The ADE7752/ADE7752A is a high accuracy polyphase electrical energy measurement IC. It supports 50Hz/60Hz IEC62053-2x standard. The dynamic range is 500 to 1. It can be compatible with 3-phase/3-wire delta and 3-phase/4-wire Wye configurations. ADE77521 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. It can be directly driven by 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 and creep protection are also included. The reference voltage is 2.4V ±8%(20 ppm/°C typical) with external overdrive capability. It is powered by a single 5V supply. The power consumption is low (60 mW typical: ADE7752 30 mW typical: ADE7752A). It is fabricated using a low cost CMOS process.
The ADE7752 and ADE7752A are high‑accuracy polyphase energy‑metering ICs that provide average real‑power information on low‑frequency outputs (F1, F2) and instantaneous real‑power information on a high‑frequency output (CF). They operate from a single 5 V supply, include on‑chip reference and power‑supply monitoring, and support both delta and wye three‑phase configurations.
The document includes specifications, pin descriptions, timing diagrams, typical performance graphs, and application notes such as frequency‑selection, no‑load threshold, and negative‑power detection, plus ordering information for the 24‑lead SOIC package.
| Supply Voltage (Vop) | 5 V ±5 % |
|---|---|
| On‑chip Reference Voltage | 2.4 V |
| Operating Temperature Range | -40 °C to +85 °C |
| Typical Power Consumption (ADE7752) | 60 mW |
| Typical Power Consumption (ADE7752A) | 30 mW |
| Input Impedance (Analog Inputs) | 370 Ω |
The CF logic output gives instantaneous real‑power information and is intended for calibration purposes.
REVP goes high when negative power is detected on any phase, indicating a phase‑angle greater than 90° or a wiring error.