STPMS2H-PUR Datasheet, PDF (1/33 Pages) STMicroelectronics – Smart sensor II dual-channel 1-bit, 4 MHz, second-order sigma-delta modulator with embedded PGLNA

STPMS2
Smart sensor II dual-channel 1-bit, 4 MHz,
second-order sigma-delta modulator with embedded PGLNA
Features
■ V_CC supply range 3.2 V - 5.5 V
■ Two second-order sigma-delta (ΣΔ)
modulators
■ Programmable chopper-stabilized low noise
and low offset amplifier
■ Supports 50-60 Hz, EN 50470-1, EN 50470-3,
IEC 62053-21, IEC 62053-22 and IEC 62053-
23 standards specs for class 1, class 0.5 and
class 0.2 AC watt meters
■ STPM02H: less than 0.5% error over 1:10000
range
■ STPM02L: less than 0.5% error over 1:5000
range
■ Precision voltage reference: 1.23 V with
programmable TC (STPMS2L only)
■ Internal low drop regulator @ 3 V (typ.)
Applications
■ Power metering
■ Motor control
■ Industrial process control
■ Weight scales
■ Pressure transducers
QFN16 (4 x 4)
or multi-phase energy meters along with the
STPMC1 device, a digital signal processor
designed for energy measurement. This device
can be used in medium and high resolution
measurement applications where single or double
inputs must be monitored at the same time. The
STPMS2 are mixed signal ICs consisting of an
analog and digital section. The analog section
consists of a programmable gain, low noise
choppered amplifier, two second-order ΔΣ
modulator blocks, a band-gap voltage reference,
a low-drop voltage regulator and DC buffers, while
the digital section consists of a clock generator
and output multiplexer.
Description
The STPMS2, also called “smart sensor” devices,
are ASSPs designed for effective measurement in
power line systems utilizing Rogowski coil, current
transformer, Hall or shunt sensors. These devices
are designed as building blocks for single-phase
Table 1. Device summary
Order codes
Package
STPMS2H-PUR
STPMS2L-PUR
QFN16 (4 x 4 mm)
QFN16 (4 x 4 mm)
Packaging
4500 parts per reel
4500 parts per reel
October 2011
Doc ID 16525 Rev 3
1/33
www.st.com
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