1

LTC1040

1040fa

s

Micropower

1.5

µW (1 Sample/Second)

s

Power Supply Flexibility

Single Supply 2.8V to 16V

Split Supply

±2.8V to ±8V

s

Guaranteed Max Offset 0.75mV

s

Guaranteed Max Tracking Error Between Input

Pairs

± 0.1%

s

Input Common Mode Range to Both Supply Rails

s

TTL/CMOS Compatible with

±5V or Single 5V

Supply

s

Input Errors are Stable with Time and Temperature

The LTC

manufactured using Linear Technology’s enhanced

LTCMOS

power levels are achieved by internally switching the

comparator ON for short periods of time. The CMOS

output logic holds the output information continuously

while not consuming any power.

In addition to switching power ON, a switched output is

provided to drive external loads during the comparator’s

active time. This allows not only low comparator power,

but low total system power.

Sampling is controlled by an external strobe input or an

internal oscillator. The oscillator frequency is set by an

external RC network.

Each comparator has a unique input structure, giving two

differential inputs. The output of the comparator will be

high if the algebraic sum of the inputs is positive and low

if the algebraic sum of the inputs is negative.

Window Comparator with Symmetric Window Limits

Dual Micropower

Comparator

Typical LTC1040 Supply Current

vs Sampling Frequency

FEATURES

APPLICATIO S

DESCRIPTIO

s

Battery-Powered Systems

s

Remote Sensing

s

Window Comparator

s

BANG-BANG Controllers

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

A + B = “1” WHEN

∆

LTC1040 • TA01

–

–

+

+

–

–

+

+

COMP A

COMP B

LTC1040

0.1

10

100

1000

1,000

LTC1040 • TA02

1

0.10

0.01

1

10

100

10,000

EXTERNALLY STROBED

TYPICAL APPLICATIO

LTCMOS™ is a trademark of Linear Technology Corporation.