LT319A_15 Datasheet, PDF (1/12 Pages) Linear Technology – Dual Comparator

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
V_UT
3 ₊ ¹⁰
500Ω
1/2 LT319A ¹
TTL OUTPUT
V_IN
4_–
2
V_OUT = 5V FOR
8₊
6
1/2 LT319A
V_LT ≤ V_IN ≤ V_UT
V_OUT = 0V FOR
V_IN ≤ V_LT OR V_IN ≤ V_UT
V_LT
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
V_S = ±15V
R_L = 500Ω
V⁺⁺ = 5V
T_A = 25°C
0 50 100 150 200 250 300 350
TIME (ns)
LT119/319 TA2
119a319afc
1