LT1991 Linear Technology, LT1991 Datasheet - Page 22

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

APPLICATIONS INFORMATION
LT1991
22
V
V
V
V
IN
IN
IN –
IN
–
+
+
V
V
V
V
IN
IN
IN
IN
1.25V
1.25V
–
+
–
+
1.25V
10
10
10
10
8
9
1
2
3
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
M9
M3
M1
P1
P3
P9
V
V
Figure 15. Common Mode Ranges for Various LT1991 Confi gurations on V
V
CM
CM
CM
V
= –2.25V TO 8.95V
V
V
V
V
CM
LT1991
LT1991
LT1991
LT1991
= –1.5V TO 7.2V
= 0.8V TO 2.35V
EE
EE
EE
EE
4
4
4
4
= 0V TO 4V
V
V
V
V
3V
3V
3V
3V
CC
CC
CC
CC
7
7
7
7
REF
REF
REF
REF
5
5
5
5
OUT
OUT
OUT
OUT
1.25V
1.25V
1.25V
1.25V
6
6
6
6
V
V
V
V
OUT
OUT
OUT
OUT
V
V
V
V
IN
IN
IN –
IN
+
–
+
V
V
V
V
IN
IN
IN
IN
–
+
–
+
10
10
10
10
8
9
1
2
3
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
M9
M3
M1
P1
P3
P9
V
CM
V
CM
CM
V
CM
= 12.75V TO 23.95V
LT1991
V
V
LT1991
V
LT1991
V
V
LT1991
= 9.8V TO 18.55V
= 3.8V TO 7.75V
EE
EE
EE
EE
DM
= 2V TO 3.6V
4
4
4
4
V
V
V
V
3V
3V
3V
> 40mV
3V
CC
CC
CC
CC
7
7
7
7
REF
REF
REF
REF
5
5
5
5
OUT
OUT
OUT
OUT
1.25V
1.25V
1.25V
6
6
6
6
V
V
V
V
OUT
OUT
OUT
OUT
V
V
V
V
IN
IN
IN –
IN
S
–
+
+
V
V
V
V
= 3V, 0V; with Gain = 1
IN
IN
IN
IN
–
+
–
+
3V
3V
3V
10
10
10
10
8
9
1
2
3
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
M9
M3
M1
P1
P3
P9
V
CM
V
CM
V
CM
CM
= –17.2V TO –8.45V
www.DataSheet4U.com
= –23.2V TO –12V
V
V
V
V
V
LT1991
LT1991
LT1991
LT1991
= –5V TO –1.25V
EE
EE
EE
DM
EE
= –1V TO 0.6V
4
4
4
4
V
V
V
V
<–40mV
3V
3V
3V
3V
CC
CC
CC
CC
7
7
7
7
REF
REF
REF
REF
3V
5
5
5
5
OUT
OUT
OUT
OUT
1.25V
1.25V
1.25V
6
6
6
6
V
V
V
V
OUT
OUT
OUT
OUT
1991 F15
1991fg