STPM34

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

All tools & software

    • Part number
      Status
      Description
      Type
      Supplier

      STSW-STPM001

      Active

      STPM32/33/34 evaluation software

      Evaluation Tool Software ST

      STSW-STPM002

      Active

      STM32 firmware for STPM32 access and a basic metrology application

      Evaluation Tool Software ST

      STSW-STPM3PHFW

      Active

      Firmware for EVALSTPM3x-3PH evaluation board

      Evaluation Tool Software ST

      STSW-STPM3PHGUI

      Active

      Evaluation software for EVALSTPM3x-3PH

      Evaluation Tool Software ST
      STSW-STPM001

      Description:

      STPM32/33/34 evaluation software
      STSW-STPM002

      Description:

      STM32 firmware for STPM32 access and a basic metrology application
      STSW-STPM3PHFW

      Description:

      Firmware for EVALSTPM3x-3PH evaluation board
      STSW-STPM3PHGUI

      Description:

      Evaluation software for EVALSTPM3x-3PH
    • Part number
      Status
      Description
      Type
      Supplier

      EVALSTPM34

      Active

      Dual-phase energy metering evaluation board with 2 current transformers based on the STPM34

      Energy and Smartgrid Solution Eval Boards --

      EVALSTPM3X-3PH

      Active

      Poly-phase energy metering demonstration board with current transformers based on the STPM33, STPM34 and STM8S903

      Energy and Smartgrid Solution Eval Boards --

      STEVAL-IPE023V1

      Active

      USB interface tool for STPMxx family of energy meter ICs

      Energy and Smartgrid Solution Eval Boards --
      EVALSTPM34

      Description:

      Dual-phase energy metering evaluation board with 2 current transformers based on the STPM34
      EVALSTPM3X-3PH

      Description:

      Poly-phase energy metering demonstration board with current transformers based on the STPM33, STPM34 and STM8S903
      STEVAL-IPE023V1

      Description:

      USB interface tool for STPMxx family of energy meter ICs

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STMicroelectronics - STPM34

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STPM34TR
Active
VFQFPN 32 5x5x1.0 Industrial Ecopack2

STPM34TR

Package:

VFQFPN 32 5x5x1.0

Material Declaration**:

PDF XML

Marketing Status

Active

Package

VFQFPN 32 5x5x1.0

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

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ECCN (US)
ECCN (EU)
Packing Type
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Temperature (°C) Autoshutdown
Budgetary Price (US$)*/Qty
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min
max
STPM34TR Available at 3 distributors

Distributor availability ofSTPM34TR

Distributor Name
Region Stock Min. Order Third party link
COMPEL EUROPE 14 1 Order Now
ARROW EUROPE 15000 0 Order Now
Newark Element14 AMERICA 481 0 Order Now

Distributor reported inventory date: 2020-11-26

Distributor Name

COMPEL

Stock

14

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

15000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

481

Min.Order

0

Region

AMERICA Order Now

Distributor reported inventory date: 2020-11-26

Active
EAR99 NEC Tape And Reel VFQFPN 32 5x5x1.0 -40 105 - 0.94 / 1k
MORE INFO

Unit Price (US$):

0.94

Country of Origin:

CHINA

STPM34TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.94 / 1k

Distributor availability ofSTPM34TR

Distributor Name
Region Stock Min. Order Third party link
COMPEL EUROPE 14 1 Order Now
ARROW EUROPE 15000 0 Order Now
Newark Element14 AMERICA 481 0 Order Now

Distributor reported inventory date: 2020-11-26

Distributor Name

COMPEL

Stock

14

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

15000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

481

Min.Order

0

Region

AMERICA Order Now

Distributor reported inventory date: 2020-11-26

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

VFQFPN 32 5x5x1.0

Operating Temperature (°C)

(min)

-40

(max)

105

Autoshutdown

-

Budgetary Price (US$)* / Qty

0.94 / 1k

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