LMV7291

Single 1.8V Low Power Comparator with Rail-to-Rail

Input

General Description

The LMV7291 is a rail-to-rail input low power comparator,

characterized at supply voltage 1.8V, 2.7V and 5.0V. It con-

sumes only 9uA supply current per channel while achieving

a 800ns propagation delay.

The LMV7291 is available in SC70 package. With this tiny

package, the PC board area can be significantly reduced. It

is ideal for low voltage, low power and space critical designs.

The LMV7291 features a push-pull output stage which al-

lows operation with minimum power consumption when driv-

ing a load.

The LMV7291 is built with National Semiconductor’s ad-

vance submicron silicon-gate BiCMOS process. It has bipo-

lar inputs for improved noise performance and CMOS out-

puts for rail-to-rail output swing.

Features

(V

n

Single Supply

n

Ultra low supply current

9µA per channel

n

Low input bias current

10nA

n

Low input offset current

200pA

n

Low guaranteed V

OS

4mV

n

Propagation delay

880ns (20mV overdrive)

n

Input common mode voltage range

0.1V beyond rails

Applications

n

Mobile communications

n

Laptops and PDA’s

n

Battery powered electronics

n

General purpose low voltage applications

Typical Circuit

20080024

FIGURE 1. Threshold Detector

March 2004

© 2004 National Semiconductor Corporation

DS200800

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