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STPM12ATR Datasheet(PDF) 1 Page - STMicroelectronics |
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STPM12ATR Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 46 page  June 2011 Doc ID 13167 Rev 8 1/46 46 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 sensors ■ Live and neutral monitoring (STPM13/14) ■ Easy and fast digital calibration at only one load point ■ No-load, negative power and tamper indicators ■ Integrated linear VREGs ■ RC (STPM11/13) or crystal oscillator (STPM12/14) ■ Support 50 ÷ 60 Hz - IEC62052-11, IEC62053- 2X specification ■ Less than 0.1% error Description The STPM1x family is designed for effective measurement of active energy in a power line system using a Rogowski Coil, current transformer and shunt sensors. This device is specifically designed to provide all the necessary features to implement a single phase energy meter without any other active component. The STPM1x device family consists, essentially, of two parts: the analog part and the digital part. The former, is composed of a preamplifier and first order ∑ Δ A/D converter blocks, band gap voltage reference, low drop voltage regulator. The digital part is composed of a system control, oscillator, hard wired DSP and interface for calibration and 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 stepper counter. In the STPM1x an output signal with pulse frequency proportional to energy is generated. This signal is used in the calibration phase of the energy meter application allowing a very easy approach. When the device is fully configured and calibrated, a dedicated bit of OTP block can be written permanently in order to prevent accidental entry into test mode or changing any configuration bit. TSSOP20 Table 1. Device summary Order codes Package Packaging STPM11ATR TSSOP20 (tape and reel) 2500 parts per reel STPM12ATR TSSOP20 (tape and reel) 2500 parts per reel STPM13ATR TSSOP20 (tape and reel) 2500 parts per reel STPM14ATR TSSOP20 (tape and reel) 2500 parts per reel www.st.com Obsolete Product(s) - Obsolete Product(s) |
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