SSP1837 is a wide range of single-phase multi-function energy meter IC for single-phase socket, single-phase strip, Smart Appliance, with a low cost and high accuracy. SSP1837 integrates two high-accuracy Sigma-Delta ADC, voltage reference, power management and other analog circuit modules, and digital signal processing circuit to calculate active power, IRMS, VRMS etc. High frequency CF1 is provided for indicating IRMS/VRMS and high frequency CF for energy metering. SSP1837 can measure the single-phase active energy, active power, current and voltage RMS and other parameters to fully meet the needs of the socket, power strip, smart appliances and others.
Features
- High accuracy, less than ± 0.5% error over a dynamic range of 2500: 1
- High stability of large signal, in the condition of signal 300mA, less than ±0.2% error in the output frequency fluctuation (CF)
- High stability of small signal, in the condition of signal 50mA, less than ±0.3% error in the output frequency fluctuation (CF)
- Current and voltage RMS, current measurement range (4mA ~ 30A) @1mohm
- On-Chip anti-creep protection，Ensure noise power removal when there is no current
- On-Chip power supply detector.Detect power down state，the chip goes into a reset state when the operating voltage drops below 2.7V
- On-Chip voltage reference of 1.2V(typical)
- On-chip oscillator as clock source，the clock about 2 MHZ
- Single 3.3V supply, low power (8 mW typical)
- Package：SOP8
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Application：
- Electric instrument
- Intelligent socket, intelligent circuit breaker
- Intelligent electric energy acquisition terminal
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