This application guide covers the features, pinout, calibration methods, and PCB design considerations for the Belling BL0937 smart socket metering chip.
The Belling BL0937 is a dedicated chip developed for energy measurement in the smart home field. It features a small SOP8 package, simple peripheral circuits, and low cost. The chip measures a range of 5mA to 20A (1W to 2500W) with a power consumption of 1.7mA and a signal response time of less than 300ms. It operates at a working voltage of 3.3V with a drop protection of 2.7V±50mV. This manual is written in Chinese.
| Measurement Range | 5mA~20A (1W~2500W) |
|---|---|
| Power Consumption | 1.7mA |
| Signal Response Time | <300ms |
| Working Voltage | 3.3V |
| Package Type | SOP8 |
The working voltage is 3.3V, with a drop protection of 2.7V±50mV.
It is recommended to use a single-point calibration method by applying rated voltage, current, and power to measure the corresponding pulse frequencies and calculate conversion coefficients.