LT1002 Datasheet, PDF (11/16 Pages) Linear Technology – Dual, Matched Precision Operational Amplifier

APPLICATIONS INFORMATION
Precision ±10V Reference
130k
5%
3.3k
1%
LM129A
4 ₊ 14
13
1_{/2 LT1002}
3_–
12
3.3k
1k
1%
8.2k
1%
10k
0.1%
10k
0.1%
10 _–
7
6
1_{/2 LT1002}
11 ₊
5
–15V
+15V
OUT 1
10.000V
OUT 2
–10.000V
1002 TA08
LT1002
The LT1002 contributes less than 5% of the total drift with The accuracy of the –10V output is limited by the matching
temperature, noise and long term drift of the reference. of the two 10k resistors.
UPPER
LIMIT
INPUT
LOWER
LIMIT
Dual Limit Microvolt Comparator
+15V
430k
14
1%
3_–
1
13
1_{/2 LT1002}
4₊
12
–15V
39.2Ω
1%
15k
1%
1k 5%
FLV117
1_{/4 CA3118}
20k
5%
1_{/4 CA3118}
430k
7
1%
10 _–
8
6
1_{/2 LT1002}
11 ₊
5
–15V
39.2Ω
1%
15k
1%
1_{/4 CA3118}
1_{/4 CA3118}
1002 TA09
When the upper or lower limit is exceeded the LED lights
up. Positive feedback to one of the nulling terminals
creates 5 to 20µV of hysteresis on both amplifiers. This
feedback changes the offset voltage of the LT1002 by less
than 5µV. Therefore, the basic accuracy of the comparator
is limited only by the low offset voltage of the LT1002.
11