LT119A Ver la hoja de datos (PDF) - Linear Technology

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Fabricante

LT119A

Dual Comparator

Linear Technology 

LT119A/LT319A

LM119/LM319

Dual Comparator

FEATURES

s Guaranteed Maximum 0.5mV Input Offset Voltage

s Input Protection Diodes

s Operates From Single 5V Supply

s 25mA Drive Capability

s 80ns Response Time

U

APPLICATIO S

s Window Detectors

s High Speed One Shot

s Relay/Lamp Drivers

s Voltage Controlled Oscillators

DESCRIPTIO

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.

, LTC and LT are registered trademarks of Linear Technology Corporation.

TYPICAL APPLICATIO

Window Detector*

5V

VUT

3 + 10

500Ω

1/2 LT319A 1

TTL OUTPUT

VIN

4–

2

VOUT = 5V FOR

8+

6

1/2 LT319A

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

RL = 500Ω

V++ = 5V

TA = 25°C

0 50 100 150 200 250 300 350

TIME (ns)

LT119/319 TA2

119a319afb

1

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