LT1017/LT1018

1

10178ff

TYPICAL APPLICATION

DESCRIPTION

Micropower

Dual Comparator

comparators. The LT1017 is optimized for lowest operat-

ing power while the LT1018 operates at higher power and

higher speed. Both devices can operate from a single 1.1V

cell up to 40V. The output stage includes a class “B” pull-

up current source, eliminating the need for an external

resistive pull-up and saving power. The output stage is

also designed to allow driving loads connected to a supply

more positive than the device, as can comparators with

open-collector output stages.

Input specifications are also excellent. On-chip trimming

minimizes offset voltage, while high gain and common

mode rejection ratio keep other input referred errors low.

Common mode voltage range includes ground. Special

circuitry prevents false output states even if the input is

overdriven.

The LT1017/LT1018 are pin compatible with older dual

comparators such as 393 type devices.

1.5V Powered Refrigerator Alarm

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

All other trademarks are the property of their respective owners.

FEATURES

APPLICATIONS

110μA Supply Current (LT1018)

16-Lead Plastic SO Packages

Supply Current

3

665k

1%

52.3k

1%

OUTPUT HIGH FOR

0°C ≤ T ≤ 5°C

280k

1%

YSI 44011

258.3k AT 5°C

333.1k AT 0°C

665k

1%

1.5V

1

8

2

–

+

1/2 LT1017

5

7

4

1017/18 TA01

6

–

+

1/2 LT1017

TOTAL SUPPLY VOLTAGE (V)

12

4

0

40

80

160

10

20

40

100

1017/18 TA02

120

20

60

140

100

LT1018

OUTPUTS

LOW

LT1017

OUTPUTS

LOW

LT1018

OUTPUTS

HIGH

LT1017

OUTPUTS

HIGH