STPM34TR

The features of the STPMASSP for metering applications include: - Active power accuracy of < 0.1% error over 5000:1 dynamic range and < 0.5% error over 10000:1 dynamic range . - Exceeds standard requirements for AC watt meters such as EN 50470-x, IEC 62053-2x, and ANSI12.2x . - Reactive power accuracy of < 0.1% error over 2000:1 dynamic range . - Dual mode apparent energy calculation . - Instantaneous and averaged power measurement . - RMS and instantaneous voltage and current measurement . - Under and overvoltage detection (sag and swell) and monitoring . - Overcurrent detection and monitoring . - UART and SPI serial interface with programmable CRC polynomial verification . - Programmable LED and interrupt outputs . - Four independent 24-bit 2nd order sigma-delta ADCs

The STPM device has four independent 24-bit 2nd order sigma-delta ADCs embedded in it.

The active power accuracy of the STPM for metering applications is less than 0.1% error over a 5000:1 dynamic range and less than 0.5% error over a 10000:1 dynamic range.