LT119A/LT319A
LM119/LM319
Dual Comparator
FEATURES
s
s
s
s
s
DESCRIPTION
The LT119A is an improved version of the LM119 dual
comparator. It features lower input offset voltage and
offset current, higher voltage gain, guaranteed common
mode rejection, and input protection diodes.
The LT119A is capable of operation over a supply range
from 5V to
卤15V
and can drive 25mA loads from each open
collector output. A separate ground pin allows the LT119A
to isolate system grounds.
Linear Technology Corporation鈥檚 advanced processing,
design techniques and reliability make the LT119A/LT319A
an ideal choice over previous devices in most comparator
applications.
Guaranteed
Maximum 0.5mV Input Offset Voltage
Input Protection Diodes
Operates From Single 5V Supply
25mA Drive Capability
80ns Response Time
APPLICATIONS
s
s
s
s
Window Detectors
High Speed One Shot
Relay/Lamp Drivers
Voltage Controlled Oscillators
TYPICAL APPLICATION
Window Detector*
5V
V
UT
OUTPUT
VOLTAGE (V)
3
Response Time for Various Input Overdrives
6
5
500鈩?/div>
+
鈥?/div>
10
1
4
3
2
1
20mV
1
/
2
LT319A
TTL OUTPUT
V
IN
4
2
V
OUT
= 5.0V FOR
V
LT
鈮?/div>
V
IN
鈮?/div>
V
UT
V
OUT
= 0V FOR
V
IN
鈮?/div>
V
LT
OR V
IN
鈮?/div>
V
UT
8
INPUT
VOLTAGE (mV)
0
100
50
0
0
50
+
1
/
2
LT319A
6
7
V
LT
9
鈥?/div>
5
LT119/319 TA1
*
ALLOWED WINDOW FOR SINGLE
+5V
SUPPLY IS 1.2V TO 3.8V
U
U
U
2mV
5mV
V
S
= 卤15V
R
L
= 500鈩?/div>
V
++
= 5V
T
A
= 25掳C
100 150 200 250 300 350
TIME (ns)
LT119/319 TA2
1
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