STPM32

Active

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

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  • 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 2nd order 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.

    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 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

Recommended for you

Related Applications

Data Center

Telecom Infrastructure

Home, Building and City Automation

Metering

Embedded Software

Evaluation Tools

    • Part Number

      Single-phase energy metering evaluation board with shunt current sensor based on the STPM32

      USB interface tool for STPMxx family of energy meter ICs

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS10272
      ASSP for metering applications with up to four independent 24-bit 2nd order sigma-delta ADCs, 4 MHz OSF and 2 embedded PGLNA
      8.0
      3.99 MB
      PDF
      DS10272

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

    • Description Version Size Action
      AN4470
      The STPM3x and the STCOMET application calibration
      3.0
      757.12 KB
      PDF
      AN4470

      The STPM3x and the STCOMET application calibration

    • Description Version Size Action
      UM1748
      EVALSTPM34, EVALSTPM33, EVALSTPM32 evaluation board
      2.0
      976.45 KB
      PDF
      UM2066
      Getting started with the STPM3x
      2.0
      1.15 MB
      PDF
      UM1719
      The STPM3x evaluation software
      1.2
      1.29 MB
      PDF
      UM1748

      EVALSTPM34, EVALSTPM33, EVALSTPM32 evaluation board

      UM2066

      Getting started with the STPM3x

      UM1719

      The STPM3x evaluation software

    • Description Version Size Action
      DT0039
      Improving measuring accuracy and EFT immunity for STPM3x applications
      1.0
      1.87 MB
      PDF
      DT0039

      Improving measuring accuracy and EFT immunity for STPM3x applications

    • Description Version Size Action
      AN4470
      The STPM3x and the STCOMET application calibration
      3.0
      757.12 KB
      PDF
      AN4470

      The STPM3x and the STCOMET application calibration

Presentations & Training Material

    • Description Version Size Action
      STPM32, STPM33, STPM34 Smart Metering ICs 1.0
      825.14 KB
      PDF

      STPM32, STPM33, STPM34 Smart Metering ICs

Publications and Collaterals

    • Description Version Size Action
      STPM32, STPM33, STPM34 - Taking care of every milliwatt 10.2016
      1.58 MB
      PDF

      STPM32, STPM33, STPM34 - Taking care of every milliwatt

    • Description Version Size Action
      Electric vehicle (EV) ecosystem 1.1
      1.28 MB
      PDF

      Electric vehicle (EV) ecosystem

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STPM32TR
Active
QFN-24L Industrial Ecopack2

STPM32TR

Package:

QFN-24L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

QFN-24L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Sample & Buy

Part Number
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Package
Packing Type
Temperature (°C) Autoshutdown
Marketing Status
ECCN (US)
Country of Origin
Budgetary Price (US$)*/Qty
min
max
STPM32TR Available at 9 distributors

Distributor availability ofSTPM32TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4976 1 Order Now
COMPEL EUROPE 86 1 Order Now
RS COMPONENTS EUROPE 3860 1 Order Now
AVNET AMERICA 4000 0 Order Now
FUTURE WORLDWIDE 4000 4000 Order Now
ARROW EUROPE 28000 0 Order Now
Newark Element14 AMERICA 90 0 Order Now
MOUSER WORLDWIDE 4173 1 Order Now
Farnell Element14 EUROPE 2143 1 Order Now

Distributor reported inventory date: 2020-07-12

Distributor Name

DIGIKEY

Stock

4976

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

86

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

3860

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

4000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

4000

Min.Order

4000

Region

WORLDWIDE Order Now

ARROW

Stock

28000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

90

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

4173

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2143

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-12

Get sample QFN-24L Tape And Reel -40 105 -
Active
EAR99 CHINA 0.84 / 1k

STPM32TR

Package

QFN-24L

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.84 / 1k

Distributor availability ofSTPM32TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4976 1 Order Now
COMPEL EUROPE 86 1 Order Now
RS COMPONENTS EUROPE 3860 1 Order Now
AVNET AMERICA 4000 0 Order Now
FUTURE WORLDWIDE 4000 4000 Order Now
ARROW EUROPE 28000 0 Order Now
Newark Element14 AMERICA 90 0 Order Now
MOUSER WORLDWIDE 4173 1 Order Now
Farnell Element14 EUROPE 2143 1 Order Now

Distributor reported inventory date: 2020-07-12

Distributor Name

DIGIKEY

Stock

4976

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

86

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

3860

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

4000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

4000

Min.Order

4000

Region

WORLDWIDE Order Now

ARROW

Stock

28000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

90

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

4173

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2143

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-12

Operating Temperature (°C)

(min)

-40

(max)

105

Autoshutdown

-

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.84 / 1k

ECCN (US)

EAR99

Country of Origin

CHINA

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors