LT1013_1 Datasheet, PDF (12/24 Pages) Linear Technology – Quad Precision Op Amp (LT1014) Dual Precision Op Amp (LT1013)

LT1013/LT1014
TYPICAL APPLICATIO S
5V Powered Precision Instrumentation Amplifier
0.068
12
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
1N4148 22M
1
4.7k
330Ω
47μF
2N2219
100k
0.01
TO A/D RATIO
REFERENCE
100k
100k
15
0.068
14
350Ω
STRAIN GAUGE
1
BRIDGE
13
6^–
7 ⁴⁹⁹ 13 ^–
LT1014
5+
LT1014
14
TO A/D
12 +
499
7 ^74C221
0.068
6
9
5
TO A/D
CONVERT COMMAND
9^–
100k
8
LT1014
10 +
SAMPLED OPERATION GIVES LOW AVERAGE OPERATING CURRENT ≈ 650μA.
4.7k–0.01μF RC PROTECTS STRAIN BRIDGE FROM LONG TERM DRIFTS DUE TO
HIGH ΔV/ΔT STEPS.
1013/14 TA08
10134fc