A
B
C
D
E
F
G
H
I
J
1
VIN
1-E6
+5V
J6
1
U7
L14806E101R-10
C44
47μF
0.1μF
2
C39
C34
N
P
47μF
0.1μF
C43
N
P
P
N
J5
C32
C31
N
P
47μF
0.1μF
1
3
2
3
SW7
MIC520I-5.0YS
L1
+5VA
2
C40
1
0.1μF
C35
N
P
47μF
C41
0.1μF
D7
3
R8
91 !
1
2
C46
0.1μF
D8
4
0.1μF
C30
511 !
R24
2
29
21
4
32
0.1μF
C38
0.1μF
7
24
C37
5
传感器
飞思卡尔半导体公司
1
2
MIC520I-3.3YS
1
U10
LM4040A41IDBZR
3
+3.3V
R25
470 !
+ VAREF
2
3
LM4040A41IDBZR
4
图4中。
MPXM2102A
INA118UB
+ VAREF
0.1μF
C33
0.1μF
C42
C45
+5V
+5VA
0.1μF
1
2
Rg
3
VIN-
4
VIN +
V-
U4
R23
0!
0.1μF
C36
U2
VCC
V+
8
Rg2
7
V+
6
Vo
5
VRF
1
GND
2
+ VOUT
3
Vs
4
-VOUT
+5VA
J3
U5
5
5
ADC_CONTROL
1-C5
LTC2442
CH0
6
J4
30
31
6
CH1 7
CH2 8
CH 3 9
28
10
11
12
13
18
17
REF +
REF-
CH0
CH1
CH2
CH3
COM
ADCINB
ADCINA
OUTA
-INA
-INB
OUTB
/ CS
SCK
SDO
SDI
忙
FO
INT- / EXT
MUXOUTB
MUXOUTA
INA +
+ INB
GND GND GND V -
/ CS
35
SCK
1
SDO
36
SDI
33
2 BUSY
34
3
26
27
25
19
6
CH
1-B6
7
8
B
C
D
E
F
G
H
I
J
8
A
AN3956
4
