Figure 52. Stpms2L And Pt100 Schematic Diagram - STMicroelectronics STM32L476G-EVAL User Manual

Figure 52. STPMS2L and PT100 schematic diagram

STPMS2 power metering
current
shunt
R26
CN4
1K
1
2
3
R27
GND
1K
external generator input: pins 1 and 3
voltage of complex load: pins 2 and 3
shunt voltage : pins 1 and 2
GND
R+jX Load
PT100 measurement using SigmaDelta STPMS2
VDD
R29
3K3
R31
current
100 1%
shunt
R30
PT100
GND
C26
C27
VDD
GND
100nF 1uF
GND
U3
STPMS2L-PUR
GND
6 16
CIP DATn
Exposed
5 pad GND 15
CIN DAT
8 14
VIP CLK
7 13
VIN MS3
GND GND
C24
GND
1uF
C25
C28 1uF VDD
GND
100nF
GND
U4
STPMS2L-PUR
GND
6 16
CIP DATn
Exposed
5 pad GND 15
CIN DAT
8 14
VIP CLK
7 13
VIN MS3
GND GND
C23
GND
1uF
PD3 R23 0
DFSDM_DATIN1
PC2
DFSDM_CKOUT
Operating range: 3.2<VDD<3.6V
PC7 R24 0
PT100_DATIN
Title: STPMS2&PT100
Project:
STM32L476G-EVAL
Size: A3 Reference:
Date: 6/24/2015
MB1144 Revision: B-02
Sheet: 21 of 25