LT1112/LT1114
Dual/Quad Low Power
Precision, Picoamp Input Op Amps
FEATURES
DESCRIPTIO
The LT 1112 dual and LT1114 quad op amps achieve a
Offset Voltage Prime Grade: 60V Max
Offset Voltage Low Cost Grade new standard in combining low cost and outstanding
precision specifications.
(Including Surface Mount Dual/Quad): 75V Max
Offset Voltage Drift: 0.5V/C Max
The performance of the selected prime grades matches or
Input Bias Current: 250pA Max
exceeds competitive devices. In the design of the LT1112/
0.1Hz to 10Hz Noise: 0.3V , 2.2pA
P-P P-P
LT1114 however, particular emphasis has been placed on
Supply Current per Amplifier: 400A Max
optimizing performance in the low cost plastic and SO
CMRR: 120dB Min
packages. For example, the 75V maximum offset voltage
Voltage Gain: 1 Million Min
in these low cost packages is the lowest on any dual or
Guaranteed Specs with 1.0V Supplies
quad non-chopper op amp.
Guaranteed Matching Specifications
The LT1112/LT1114 also provide a full set of matching
SO-8 Package Standard Pinout
specifications, facilitating their use in such matching
LT1114 in Narrow Surface Mount Package
dependent applications as two and three op amp instru-
U
mentation amplifiers.
APPLICATIO S
Another set of specifications is furnished at 1V supplies.
Picoampere/Microvolt Instrumentation
This, combined with the low 320A supply current per
Two and Three Op Amp Instrumentation Amplifers
amplifier, allows the LT1112/LT1114 to be powered by
Thermocouple and Bridge Amplifiers
two nearly discharged AA cells.
Low Frequency Active Filters
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
Photo Current Amplifiers
Protected by U.S. Patents 4,575,685; 4,775,884 and 4,837,496
Battery-Powered Systems
TYPICAL APPLICATIO
Distribution of Input Offset Voltage
Dual Output, Buffered Reference (On Single 3V Supply) (In All Packages)
30
3V TOTAL SUPPLY CURRENT = 700A
V = 15V
S
2V REFERENCE: SOURCES 1.7mA, SINKS 5mA
T = 25C
A
R
15k X OPTIONAL R = 300 INCREASES SOURCE
X
25
CURRENT TO 5mA
0.765V REFERENCE: SOURCES 5mA,
20
SINKS 0.5mA
2
8
TEMPERATURE COEFFICIENT LIMITED
1 BY REFERENCE = 20ppm/C
15
1/2 LT1112 2.000V
MINIMUM SUPPLY = 2.7V
3 +
75k
10
LT1004-1.2
0.1%
5
6
0
7
1/2 LT1112 0.765V 10 50 70
70 50 30 10 30
5 +
INPUT OFFSET VOLTAGE (V)
4
LT1112/14 TA02
46.4k
0.1%
LT1112/14 TA01
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PERCENT OF UNITS
U
ULT1112/LT1114
(Note 1)
ABSOLUTE AXI U RATI GS
Specified Temperature Range (Note 12)
Supply Voltage ..................................................... 20V
LT1112AM/LT1112M
Differential Input Current (Note 2) ..................... 10mA
LT1114AM/LT1114M (OBSOLETE)... 55C to 125C
Input Voltage (Equal to Supply Voltage) ............... 20V
LT1112AC/LT1112C/LT1112S8
Output Short-Circuit Duration ......................... Indefinite
LT1114AC/LT1114C/LT1114S .......... 40C to 85C
Storage Temperature Range ................ 65C to 150C
LT1112I/LT1114I .............................. 40C to 85C
Lead Temperature (Soldering, 10 sec)................ 300C
LT1112MPS8 ................................... 55C to 125C
Operating Temperature Range (Note 11)
LT1112AM/LT1112M
LT1114AM/LT1114M (OBSOLETE)... 55C to 125C
LT1112AC/LT1112C/LT1112S8
LT1114AC/LT1114C/LT1114S .......... 40C to 85C
LT1112I/LT1114I .............................. 40C to 85C
LT1112MPS8 ................................... 55C to 125C
UUW
PACKAGE/ORDER I FOR ATIO
TOP VIEW
ORDER PART
ORDER PART
+
OUT A 1 8 V
NUMBER NUMBER
TOP VIEW
IN A 2 7 OUT B
A
+
LT1112S8
1 8
LT1112ACN8 OUT A V
+IN A 3 6 IN B
B
LT1112IS8
LT1112CN8 IN A 2 7 OUT B
V 4 5 +IN B
A
LT1112MPS8
LT1112IN8 +IN A 3 6 IN B
N8 PACKAGE
B
8-LEAD PDIP V 4 5 +IN B
S8 PART MARKING
T = 150C, = 130C/W
JMAX JA
S8 PACKAGE
8-LEAD PLASTIC SO
J8 PACKAGE 8-LEAD CERDIP 1112
LT1112AMJ8
T = 160C, = 100C/W
JMAX JA T = 150C, = 190C/W
JMAX JA
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LT1112MJ8
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OBSOLETE PACKAGE
Consider the N8 Package for Alternate Source
TOP VIEW
ORDER PART
ORDER PART
TOP VIEW
NUMBER
OUT A 1 14 OUT D
NUMBER
IN A 2 13 IN D OUT A 1 16
OUT D
A
D LT1114S
LT1114ACN
+IN A 3 12 +IN D IN A 2 15
IN D
A D
LT1114IS
+
LT1114CN
V 4 11 V +IN A 3 14
+IN D
+
LT1114IN
+IN B 5 10 +IN C V 4 13
V
B C
IN B 6 9 IN C +IN B 5 12
+IN C
B
C
OUT B 7 8 OUT C IN B 6 11
IN C
OUT B 7 10
OUT C
N PACKAGE
14-LEAD PDIP
NC 8 9
NC
T = 150C, = 110C/W
JMAX JA
S PACKAGE
J PACKAGE 14-LEAD CERDIP
16-LEAD PLASTIC SO (NARROW)
LT1114AMJ
T = 160C, = 80C/W (J)
JMAX JA
T = 150C, = 150C/W
JMAX JA
LT1114MJ
OBSOLETE PACKAGE
Consider the N Package for Alternate Source
Consult LTC Marketing for parts specified with wider operating temperature ranges.
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