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STPMS2 数据表(PDF) 14 Page - STMicroelectronics

部件名 STPMS2
功能描述  Programmable chopper-stabilized low noise and low offset amplifier
PDF  36 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STPMS2 数据表(HTML) 14 Page - STMicroelectronics

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Applications
STPMS2
14/36
DocID16525 Rev 5
Table 6: Recommended external components in metering applications
Function
Component
Description
Value
Tolerance
Unit
Calculator
STPMC1
Line voltage
interface
Resistor divider
R-to-R ratio VRMS = 230 V
1:1650
±1%
50
ppm/°C
V/V
R-to-R ratio VRMS = 110 V
1:830
Line current
interface
Rogowski coil
Current-to-voltage ratio kS
0.15
±5%
50
ppm/°C
mV/A
CT
1.7
Shunt
0.43
Above listed components refer to a typical metering application. The STPMS2
operation is not limited to the choice of these external components.
Figure 5: Simplified application schematics for the STPMC1 energy metering-based



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