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