STPM13

STPM11, STPM12 STPM13, STPM14 Single phase energy metering IC with pulsed output and digital calibration Features ■ Ripple free active energy pulsed output ■ Direct stepper counter drivers ) ■ Shunt, current transformer, Rogowsky coil t(s sensors c ■ Live and neutral monitoring (STPM13/14) du ■ Easy and fast digital calibration at only one ro load point P ■ No-load, negative power and tamper indicators te ■ Integrated linear VREGs le ■ RC (STPM11/13) or crystal oscillator o (STPM12/14) bs ■ Support 50 ÷ 60 Hz - IEC62052-11, IEC62053O 2X specification - ■ Less than 0.1% error t(s) Description uc The STPM1x family is designed for effective rod measurement of active energy in a power line system using a Rogowski Coil, current P transformer and shunt sensors. This device is te specifically designed to provide all the necessary le features to implement a single phase energy o meter without any other active component. The s STPM1x device family consists, essentially, of two bparts: the analog part and the digital part. The Oformer, is composed of a preamplifier and first TSSOP20 configuration. The calibration and configuration are done by OTP cells, that can be programmed through a serial interface. The configured bits are used for testing, configuration and calibration purposes. From two ∑ Δ output signals coming from the analog section, a DSP unit computes the amount of consumed active energy. The active energy is available as a pulse frequency output and directly driven by a...