The Hitrend Tech ATT7021C User Manual provides features, pin descriptions, electrical specifications, and application guidelines for the energy‑metering chip.
The ATT7021C is an improved version of the ATT7021 energy‑metering IC, offering lower power consumption, better VREF consistency, and full pin compatibility with the ATT7021 and ADE7755. It is intended for use in electric energy measurement devices.
The manual covers the chip’s key features, pin‑out diagram, electrical parameters, measurement accuracy, anti‑aliasing filter design, PCB layout recommendations, and application notes such as pulse‑output calculations and calibration procedures. This manual is written in Chinese.
| Operating temperature range | -40 °C to +85 °C |
|---|---|
| Digital supply voltage (DDDV) | -0.3 V to +7 V |
| Analog supply voltage (ADDV) | -0.3 V to +7 V |
It operates from –40 °C up to +85 °C.
The chip is offered in a 24‑pin DIP package and an SSOP package.