The ATT7026E user manual from Hitrend Tech details features, pin definitions, registers, SPI interface and electrical specifications of the three‑phase…
The ATT7026E is a high‑precision three‑phase metering chip designed for three‑wire and four‑wire applications. It integrates six second‑order sigma‑delta ADCs, reference circuitry and digital signal processing to measure active, reactive, apparent power, energy, voltage/current RMS, power factor, phase angle and frequency.
The manual covers chip features, pin‑out diagrams, module descriptions, SPI communication details, register maps, calibration procedures and full electrical characteristics, providing everything needed for hardware designers and firmware developers to integrate the device. This manual is written in Chinese.
| Supply Voltage (VCC) | 3.0 – 3.6 V |
|---|---|
| Analog Supply Voltage (AVCC) | 3.0 – 3.6 V |
| ADC Input Voltage Range | ±710 mV |
| Active Power Measurement Error | 0.1 % |
| Reactive Power Measurement Error | 0.1 % |
| Voltage RMS Measurement Accuracy | 0.1 % – 0.5 % |
| Current RMS Measurement Accuracy | 0.1 % – 0.5 % |
| Operating Temperature Range | -40 °C to 85 °C |
| Storage Temperature Range | -65 °C to 150 °C |
It integrates six second‑order sigma‑delta ADC channels.