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LM319 fiches techniques PDF

Linear Technology - Dual Comparator

Numéro de référence LM319
Description Dual Comparator
Fabricant Linear Technology 
Logo Linear Technology 





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LM319 fiche technique
LT119A/LT319A
LM119/LM319
Dual Comparator
FEATURES
n Guaranteed Maximum 0.5mV Input Offset Voltage
n Input Protection Diodes
n Operates From Single 5V Supply
n 25mA Drive Capability
n 80ns Response Time
APPLICATIONS
n Window Detectors
n High Speed One Shot
n Relay/Lamp Drivers
n Voltage Controlled Oscillators
DESCRIPTION
The LT®119A 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 ±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’s advanced processing,
design techniques and reliability make the LT119A/LT319A
an ideal choice over previous devices in most comparator
applications.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
Window Detector*
5V
VUT 3 + 10
500Ω
1/2 LT319A 1
TTL OUTPUT
VIN 4 2
VOUT = 5V FOR
8+
1/2 LT319A
6
VLT ≤ VIN ≤ VUT
VOUT = 0V FOR
VIN ≤ VLT OR VIN ≤ VUT
VLT 9 7
5
LT119/319 TA1
*ALLOWED WINDOW FOR SINGLE 5V SUPPLY IS 1.2V TO 3.8V
Response Time For Various Input Overdrives
6
5
4
3 20mV
2
1
0
100
50
0
2mV
5mV
VS = ±15V
VRL+
= 500Ω
+ = 5V
TA = 25°C
0 50 100 150 200 250 300 350
TIME (ns)
LT119/319 TA2
119a319afc
1

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