ATT7022C is an upgraded version of ATT7022B. It retains all the functions of ATT7022B and adds ADC sampling data caching function, so that users do not need to generate interrupt frequently to read real-time ADC data. ATT7022C also enhances the accuracy of small signal current effective value.
This manual describes the ATT7022C device, an upgraded version of the ATT7022B, adding an ADC sampling data cache of 240 samples and improving current RMS small‑signal precision. It supports single, dual, or triple channel synchronous sampling and provides methods for high‑precision voltage‑angle calculation.
The document includes register definitions, command formats for SPI access, recommended FFT processing flow, and example sampling configurations. It also presents interpolation FFT simulation results and sample application examples for various channel setups. This manual is written in Chinese.
| ADC sample data cache length | 240 |
|---|---|
| Supported sampling channels | 1‑3 channels |
| Current RMS small‑signal precision enhancement | Enabled |
| Startup current default register value | 0x0001F0 |