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PDF STPMS1 Data sheet ( Hoja de datos )
| Número de pieza | STPMS1 | |
| Descripción | Interface ICs | |
| Fabricantes | ST Microelectronics | |
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STPMS1
Smart sensor dual-channel
first-order sigma-delta modulator with embedded PGA
Data brief
Features
■ VCC supply range: 3.2 V - 5.5 V
■ Two first-order sigma-delta (ΣΔ) modulators
■ Programmable chopper-stabilized low noise
and low offset amplifier
■ Supports 50-60 Hz, IEC 687/1036 spec for
class1 AC watt meters
■ Less than 0.1% error over 1:1000 range
■ Internal low drop regulator at 3 V (typ.)
■ Precision voltage reference: 1.23 V and 30
ppm/°C max.
QFN16 (3 x 3 mm.)
Applications
■ Power metering
■ ADC converters
Description
The STPMS1, also called a “smart sensor”
device, is an ASSP designed for effective
measurement in power line systems utilizing the
www.DataSRhoeegto4Uw.scokmi coil, current transformer or shunt
principle. It is used in combination with the
STPMC1 programmable poly-phase energy
calculator IC, as a building block for single-phase
or multi-phase energy meters.
The STPMS1 is a mixed signal IC consisting of an
analog and a digital section. The analog section
consists of one preamplifier and two first-order ΣΔ
modulator blocks, band-gap 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
Order code
STPMS1BPQR
Package
QFN16 (3 x 3 mm)
Packaging
2500 parts per reel
October 2009
Doc ID 16524 Rev 1
For further information contact your local STMicroelectronics sales office.
1/11
www.st.com
11
1 page  
STPMS1
3 Pin configuration
Figure 2. Pin connections
Pin configuration
VDD 1
GND
VDD
GND
GND
MS1
MS0
VDD
VDD
Table 2. Pin description
Pin Symbol
Description
1
2
3
4
www.DataSheet4U5.com
6
7
8
9
10
11
12
13
14
15
16
Exp PAD
VDD
GND
VDD
GND
CIP
CIN
VIP
VIN
VDD
VDD
MS0
MS1
CLK
DAT
DATn
VCC
GND
Output of internal +3.0 V low drop regulated power supply
Ground level for signals and pin protection
Output of internal +3.0 V low drop regulated power supply
Ground level for signals and pin protection
Current channel +
Current channel -
Voltage channel +
Voltage channel -
Output of internal +3.0 V low drop regulated power supply
Output of internal +3.0 V low drop regulated power supply
Input for configurator 0
Input for configurator 1
Input for external measurement clock
Output of multiplexed ΣΔ signal
Output of multiplexed ΣΔ signal negated
Unregulated supply voltage for padring, band gap, low drop and level shifters
Ground level for signals and pin protection
Doc ID 16524 Rev 1
5/11
5 Page 
STPMS1
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Doc ID 16524 Rev 1
11/11
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| PDF Descargar | [ Datasheet STPMS1.PDF ] | |
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