LT1014AMJ Datasheet, PDF (13/26 Pages) Linear Integrated Systems – Single Supply Operation Input Voltage Range Extends to Ground

typical Applications
5V Powered Precision Instrumentation Amplifier
LT1013/LT1014
0.068
TO
INPUT
8
CABLE SHIELDS
9
LT1014
10
20k
–INPUT
1µF
20k
+INPUT
5V
†
†
†
†
5V
200k*
2^–
1
LT1014
3+
RG (TYP 2k)
200k*
6^–
7
LT1014
5+
10k*
10k*
5V
10k _{13 – 4}
LT1014
12 +
10k
11
10k* 10k*
14
OUTPUT
*1% FILM RESISTOR. MATCH 10k's 0.05%
GAIN EQUATION: A =
400,000
RG
+ 1.
†_{FOR HIGH SOURCE IMPEDANCES,}
USE 2N2222 AS DIODES.
1013/14 TA07
9V Battery Powered Strain Gauge Signal Conditioner
15k
9V
2^{– 4}
LT1014
3+
11
100k
9V
15k
9V
3k
9V 47µF
1N4148 22M
1
4.7k
330Ω
2N2219
100k
0.01
TO A/D RATIO
REFERENCE
100k
100k
15
0.068
14
350Ω
STRAIN GAUGE
1
BRIDGE
13
6^–
LT1014
7 ⁴⁹⁹ 13 ^–
5+
LT1014
14
TO A/D
12 +
499
7 ^74C221
0.068
6
9
5
TO A/D
CONVERT COMMAND
9^–
100k
LT1014
8
10 +
SAMPLED OPERATION GIVES LOW AVERAGE OPERATING CURRENT ≈ 650µA.
4.7k-0.01µF RC PROTECTS STRAIN BRIDGE FROM LONG TERM DRIFTS DUE TO
HIGH ∆V/∆T STEPS.
1013/14 TA08
10134fd
13