BL0942 is a built-in clock calibration-free energy metering chip. BL0942 integrates 2 high-precision Sigma-Delta ADCs, analog circuit modules such as reference voltage and power management, and digital signal processing for active power, current, voltage RMS, and other electrical parameters circuits.

BL0942 can measure parameters such as current, voltage RMS, active power, electric energy, etc. It can output fast current RMS (for overcurrent protection), waveform output, and other functions. It can output data through the UART/SPI interface, which can fully meet the needs of intelligent The needs of sockets, smart home appliances, single-phase multi-function energy meters, and big data collection of electricity consumption information.

Features:

·Current RMS range (10mA~30A)@1mohm;

·Active energy (1w~6600w)@1mohm@220V;

·It can output current, voltage RMS, and fast current RMS;

·The current channel has an overcurrent monitoring function, and the monitoring threshold and response time can be set;

·Voltage/current zero-crossing signal output;

·Built-in waveform register, which can output waveform data for load type analysis;

·Power down monitoring, when the voltage is lower than 2.7V, the chip enters the reset state;

·Built-in 1.218V reference voltage source;

·Built-in oscillator circuit, the clock is about 4MHz;

·The single working power supply of the chip is 3.3V, and the low power consumption is 10mW (typical value);

·SSOP10L package.