STMicroelectronics STM32L476G-EVAL - Figure 52. STPMS2 L and PT100 Schematic Diagram

UM1855 Schematic diagrams
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Figure 52. STPMS2L and PT100 schematic diagram
21 25
STPMS2&PT100
MB1144 B-02
6/24/2015
Title:
Size: Reference:
Date: Shee t: of
A3
Revision:
STM32L476G-EVAL
Project:
STPMS2 power metering
R26
1K
GND
GND
GND
GND
C26
100nF
GND
GND
R27
1K
GND
R+jX Load
current
shunt
external generator input: pins 1 and 3
voltage of complex load: pins 2 and 3
shunt voltage : pins 1 and 2
R31
100 1%
GND
GND
GND
GND
C25
100nF
GND
GND
VCC
1
VDDAC
2
VDDA
3
VBG
4
DATn
16
DAT
15
CLK
14
MS3
13
MS2
12
MS1
11
MS0
10
VDDAV
9
VIP
8
VIN
7
CIP
6
CIN
5
GND
17
A
V
Exposed
p
ad GND
U4
STPMS2L-PUR
GND
current
shunt
PT100 measurement using SigmaDelta STPMS2
R29
3K3
VDD
VDD
VDD
PC2
PD3
PC7
DFSDM_CKOUT
DFSDM_DATIN1
R23 0
R24 0
PT100_DATIN
VCC
1
VDDAC
2
VDDA
3
VBG
4
DATn
16
DAT
15
CLK
14
MS3
13
MS2
12
MS1
11
MS0
10
VDDAV
9
VIP
8
VIN
7
CIP
6
CIN
5
GND
17
A
V
Exposed
p
ad GND
U3
STPMS2L-PUR
3
2
1
CN4
GND
C294.7uF
C27
1uF
C221uF
C24
1uF
C28 1uF
C211uF
C23
1uF
Operating range: 3.2<VDD<3.6V
R30
PT100