BL0940 Calibration-free Metering IC Datasheet
●BL0940 is a built-in clock and calibration-free energy metering IC, suitable for single-phase multifunctional electricity meter, smart socket, smart home appliances, electric bicycle charging pile and other applications with better cost performance.
●BL0940 integrates 2 high-precision sigma-delta ADCs to measure current and voltage simultaneously. It can measure electric parameters such as current and voltage RMS, active power, active energy,fast current RMS (for over-current protection), and temperature detection, waveform output and so on. BL0940 output data through the UART or SPI interface. It is available for the smart socket, smart appliances, single-phase multi-function power meter, electric bicycle charging pile and information requirement of data acquisition in electricity applications.
●BL0940 has a patented anti-creep design, which can be combined with reasonable external hardware design to ensure that the noise energy cannot be calculated in the energy pulse when there is no load
■Features:
●2 high-precision sigma-delta ADCs for current and voltage measuring
●The range of current（10mA~35A）@1mohm
●The range of Active energy（1w~7700w）@1mohm@220V
●Measure RMS Voltage and Current, fast current RMS, Active Power,Active Energy
●The gain error is less than 1%, calibration-free when peripheral components meet certain conditions.
●the current channel support over-current monitoring function, the threshold and response time can be configured.
●Voltage zero-Crossing logic output
●Built-in waveform register for load type analysis
●Built-in temperature sensor
●SPI（≤900KHz）/UART（4800bps）
●On-chip power supply monitoring, IC reset when VDD is lower than 2.7V(typical).
●On-chip voltage reference of 1.218V
●On-chip 4MHz oscillator circuit
●Power supply 3.3v, low power consumption 10mW (typical)
●TSSOP14
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Calibration-free Metering IC 、 built-in clock and calibration-free energy metering IC |
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[ single-phase multifunctional electricity meter ][ smart socket ][ smart home appliances ][ electric bicycle charging pile ] |
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Datasheet |
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Please see the document for details |
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TSSOP14 |
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English Chinese Chinese and English Japanese |
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2019/12/25 |
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Version V1.1 |
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728 KB |
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