參數(shù)資料
型號: LT1112
廠商: Linear Technology Corporation
英文描述: Dual/Quad Low Power Precision, Picoamp Input Op Amps
中文描述: 雙/四路低功耗精密,Picoamp輸入運算放大器
文件頁數(shù): 1/12頁
文件大小: 369K
代理商: LT1112
1
LT1112/LT1114
D
U
ESCRIPTIO
S
FEATURE
Dual/Quad Low Power
Precision, Picoamp Input Op Amps
The LT1112 dual and LT1114 quad op amps achieve a new
standard in combining low cost and outstanding precision
specifications.
The performance of the selected prime grades matches or
exceeds competitive devices. In the design of the LT1112/
LT1114 however, particular emphasis has been placed on
optimizing performance in the low cost plastic and SO
packages. For example, the 75
μ
V maximum offset voltage
in these low cost packages is the lowest on any dual or
quad non-chopper op amp.
The LT1112/LT1114 also provide a full set of matching
specifications, facilitating their use in such matching
dependent applications as two and three op amp instru-
mentation amplifiers.
Another set of specifications is furnished at
±
1V supplies.
This, combined with the low 320
μ
A supply current per
amplifier, allows the LT1112/LT1114 to be powered by
two nearly discharged AA cells.
I
S8 Package – Standard Pinout
I
Offset Voltage – Prime Grade: 60
μ
V Max
I
Offset Voltage – Low Cost Grade
(Including Surface Mount Dual/Quad): 75
μ
V Max
I
Offset Voltage Drift: 0.5
μ
V/
°
C Max
I
Input Bias Current: 250pA Max
I
0.1Hz to 10Hz Noise: 0.3
μ
V
P-P
, 2.2pA
P-P
I
Supply Current per Amplifier: 400
μ
A Max
I
CMRR: 120dB Min
I
Voltage Gain: 1 Million Min
I
Guaranteed Specs with
±
1.0V Supplies
I
Guaranteed Matching Specifications
I
LT1114 in Narrow Surface Mount Package
U
S
A
O
PPLICATI
I
Picoampere/Microvolt Instrumentation
I
Two and Three Op Amp Instrumentation Amplifers
I
Thermocouple and Bridge Amplifiers
I
Low Frequency Active Filters
I
Photo Current Amplifiers
I
Battery-Powered Systems
Protected by U.S. Patents 4,575,685; 4,775,884 and 4,837,496
Distribution of Input Offset Voltage
(In All Packages)
INPUT OFFSET VOLTAGE (
μ
V)
–70
P
20
25
30
–10
30
15
10
–50
–30
10
50
70
5
0
V
S
= ±15V
T
A
= 25°C
LT1112/14 TA02
1/2 LT1112
+
1/2 LT1112
+
LT1004-1.2
75k
0.1%
46.4k
0.1%
2
3
6
5
4
7
8
1
0.765V
R
X
15k
3V
2.000V
LT1112/14 TA01
TOTAL SUPPLY CURRENT = 700
μ
A
2V REFERENCE: SOURCES 1.7mA, SINKS 5mA
OPTIONAL R
= 300
INCREASES SOURCE
CURRENT TO 5mA
0.765V REFERENCE: SOURCES 5mA,
SINKS 0.5mA
TEMPERATURE COEFFICIENT LIMITED
BY REFERENCE = 20ppm/°C
MINIMUM SUPPLY = 2.7V
Dual Output, Buffered Reference (On Single 3V Supply)
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