Energy Metering IC 7700W 16Pin SOP - BL0939-SOP16L

BL(Shanghai Belling)

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BL0939 is a calibration-free energy metering chip with a built-in clock. It is suitable for applications such as single-phase multi-function energy meters, smart sockets, smart home appliances, and electric bicycle charging piles. BL0939 integrates 3 high- precision Sigma-Delta ADCs , which can measure 2 currents and 1 voltage at the same time.
BL0939 can measure current, voltage RMS, active power, active energy and other parameters, and can output fast current RMS ( for leakage monitoring or overcurrent protection ) , as well as temperature detection, waveform output and other functions, output through UART/SPI interface.

  • Three independent Sigma-Delta ADCs for measuring two currents and one voltage.
  • RMS current range ( 10mA~35A ) @1mohm
  • Active energy ( 1w~7700w ) @1mohm@220V
  • Can output current, voltage RMS, fast current RMS, active power, current and voltage waveform phase angle
  • batch factory gain error is less than 1% , and the external components can be exempted from calibration if they meet certain conditions
  • Both current channels have leakage / overcurrent monitoring function, monitoring threshold and response time can be set
  • Voltage zero-crossing signal output
  • Built-in waveform register, which can output waveform data for load type analysis
  • Integrated temperature sensor to meet the needs of product over-temperature monitoring, high-current node preset temperature alarm, ambient temperature measurement, etc.
  • Internal power down monitoring, below 2.7V , the chip enters the reset state.
  • Built-in 1.218V reference voltage source
  • Built-in oscillation circuit, the clock is about 4MHz
  • Chip single working power supply 3.3V , low power consumption 10mW ( typical value )
  • SOP16L encapsulation

Extra Information

BL(Shanghai Belling)
Number of Pins:
Surface Mount
Operating Voltage:

Warranty Information

All the products supplied by Evelta are genuine and original. We offer 14 days replacement warranty in case of manufacturing defects. For more details, please visit our cancellation and returns page.