Datasheet

LM111, LM211, LM311
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007H − SEPTEMBER 1973 − REVISED AUGUST 2003
15
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
15 μF
+
10 kΩ
1 MΩ
V
CC+
= 15 V
TL081
Output
Input
V
CC−
= −15 V
2 kΩ
+
−
Figure 25. Negative-Peak Detector
†
R1 sets the comparison level. At comparison, the photodiode has less than 5 mV across it, decreasing dark current by an order of magnitude.
2N2222
2N3708
R1
†
30 kΩ
3.9 kΩ
1 kΩ
Output
to TTL
V
CC+
= 5 V
1N2175
Figure 26. Precision Photodiode Comparator
‡
Transient voltage and inductive kickback protection
2N3708
V
CC+
Inputs
TTL
Strobe
V
CC−
‡
1 kΩ
BAL/STRB
Figure 27. Relay Driver With Strobe