STPM34

STPM32, STPM33, STPM34 Datasheet ASSP for metering applications with up to four independent 24-bit 2nd order sigma-delta ADCs, 4 MHz OSF and 2 embedded PGLNA Product status link STPM32 STPM33 STPM34 Product label Features Active power accuracy: – < 0.1% error over 5000 : 1 dynamic range – < 0.5% error over 10000 : 1 dynamic range Exceeds 50-60 Hz EN 50470-x, IEC 62053-2x, ANSI12.2x standard requirements for AC watt meters Reactive power accuracy: – < 0.1% error over 2000 : 1 dynamic range Dual mode apparent energy calculation Instantaneous and averaged power RMS and instantaneous voltage and current 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 Two programmable gain chopper stabilized low-noise and low-offset amplifiers Bandwidth 3.6 kHz at -3 dB Vcc supply range 3.3 V ± 10% Supply current Icc 4.3 mA (STPM32) Input clock frequency 16 MHz, Xtal or external source Twin precision voltage reference: 1.18 V with independent programmable TC, 30 ppm/°C typ. Internal low drop regulator at 3 V (typ.) QFN packages Operating temperature from -40 °C to +105 °C Description The STPM3x is an ASSP family designed for high accuracy measurement of power and energies in power line systems using the Rogowski coil...