www.st.com/stpm3metering

STPM32, STPM33, STPM34

Taking care of every milliwatt

STPM32, STPM33, STPM34 are high

accuracy AFE (Analog Front End)

for DC and AC energy

measurement, offering high

accuracy down to extremely

low current typical of home

appliances in stand-by.

A full set of on-board features

provides high system integration

and enable on-chip power-

quality monitoring, reducing

smart-meter cost of ownership,

and contributing to a fast and

easy design to dramatically

reduce manufacturing time and

cost.

INTEGRATION

•

Upto4independent24bits∑ΔADC

withPGA

•

IntegratedDSPfor“turn-key”energy

parameterscalculations

•

Built-intwinindependentlytemperature

compensatedvoltagereferences

•

DoubleLEDoutputprogrammable

foractiveandreactiveenergypulses

generation

KEY APPLICATIONS

•

Single,splitandpoly-phaseenergymeters

uptoclass0.2accuracy

•

Smartplugsandappliances

•

Industrialinstruments

•

Servers,lightingandsmartpower

monitoringsystems

Smart metering ICs keep electricity bill consistency with high accuracy

even down to extremely low current levels

KEY FEATURES

HIGH ACCURACY

•

ApplicabletoClass0.2meters

•

<0.1%activepoweraccuracyovera

dynamicrangeof5000:1

•

4kHzBandwidth

•

Singlepointcalibration

FLEXIBILITY

•

ACandDCcomponentsmeasurement

•

Multiplesensorssupport:Shunt,current

transformer,Rogowskycoils

•

Multiplehostinterfaces5and3wiresSPI,

UART

•

I,Vbitstreamavailabletohostcontroller

forcustomerownprocessing

SECURITY AND COMPLIANCY

•

CaseremovalandNeutralAnti-tamper

detection

•

Exceeds50-60HzEN50470-x,IEC

62053-2x,ANSI12.2x