
LT1991
2
1991fb
SYMBOL
G
PARAMETER
Gain Error
CONDITIONS
V
S
=
±
15V, V
OUT
=
±
10V; R
L
= 10k
G = 1; LT1991A
G = 1; LT1991
G = 3 or 9; LT1991A
G = 3 or 9; LT1991
V
S
=
±
15V; V
OUT
=
±
10V; R
L
= 10k
V
S
=
±
15V; V
OUT
=
±
10V; R
L
= 10k
V
S
=
±
15V; V
CM
=
±
15.2V
G = 9; LT1991A
G = 3; LT1991A
G = 1; LT1991A
Any Gain; LT1991
P1/M1 Inputs
V
S
=
±
15V; V
REF
= 0V
V
S
= 5V, 0V; V
REF
= 2.5V
V
S
= 3V, 0V; V
REF
= 1.25V
MIN
TYP
MAX
UNITS
●
●
●
●
±
0.04
±
0.08
±
0.06
±
0.12
10
3
%
%
%
%
GNL
G/
T
CMRR
Gain Nonlinearity
Gain Drift vs Temperature (Note 6)
Common Mode Rejection Ratio,
Referred to Inputs (RTI)
●
1
ppm
●
0.3
ppm/
°
C
●
●
●
●
80
75
75
60
100
93
90
70
dB
dB
dB
dB
V
CM
Input Voltage Range (Note 7)
●
●
●
–28
–0.5
0.75
27.6
5.1
2.35
V
V
V
ABSOLUTEW
(Note 1)
Total Supply Voltage (V
+
to V
–
)............................... 40V
Input Voltage (Pins P1/M1, Note 2).......................
±
60V
Input Voltage
(Other inputs Note 2)..............V
+
+ 0.2V to V
–
– 0.2V
Output Short-Circuit Duration (Note 3)............Indefinite
Operating Temperature Range (Note 4)...–40
°
C to 85
°
C
Specified Temperature Range (Note 5)....–40
°
C to 85
°
C
W
W
U
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
A
= 25
°
C. Difference amplifier configuration, V
S
= 5V, 0V or
±
15V;
V
CM
= V
REF
= half supply, unless otherwise noted.
The
●
denotes the specifications which apply over the full operating
ORDER PART
NUMBER
DD PART MARKING*
T
JMAX
= 150
°
C,
θ
JA
= 230
°
C/W
LBMM
LT1991CDD
LT1991IDD
LT1991ACDD
LT1991AIDD
*Temperature and electrical grades are identified by a label on the shipping container. Consult LTC Marketing for parts specified with wider operating temperature ranges.
Maximum Junction Temperature
DD Package......................................................125
°
C
MS Package .....................................................150
°
C
Storage Temperature Range
DD Package.......................................–65
°
C to 125
°
C
MS Package ......................................–65
°
C to 150
°
C
Lead Temperature (Soldering, 10 sec)..................300
°
C
ORDER PART
NUMBER
MS PART MARKING*
LTQD
LT1991CMS
LT1991IMS
LT1991ACMS
LT1991AIMS
EXPOSED PAD CONNECTED TO V
EE
PCB
CONNECTION OPTIONAL
T
JMAX
= 125
°
C,
θ
JA
= 160
°
C/W
PACKAGE/ORDER U
U
W
TOP VIEW
DD PACKAGE
10-LEAD (3mm
×
3mm) PLASTIC DFN
10
9
8
6
7
4
5
3
2
1
M1
M3
M9
V
CC
OUT
P1
P3
P9
V
EE
REF
1
2
3
4
5
P1
P3
P9
V
EE
REF
10
9
8
7
6
M1
M3
M9
V
CC
OUT
TOP VIEW
MS PACKAGE
10-LEAD PLASTIC MSOP