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See Technical Specifications

STPM32TR

ASSP for metering applications with up to four independent 24-bit 2nd order sigma-delta ADCs, 4 MHz OSF and 2 embedded PGLNA

Manufacturer:

STMicroelectronics, Inc
Mfr.Part #:

STPM32TR
Datasheet:

STPM32TR Datasheet (PDF)
Current - Supply:

3.9mA
Voltage - Supply:

2.95 V ~ 3.65 V
Meter Type:

2 x Single Phase
Operating Temperature:

-40°C ~ 85°C
EDA/CAD Models:

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STPM32TR General Description

The STPM3x is an ASSP family designed for high accuracy measurement of power and energies in power line systems using the Rogowski coil, current transformer or shunt current sensors. The STPM3x provides instantaneous voltage and current waveforms and calculates RMS values of voltage and currents, active, reactive and apparent power and energies. The STPM3x is a mixed signal IC family consisting of an analog and a digital section. The analog section consists of up to two programmable gain low-noise low-offset amplifiers and up to four 2ndorder 24-bit sigma-delta ADCs, two bandgap voltage references with independent temperature compensation, a low drop voltage regulator and DC buffers. The digital section consists of digital filtering stage, a hardwired DSP, DFE to the input and a serial communication interface (UART or SPI). The STPM3x is fully configurable and allows a fast digital system calibration in a single point over the entire current dynamic range.USB interface tool for STPMxx family of energy m.Single-phase energy metering evaluation board wi.

Key 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 2^nd
order sigma-delta ADCs
Two programmable gain chopper stabilized low-noise and low-offset amplifiers
Bandwidth 3.6 kHz at -3 dB
V_cc supply range 3.3 V ± 10%
Supply current I_cc 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

Specifications

Category	Integrated Circuits (ICs)Power Management (PMIC)Energy Metering	Series	-
Input Impedance	-	Measurement Error	-
Voltage - I/O High	-	Voltage - I/O Low	-
Current - Supply	3.9mA	Voltage - Supply	2.95 V ~ 3.65 V
Meter Type	2 x Single Phase	Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount	Base Product Number	STPM32