BL0942 calibration-free Metering IC Datasheet
●BL0942 is a built-in clock calibration-free energy metering IC, which is suitable for single-phase multi-function electricity meters, smart sockets, smart home appliances and other applications, with more cost-efficient solution.
●BL0942 incorporates two sigma delta ADC with a high accuracy energy measurement core. It measures line voltage and current and calculate active energy as well as instantaneous voltage and current.
●BL0942 provides access to on-chip registers via UART/SPI interfaces. One configurable low jitter pulse output Pin provide pulse that is proportional to active energy. Zero-crossing voltage (ZX_V), zero-crossing current (ZX_I) and overcurrent are accessible via the external pin.
●BL0942 has a patent active power no-load detection to prevent meter-creep.
■Features:
●Two independent Sigma-Delta ADC, one current and one voltage.
●Less than 0.1% error in active energy measurement over a dynamic range of 4000:1
●Current RMS range (10mA ~ 30A) @ 1mOhm
●Measure current, voltage RMS, fast current RMS, active power, sampled waveform
●The batch factory gain error is less than 1%, and the peripheral components can be free of calibration under certain conditions
●Programmable over-current detection
●ZX_V/ZX_I output
●Provide sampled waveform data for load type analysis
●SPI (maximum speed 900kHz)/ UART (4800~38400bps) communication(BL0942 TSSOP14L supports cascading up to 4 ICs through UART communication)
●On-chip power supply monitor
●On-chip reference 1.218v(typical)
●On-chip oscillator as clock source
●Single 3.3V supply, low power consumption 10mW (typical)
●SSOP10L/TSSOP14L package
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calibration-free Metering IC 、 built-in clock calibration-free energy metering IC |
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[ single-phase multi-function electricity meters ][ smart sockets ][ smart home appliances ] |
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Datasheet |
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Please see the document for details |
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SSOP10L;TSSOP14L |
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English Chinese Chinese and English Japanese |
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2023/8/18 |
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V1.06 |
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2 MB |
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