LT1991 Linear Technology, LT1991 Datasheet - Page 14

• Manufacturer Part Number: LT1991
• Description: Precision / 100uA Gain Selectable Amplifier
• Manufacturer: Linear Technology

APPLICATIONS INFORMATION
LT1991
14
V
IN
V
V
IN
IN
10
10
10
8
9
1
2
3
8
9
1
2
3
8
9
1
2
3
M9
M3
M1
P1
P3
P9
M9
M3
M1
P1
P3
P9
M9
M3
M1
P1
P3
P9
V
V
V
LT1991
V
LT1991
V
LT1991
V
EE
EE
EE
S
S
S
GAIN = 1
GAIN = 4
GAIN = 7
4
–
4
–
4
–
V
V
V
V
V
V
CC
CC
CC
V
S
S
S
+
+
+
IN
7
7
7
REF
REF
REF
5
5
5
OUT
OUT
OUT
10
8
9
1
2
3
M9
M3
M1
P1
P3
P9
6
6
6
Figure 5. Some Implementations of Classical Noninverting
Gains Using the LT1991. High Input Z Is Maintained.
V
LT1991
V
EE
GAIN = 13
S
4
V
V
V
–
V
OUT
OUT
OUT
V
CC
S
7
+
REF
V
V
V
5
IN
OUT
IN
IN
6
10
10
10
8
9
1
2
3
8
9
1
2
3
8
9
1
2
3
V
M9
M3
M1
P1
P3
P9
M9
M3
M1
P1
P3
P9
M9
M3
M1
P1
P3
P9
OUT
V
V
V
LT1991
V
LT1991
V
LT1991
V
EE
EE
EE
GAIN = 10
S
S
S
GAIN = 2
GAIN = 5
4
–
4
–
4
–
V
V
V
V
V
V
CC
CC
CC
S
S
S
+
+
7
7
7
+
REF
REF
REF
V
5
5
5
IN
OUT
OUT
OUT
10
6
6
6
8
9
1
2
3
M9
M3
M1
P1
P3
P9
V
V
V
V
LT1991
OUT
OUT
OUT
V
EE
GAIN = 14
S
4
–
V
V
CC
S
V
V
7
+
IN
IN
REF
V
5
IN
OUT
10
10
10
6
8
9
1
2
3
8
9
1
2
3
8
9
1
2
3
M9
M3
M1
P1
P3
P9
M9
M3
M1
P1
P3
P9
M9
M3
M1
P1
P3
P9
V
OUT
V
V
V
www.DataSheet4U.com
LT1991
LT1991
LT1991
GAIN = 3.25
V
V
V
GAIN = 5.5
EE
EE
EE
GAIN = 11
S
S
S
4
4
4
–
–
–
V
V
V
V
V
V
CC
CC
CC
S
S
S
7
+
7
7
+
+
REF
REF
REF
5
5
5
OUT
OUT
OUT
6
6
6
1991 F05
V
V
V
OUT
OUT
OUT
1991fg