參數(shù)資料
型號(hào)： LT1002M
廠商： Linear Technology Corporation
英文描述： Dual, Matched Precision Operational Amplifier
中文描述： 雙路，精密運(yùn)算放大器匹配
文件頁(yè)數(shù)： 1/16頁(yè)
文件大?。?/td> 344K
代理商： LT1002M
1
LT1002
Dual, Matched Precision
Operational Amplifier
Strain Gauge Signal Conditioner with Bridge Excitation
–
+
LT1001
3
10
4
11
13
6
2.0K*
8.2k
LM329
+15V
2
3
6
1002 TA01
2k
4.99k*
2k
–15V
*RN60C FILM RESISTORS
+15V
IN4148
350
BRIDGE
2N2219
REFERENCE OUT
TO MONITORING
A/D CONVERTER
IN4148
100
5W
100
5W
10k
ZERO
1
μ
F
340k*
0 TO 10V
OUT
*
301k
1.1k*
2N2907
–
+
1
/
2
LT1002
–
+
1
/
2
LT1002
GAIN
TRIM
INPUT OFFSET VOLTAGE MATCH (
μ
V)
–100
N
70
60
50
40
30
20
10
0
–80
0
40
1002 TA02
–20
80 100
–60 –40
20
60
V
S
=
±
15V
T
A
= 25
°
C
287 UNITS TESTED
Distribution of Offset Voltage Match
FEATURES
I
Guaranteedlow offset voltage
LT1002A
LT1002
I
Guaranteedoffset voltage match
LT1002A
LT1002
I
Guaranteedlow drift
LT1002A
LT1002
I
GuaranteedCMRR
LT1002A
LT1002
I
Guaranteedchannel separation
LT1002A
LT1002
I
Guaranteedmaching characteristics
I
Low noise 0.35
μ
V p-p
APPLICATIO
S
I
Thermocouple Amplifiers
I
Strain Gauge Amplifiers
I
Low level signal processing
I
Medical instrumentation
I
Precision dual limit threshold detection
I
Instrumentation amplifiers
U
60
μ
V max
100
μ
V max
40
μ
V max
80
μ
V max
0.9
μ
V/
°
C max
1.3
μ
V/
°
C max
110dB min
110dB min
132dB min
130dB min
DESCRIPTIO
N
U
The LT
1002 dual, matched precision operational amplifiers
combine excellent individual amplifier performance with tight
matching and temperature tracking between amplifiers.
In the design, processing, and testing of the device, particular
attention has been paid to the optimization of the entire
distribution of several key parameters and their matching.
Consequently, the specifications of even the low cost commer-
cial grade (the LT1002C) have been spectacularly improved
compared to presently available devices.
Essentially, the input offset voltage of all units is less than
80
μ
V, and matching between amplifiers is consistently beter
than 60
μ
V (see distribution plot below). Input bias and offset
currents, channel separation, common mode and power suply
rejections of the LT1002C are all specified at levels which were
previsouly attainable only on very expensive, selected grades
of other dual devices. Power dissipation is nearly halved
compared to the most popular precision duals, without ad-
versely affecting noise or speed performance. A by-product of
lower dissipation is decreased warm-up drift. For even better
performance in a single precision op amp, refer to the LT1001
data sheet. A bridge signal conditioning application is shown
below. This circuit illustrates the requirement for both excel-
lent matching and individual amplifier specifications.
, LTC and LT are registered trademarks of Linear Technology Corporation.
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