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STPM32TR Datasheet(PDF) 32 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) 32 Page - STMicroelectronics

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Theory of operation
STPM32, STPM33, STPM34
32/121
DS10272 Rev 8
Figure 22. Power management internal connection scheme and polarization
Temperature compensated reference voltage generators produce VREF1 = VREF2 =
1.18 V at default settings. The primary voltage reference is always on and supplies the
voltage and the primary current channel, the secondary voltage reference is by default in
on-state and supplies the secondary channel.
These reference temperature compensation curves can be selected through three
configuration bits: TCx[2:0] (DSP_CR1 and DSP_CR2).
Table 9. Temperature compensation selection
TCx0
TCx1
TCx2
TC_VREF (ppm/°C)
0
0
0
-30
0
0
1
0
0
1
0
30 (default)
0
1
1
60
1
0
0
90
1
0
1
120
1
1
0
150
1
1
1
180
VCC
VDDA
GNDA
LDR 3.0 V
VOLTAGE
REFERENCE
VRefC1
VRefV1
TC2
VDDD
VOLTAGE
REFERENCE
TC1
LDR 1.2 V
GNDD
GNDREF
VRefC2
VRefV2
4.7 uF
1 μF
1 uF
100 nF
100 nF
3.3 V
GND_REG
VREF1
VREF2
ENVREF1
ENVREF2
GIPG1303141315LM



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