Datasheet
LT1991
28
1991fh
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
l
FAX: (408) 434-0507
l
www.linear.com
LINEAR TECHNOLOGY CORPORATION 2006
LT 0512 REV H • PRINTED IN USA
TYPICAL APPLICATION
PART NUMBER DESCRIPTION COMMENTS
LT1990 High Voltage, Gain Selectable Difference Amplifier ±250V Common Mode, Micropower, Pin Selectable Gain = 1, 10
LT1996 Precision Gain Selectable Difference Amplifier Micropower, Pin Selectable Up to Gain = 118
LT1995 High Speed, Gain Selectable Difference Amplifier 30MHz, 1000V/µs, Pin Selectable Gain = –7 to 8
LT6010/LT6011/
LT6012
Single/Dual/Quad 135µA 14nV/√Hz Rail-to-Rail Out
Precision Op Amp
Similar Op Amp Performance as Used in LT1991
Difference Amplifier
LT6013/LT6014 Single/Dual 145µA 8nV/√Hz Rail-to-Rail Out
Precision Op Amp
Lower Noise A
V
≥ 5 Version of LT1991 Type Op Amp
LTC6910-X Programmable Gain Amplifiers 3 Gain Configurations, Rail-to-Rail Input and Output
LT1999 High Voltage Bidirectional Current Sense Amplifier CMRR > 80dB at 100kHz
LT5400 Quad Matched Resistor Network 0.01% Matching, CMRR > 86dB
V
IN
–
V
IN
+
V
IN
V
CC
V
S
= 2.7V TO 36V
V
S
+
V
S
–
M9
M3
M1
P1
P3
P9
LT1991
8
9
10
1
2
3
7
6
5
4
M9
M3
M1
P1
P3
P9
V
OUT
LT1991
8
9
10
1
2
3
7
6
5
4
GAIN = 12
BW = 7Hz TO 32kHz
R2*
10k
R1
10k
V
IN
+ –
V
IN
–
10kΩ
I
LOAD
=
*SHORT R2 FOR LOWEST OUTPUT
OFFSET CURRENT. INCLUDE R2 FOR
HIGHEST OUTPUT IMPEDANCE.
0.1µF
1µF
1991 TA03
Bidirectional Current Source Single Supply AC Coupled Amplifier
V
IN
= 14V to 53V
± 10V
IN
5V
5V
M9
M3
M1
P1
P3
P9
V
OUT
=
LT1991
8
9
10
1
2
3
7
6
5
4
M9
M3
M1
P1
P3
P9
0-4V
OUT
LT1991
REF
REF
8
9
10
1
2
3
7
6
5
–5V
5V
4
1
4
LT1790 –2.5
V
IN
13
1µF
1991 TA04
2
6
Ultra-Stable Precision Attenuator Analog Level Adaptor
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