AD598 Analog Devices, AD598 Datasheet - Page 13

• Manufacturer Part Number: AD598
• Description: LVDT Signal Conditioner
• Manufacturer: Analog Devices

REV. A
SCHAEVITZ E 100
LVDT
SCHAEVITZ E 100
LVDT
OUTPUT
MECHANICAL
POSITION
INPUT
MECHANICAL
POSITION
SCHAEVITZ E 100
SCHAEVITZ E 100
A
B
C
D
LVDT 1
0.015 F
0.015 F
LVDT 2
0.1 F
0.1 F
Figure 24. Mechanical Follower Servo-Loop
10
10
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
1
1
EXC 1
EXC 2
LEV 1
LEV 2
FREQ 1
FREQ 2
B1 FILT
B2 FILT
EXC 1
EXC 2
LEV 1
LEV 2
FREQ 1
FREQ 2
B1 FILT
B2 FILT
–V
V
–V
V
B
B
S
S
Figure 25. Differential Gaging
AD598
AD598
0.1 F
0.1 F
FEEDBACK
FEEDBACK
OFFSET 2
OFFSET 2
OFFSET 1
OUT FILT
OFFSET 1
OUT FILT
SIG OUT
SIG OUT
SIG REF
SIG REF
A1 FILT
A2 FILT
A1 FILT
A2 FILT
+V
+V
V
V
A
A
S
S
20
19
18
17
16
15
14
13
12
11
20
19
18
17
16
15
14
13
12
11
–13–
+ V
+ V
0.015 F
0.33 F
0.1 F
0.33 F
0.1 F
0.1 F
– V
V
MASS ON SPRING
OUT
10
1 F
1
2
3
4
5
6
7
8
9
0.1 F
33 GRAMS
4.99k
=
0.01 F
620 N/m
(V
(V
EXC 1
EXC 2
LEV 1
LEV 2
FREQ 1
FREQ 2
B1 FILT
B2 FILT
–V
V
B
A
A
30k
S
–V
+V
B
B
AD598
)+(V
)+(V
FEEDBACK
C
C
OFFSET 2
–V
+V
OFFSET 1
OUT FILT
SIG OUT
SIG REF
A1 FILT
A2 FILT
D
D
)
)
0.068 F
100
• 500 A • R2
10k
49.9k
IN4740A
+V
V
0.1 F
10V
A
S
16
13
12
20
19
18
17
15
14
11
0.33 F
+ V
R2
4.99k
+ V
80.9k
0.33 F
0.1 F
POWER SUPPLY
20k
1000pF
LM675
150k
+ V
47 F
47 F
0.1 F
V
FULL SCALE
OUT
GUARDIAN SOLENOID
12 VDC 2-INT-12D
62 CONE
AD598
33 F
10V
+ 25V
GND