Power Metering Circuit

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SSP1842

SSP1842 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. SSP1842 integrates 2 high-precision Sigma-Delta ADC to measure current and voltage simultaneously. Reference voltage, power management and other analog circuit modules, and processing active power, current and voltage RMS electrical parameters digital signal processing circuit. SSP1842 can measure electric parameters such as current and voltage RMS, active power, active energy, fast current RMS (for over-current protection), and waveform output and so on. SSP1842 output data through the UART/SPI interface. It is available for the smart socket, smart appliances, single-phase multi-function power meter and information requirement of data acquisition in electricity applications. SSP1842 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.

SSP1840

SSP1840 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. SSP1840 integrates 2 high-precision sigma-delta ADC to measure current and voltage simultaneously. Reference voltage, power management and other analog circuit modules, and processing active power, current and voltage RMS electrical parameters digital signal processing circuit. SSP1840 can measure electric parameters such as current and voltage RMS, active power, active energy, fast current RMS (for leakage detection/over-current protection), and temperature detection, waveform output and so on. SSP1840 output data through the UART/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. SSP1840 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.

SSP1839

SSP1839 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. SSP1839 integrates 3 high-precision sigma-delta ADC, it can measure two channel of current and one channel of voltage simultaneously. SSP1839 can measure electric parameters such as current and voltage RMS, active power, active energy, fast current RMS (for leakage detection/over-current protection), and temperature detection, waveform output and so on. SSP1839 output data through the UART/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. SSP1839 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.

SSP1880

The SSP1880 is a highly accurate three-phase power measurement integrated circuit with technical specifications that meet the accuracy requirements specified in IEC62053. The SSP1880 uses analogue circuitry only for the ADC and reference source, and digital circuitry for all other signal processing (such as multiplication and filtering), which allows the SSP1880 to maintain extremely high accuracy and long-term stability under harsh environmental conditions. The SSP1880 pins F1 and F2 output the average value of active power at a lower frequency and can be used to directly drive electromechanical meters or to interface with microcontrollers (MCUs). Pin CF outputs an instantaneous value of active power at a higher frequency for calibration or interfacing with an MCU. The SSP1880 contains an internal monitoring circuit for the VDD power supply pin. The SSP1880 remains in reset until VDD rises to 4V. When VDD falls below 4V, the SSP1880 is also reset, at which point there are no outputs from F1, F2, or CF. Internal phase matching circuitry enables the voltage and current channels to always be phase-matched, and internal no-load threshold characteristics ensure that the SSP1880 has no latency at no-load. The SSP1880 is available in a 16-pin SOP package.

SSP1855

The SSP1855 is a high accuracy electrical energy measurement integrated circuit with technical specifications that meet the accuracy requirements specified in IEC1036. The SSP1855 uses analogue circuitry only for the ADC and reference source, and digital circuitry for all other signal processing (such as multiplication and filtering), which allows the SSP1855 to maintain extremely high accuracy and long-term stability in harsh environmental conditions.The SSP1855 pins F1 and F2 output the average value of active power at a lower frequency and can be used to directly drive electromechanical meters or to interface with microcontrollers (MCUs). Pin CF outputs an instantaneous value of active power at a higher frequency for calibration or interfacing with an MCU.The SSP1855 contains an internal monitoring circuit for the VDD power supply pin. The SSP1855 remains in reset until VDD rises to 4V. When VDD falls below 4V, the SSP1855 is also reset, at which point there are no outputs from F1, F2, or CF.Internal phase matching circuitry allows the voltage and current channels to always be phase matched, regardless of whether the high pass filter (HPF) within channel 1 is on or off. An internal no-load threshold feature ensures that the SSP1855 has no latency at no load.The SSP1855 is available in a 24-pin SSOP package.

SSP1852

The SSP1852 is a high accuracy polyphase electrical energy measurement IC. The part specifications surpass the accuracy requirements as quoted in the IEC62053-2x standard. The only analog circuitry used in the SSP1852 is in the analog-to-digital converters (ADCs) and reference circuit. All other signal processing (such as multi-plication, filtering, and summation) is carried out in the digital domain. This approach provides superior stability and accuracy over extremes in environmental conditions and over time. The SSP1852 supplies average real power information on the low frequency outputs, F1 and F2. These logic outputs may be used to directly drive an electromechanical counter or to interface with an MCU. The CF logic output gives instanta-neous real power information. This output is intended to be used for calibration purposes. The SSP1852 includes a power supply monitoring circuit on the VDD pin. The SSP1852 remains inactive until the supply voltage on VDD reaches 4 V. If the supply falls below 4 V, no pulses are issued on F1, F2, and CF. Internal phase matching circuitry ensures that the voltage and current channels are phase matched. An internal no load threshold ensures the part does not exhibit any creep when there is no load. The SSP1852 is available in a 24-lead SOIC package.

SSP1837

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.