STPMS2 Datasheet, PDF (1/36 Pages) STMicroelectronics – Programmable chopper-stabilized low noise and low offset amplifier

STPMS2
Smart sensor II dual-channel 1-bit, 4 MHz, second-order sigma-
delta modulator with embedded PGLNA
Datasheet - production data
Features
 VCC supply range 3.2 V to 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 standard specs for class 1, class
0.5 and class 0.2 AC watt meters
 STPMS2L-PUR: less than 0.5% error over
1:5000 range
 Precision voltage reference: 1.23 V with
programmable TC
 Internal low drop regulator @ 3 V (typ.)
Applications
 Power metering
 Motor control
 Industrial process control
 Weight scales
 Pressure transducers
Description
The STPMS2 also called “smart sensor” device,
is an ASSP designed for effective measurement
in power line systems utilizing the Rogowski coil,
current transformer and Hall or shunt sensors.
This device is designed as a building block for
single-phase 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 is a mixed signal IC
consisting of an analog and digital section. The
analog section consists of a programmable gain,
low noise chopper amplifier, two second-order ΔΣ
modulator blocks, a bandgap voltage reference, a
low drop voltage regulator and DC buffers, while
the digital section consists of a clock generator
and output multiplexer.
Table 1: Device summary
Oder code
Package
Packing
STPMS2L-PUR
QFN16 (4x4 mm)
4500
pieces per
reel
March 2016
DocID16525 Rev 5
This is information on a product in full production.
1/36
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