STPM34

Active
Design Win

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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Product overview

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 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.
  • All 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

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All tools & software

    • Part number
      Status
      Description
      Type
      Supplier

      STSW-STPM001

      Active

      STPM32/33/34 evaluation software

      Evaluation Tool Software ST
      STSW-STPM001

      Description:

      STPM32/33/34 evaluation software

      STSW-STPM002

      Active

      STM32 firmware for STPM32 access and a basic metrology application

      Evaluation Tool Software ST
      STSW-STPM002

      Description:

      STM32 firmware for STPM32 access and a basic metrology application
    • 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 ST
      EVALSTPM34

      Description:

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

      STEVAL-IPE023V1

      Active

      USB interface tool for STPMxx family of energy meter ICs

      Energy and Smartgrid Solution Eval Boards --
      STEVAL-IPE023V1

      Description:

      USB interface tool for STPMxx family of energy meter ICs

EDA Symbols, Footprints and 3D Models

STMicroelectronics - STPM34

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3D models

Quality and Reliability

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

STPM34TR

Package:

VFQFPN 32 5x5x1.0 mm

Material Declaration**:

Marketing Status

Active

Package

VFQFPN 32 5x5x1.0 mm

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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Part Number
Order from distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Autoshutdown
Budgetary Price (US$)*/Qty
Unit Price (US$)
Country of Origin
min
max
STPM34TR Available at 2 distributors

Distributor availability ofSTPM34TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 8514 1 Buy from Distributor
Farnell Element14 EUROPE 2384 1 Buy from Distributor

Distributor reported inventory date: 2022-08-15

Distributor Name

DIGIKEY

Stock

8514

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

2384

Min.Order

1

Distributor reported inventory date: 2022-08-15

Active
EAR99 NEC Tape and Reel VFQFPN 32 5x5x1.0 mm -40 105 -

1.2511

CHINA

STPM34TR Active

Package:
VFQFPN 32 5x5x1.0 mm
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

STPM34TR

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

105

Autoshutdown:

-

Country of Origin:

CHINA

Distributor availability ofSTPM34TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 8514 1 Buy from Distributor
Farnell Element14 EUROPE 2384 1 Buy from Distributor

Distributor reported inventory date: 2022-08-15

Distributor Name

DIGIKEY

Stock

8514

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

2384

Min.Order

1

Distributor reported inventory date: 2022-08-15

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