DescriptionThe STPM01 is designed for effective measurement of active, reactive and apparent energy in a power line system using Rogowski coil, current transformer and shunt sensors. This device can be implemented as a single chip monophase energy meter or as a peripheral measurement in a microcontroller based monophase or 3-phase energy meter. The STPM01 consists, essentially, of two parts: the analog part and the digital part. The former, is composed by preamplifier and 1st order A/D converter blocks, band gap voltage reference, low drop voltage regulator, the latter, is composed by system control, oscillator, hard wired DSP and SPI interface.There is also an OTP block, which is controlled through the SPI by means of a dedicated command set. The configured bits are used for testing, configuration and calibration purpose. From a pair of output signals coming from analog section, a DSP unit computes the amount of consummated active, reactive and apparent energy, RMS and instantaneous v Features Active, reactive, apparent energies and RMS values Ripple free active energy pulsed outputLive and neutral monitoring for tamper detection Easy and fast digital calibration in only one point over the whole current rangeIntegrated linear VREGs for digital and analog supply Selectable RC or crystal oscillatorSupport 50 60 Hz IEC62052-11, IEC62053-2x specificationLess than 0.1% errorPrecision voltage reference:1.23 V and 30 ppm/C maxDescriptionThe STPM01 is designed for effective measurement of active, reactive and apparent energy in a power line system using Rogowski coil, current transformer and shunt sensors. This device can be implemented as a single chip monophase energy meter or as a peripheral measurement in a microcontroller based monophase or 3-phase energy meter. The STPM01 consists, essentially, of two parts: the analog part and the digital part. The former, is composed by preamplifier and 1st order A/D converter blocks, band gap voltage reference, low drop voltage reg specificationLess than 0.1% errorPrecision vol