function | Polyphase Energy Monitoring IC | ||
| Active Energy Accuracy | 0.1 % | ||
| Data Output Interface | CF Pulses, HSDC, Serial I2C, Serial SPI | ||
| Measurements Available | Apparent Power, Irms, Total Active Power, Vrms | ||
| Operating Temperature Range | -40 to 85 °C | ||
| Voltage Supply Range | 2.4 V to 3.7 V | ||
| Current Supply | 20 mA | ||
| Package / Case | 40-WFQFN Exposed Pad, CSP | ||
| Input Impedance | 400 kOhm | ||
| Irms and Vrms Measurement Bandwidth | 2 kHz | ||
| Irms and Vrms Measurement Error (PSM0 Mode) | 0.1 % | Over a dynamic range of 1000 to 1, PGA = 1 |
Key Features
- High accuracy measurements of active, reactive, and apparent energy in 3-phase configurations.
- Second-order sigma-delta (Σ-∆) analog-to-digital converters (ADCs) and a digital integrator.
- Fixed function digital signal processor (DSP) for signal processing.
- System calibration features including rms offset correction, phase calibration, and gain calibration for each phase.
- Waveform sample registers allowing access to all ADC outputs.
- Power quality measurements such as short duration low or high voltage detections, high current variations, line voltage period measurement, and angles between phase voltages and currents.
- Serial interfaces: SPI and I2C, and a high-speed data capture (HSDC) port.
- Interrupt request pins (IRQ0 and IRQ1) to indicate enabled interrupt events.
- Low power modes (PSM1, PSM2) for the ADE7868 and ADE7878 models to ensure energy accumulation continuity during tampering situations.
Applications
- Smart energy meters and advanced metering infrastructure (AMI).
- Industrial power monitoring and control systems.
- Building automation and energy management systems.
- Grid management and power quality monitoring systems.
- Renewable energy systems and microgrids.
Q & A
- What is the primary function of the ADE7854ACPZ-RL?
The primary function is polyphase energy monitoring.
- What types of energy measurements can the ADE7854ACPZ-RL perform?
It can measure active, reactive, and apparent energy.
- What are the supported data output interfaces?
The device supports CF pulses, HSDC, Serial I2C, and Serial SPI.
- What is the operating temperature range of the ADE7854ACPZ-RL?
The operating temperature range is -40 to 85 °C.
- What is the voltage supply range for the ADE7854ACPZ-RL?
The voltage supply range is 2.4 V to 3.7 V.
- Does the ADE7854ACPZ-RL support waveform sampling?
Yes, it supports waveform sampling through waveform sample registers.
- What power quality measurements can the ADE7854ACPZ-RL perform?
It can measure short duration low or high voltage detections, high current variations, line voltage period, and angles between phase voltages and currents.
- Are there any low power modes available for the ADE7854ACPZ-RL?
Yes, for the ADE7868 and ADE7878 models, there are low power modes (PSM1, PSM2) to ensure energy accumulation continuity during tampering situations.
- What is the input impedance of the ADE7854ACPZ-RL?
The input impedance is 400 kOhm.
- What is the measurement error for Irms and Vrms in PSM0 mode?
The measurement error is 0.1% over a dynamic range of 1000 to 1, PGA = 1.
