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STPM32TR Datasheet(PDF) 25 Page - STMicroelectronics

Part # STPM32TR
Description  ASSP for metering applications with up to four independent 24-bit 2nd order sigma-delta ADCs, 4 MHz OSF and 2 embedded PGLNA
PDF  121 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STPM32TR Datasheet(HTML) 25 Page - STMicroelectronics

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DS10272 Rev 8
25/121
STPM32, STPM33, STPM34
Typical application example
121
Note:
Above listed components refer to typical metering applications. The STPM3x operation is
not limited to the choice of these external components.
Table 7. Suggested external components in metering applications
Function
Component
Description
Value
Tolerance
Unit
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
2.4
± 5%
Shunt
0.3
± 5%



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