LT1991
ABSOLUTE
(Note 1)
AXI U RATI GS
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
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
PACKAGE/ORDER I FOR ATIO
TOP VIEW
P1
P3
P9
V
EE
REF
1
2
3
4
5
10 M1
9 M3
8 M9
7 V
CC
6 OUT
ORDER PART
NUMBER
TOP VIEW
LT1991CDD
LT1991IDD
LT1991ACDD
LT1991AIDD
DD PART MARKING*
LBMM
DD PACKAGE
10-LEAD (3mm
×
3mm) PLASTIC DFN
EXPOSED PAD CONNECTED TO V
EE
PCB
CONNECTION OPTIONAL
T
JMAX
= 125°C,
θ
JA
= 160°C/W
*Temperature and electrical grades are identified by a label on the shipping container. Consult LTC Marketing for parts specified with wider operating temperature ranges.
The
●
denotes the specifications which apply over the full operating
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.
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
●
●
●
●
●
●
●
●
●
●
●
●
●
ELECTRICAL CHARACTERISTICS
GNL
∆G/∆T
CMRR
Gain Nonlinearity
Gain Drift vs Temperature (Note 6)
Common Mode Rejection Ratio,
Referred to Inputs (RTI)
V
CM
Input Voltage Range (Note 7)
2
U
U
W
W W
U
W
ORDER PART
NUMBER
P1
P3
P9
V
EE
REF
1
2
3
4
5
10
9
8
7
6
M1
M3
M9
V
CC
OUT
MS PACKAGE
10-LEAD PLASTIC MSOP
T
JMAX
= 150°C,
θ
JA
= 230°C/W
LT1991CMS
LT1991IMS
LT1991ACMS
LT1991AIMS
MS PART MARKING*
LTQD
MIN
TYP
MAX
±0.04
±0.08
±0.06
±0.12
UNITS
%
%
%
%
ppm
ppm/°C
dB
dB
dB
dB
1
0.3
80
75
75
60
–28
–0.5
0.75
100
93
90
70
10
3
27.6
5.1
2.35
V
V
V
1991fb
LINEAR [ LINEAR INTEGRATED SYSTEMS ]
