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.

Applications

• single-phase multifunctional electricity meter
• smart socket
• smart home appliances
• electric bicycle charging pile

Key features

• 3 high-precision sigma-delta ADC, used to measure two channel of currents and one channel of voltage
• 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.
• Two current channel support electric leakage/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, Waveform data can be output for load type analysis
• Built-in temperature sensor, Meet the requirements of the product itself, such as over-temperature monitoring, high current node preset temperature alarm, room temperature measurement
• SPI(≤900KHz) /UART(4800bps), UART supports multi-chip address communication（SSOP20L）
• 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)
• Package：SSOP20L/SOP16L