LMV7272| Datasheet

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

September 2003

LMV7271/LMV7275/LMV7272 Single & Dual, 1.8V Low Power Comparators with Rail-to-Rail Input
General Description
The LMV727X are rail-to-rail input low power comparators, which are characterized at supply voltage 1.8V, 2.7V and 5.0V. They consume only 9uA supply current per channel while achieving a 800ns propagation delay. The LMV7271/LMV7275 (single) are available in SC70 and SOT23 packages. The LMV7272 (dual) is available in micro SMD package. With these tiny packages, the PC board area can be significantly reduced. They are ideal for low voltage, low power and space critical designs. The LMV7271/LMV7272 both feature a push-pull output stage which allows operation with minimum power consumption when driving a load. The LMV7275 features an open drain output stage that allows for wired-OR configurations. The open drain output also offers the advantage of allowing the output to be pulled to any voltage up to 5V, regardless of the supply voltage of the LMV7275. The LMV727X are built with National Semiconductor's advance submicron silicon-gate BiCMOS process. They all have bipolar inputs for improved noise performance an
d CMOS outputs for rail-to-rail output swing.

Features
(VS = 1.8V, TA = 25 C, Typical values unless specified). n Single or Dual Supplies n Ultra low supply current 9uA per channel n Low input bias current 10nA n Low input offset current 200pA n Low guaranteed VOS 4mV n Propagation delay 880ns (20mV overdrive) n Input common mode voltage range 0.1V beyond rails n LMV7272 is available in micro SMD package

Applications
n n n n Mobile communications Laptops and PDA's Battery powered electronics General purpose low voltage applications

Typical Circuit

Part Number Single/Dual LMV7271 LMV7272 LMV7275 Single Dual Single

Package SC70, SOT23 micro SMD SC70, SOT23

Output Push/Pull Push/Pull Open Drain

20064024

FIGURE 1. Threshold Detector

2003 National Semiconductor Corporation

DS200640

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