National Semiconductor LMV7271 LMV7275 LMV7272 Single & Dual, 1.8V Low Power Comparators with Rail-to-Rail Input

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LM 7271/LM 7275/LM ingle ual,1.8V Low ow er om parators ith ail-to-R ail Input

LMV7271/LMV7275/LMV7272 Single Dual, 1.8V Low Power Comparators with Rail-to-Rail Input General Description Features The LMV727X are rail-to-rail input low power comparators, (VS 1.8V, TA 25˚C, Typical values unless specified). which are characterized at supply voltage 1.8V, 2.7V and Single or Dual Supplies 5.0V. They consume only 9u A supply current per channel

Ultra low supply current 9µA per channel

while achieving 800ns propagation delay.

Low input bias current 10n A

The LMV7271/LMV7275 (single) are available in SC70 and

Low input offset current 200p A

SOT23 packages. The LMV7272 (dual) is available in micro

Low guaranteed VOS 4m V

SMD package. With these tiny packages, the PC board area

Propagation delay 880ns (20m V overdrive)

can be significantly reduced. They are ideal for low voltage,

Input common mode voltage range 0.1V beyond rails

low power and space critical designs.

LMV7272 is available in micro SMD package

The LMV7271/LMV7272 both feature push-pull output stage which allows operation with minimum power consump-

Applications

tion when driving load. The LMV7275 features an open

drain output stage that allows for wired-OR configurations. Mobile communications

The open drain output also offers the advantage of allowing Laptops and PDA’s the output to be pulled to any voltage up to 5V, regardless of

Battery powered electronics

the supply voltage of the LMV7275.

General purpose low voltage applications

The LMV727X are built with National Semiconductor’s ad- vance submicron silicon-gate Bi CMOS process. They all have bipolar inputs for improved noise performance and CMOS outputs for rail-to-rail output swing.

Typical Circuit Part Number Single/Dual Package Output

LMV7271 Single SC70, Push/Pull

SOT23

LMV7272 Dual micro SMD Push/Pull LMV7275 Single SC70, Open Drain

SOT23

FIGURE 1. Threshold Detector

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