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STPM01
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STMicroelectronics
STPM01 데이터시트 - STMicroelectronics
STMicroelectronics
Description
The 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 Δ ∑ 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.
Features
◾ Active, reactive, apparent energies and RMS
values
◾ Ripple free active energy pulsed output
◾ Live and neutral monitoring for tamper
detection
◾ Easy and fast digital calibration in only one
point over the whole current range
◾ OTP for calibration and configuration
◾ Integrated linear VREGs for digital and analog
supply
◾ Selectable RC or crystal oscillator
◾ Support 50 ÷ 60 Hz – IEC62052-11, IEC62053-
2x specification
◾ Less than 0.1 % error
◾ Precision voltage reference: 1.23 V and 30
ppm/°C max
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