AMP01
C3
0.047 F
R
S
10k
15
+IN
+15V
7
GUARD
DRIVE
6
741
3
4
–15V
–IN
3
2
R
G3
200
R
G2
200
R
G1
400
1
18
R
S
14
R
S
6
13
12
R
G
V+
7
9
8
R5
OUTPUT
SENSE
NC
+15V
VOLTAGE GAIN, G =
(
20R R
)
S
G1
*
R4
C1
0.047 F
+ C5
10 F
A
V
= 500 WITH COMPONENTS SHOWN
*
AMP01
2
R
G
V
IOS
NULL
16
V
OOS
NULL
4
17
10
5
V–
11
*
*
SOLDER LINK
R2
1M
R1
1M
*
VR1
100k
REFERENCE
R3
VR2
100k
*
SIGNAL
GROUND
C4
0.047 F
GROUND
+ C6
10 F
C2
0.047 F
–15V
Figure 31. AMP01 Evaluation Circuit Showing Guard-Drive Connection
ANALOG
POWER SUPPLY
+15V
0V
–15V
0V
DIGITAL
POWER SUPPLY
+5V
4.7 F
+
C
C
C
C
DIGITAL
GROUND
C
C
C
7
AMP01
8
9
ANALOG
GROUND
SMP-11
SAMPLE AND HOLD
DIGITAL
GROUND
ADC
DIGITAL
DATA
OUTPUT
OUTPUT
REFERENCE
HOLD
CAPACITOR
C = 0.047 F CERAMIC CAPACITORS
Figure 32. Basic Grounding Practice
REV. D
–13–
AD [ ANALOG DEVICES ]
