LMV7271_08 Datasheet, PDF (1/18 Pages) National Semiconductor (TI) – Single & Dual, 1.8V Low Power Comparators with Rail-to-Rail Input

May 15, 2008
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 consump-
tion 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 5.5V, regardless of
the supply voltage of the LMV7275.
The LMV727X are built with National Semiconductor's ad-
vance submicron silicon-gate BiCMOS process. They all
have bipolar inputs for improved noise performance and
CMOS outputs for rail-to-rail output swing.
Features
(V_S = 1.8V, T_A = 25°C, Typical values unless specified).
■ ^{Single or Dual Supplies}
■ ^{Ultra low supply current}
9µA per channel
■ ^{Low input bias current}
10nA
■ ^{Low input offset current}
200pA
■ ^{Low guaranteed V}_OS
4mV
■ ^{Propagation delay}
880ns (20mV overdrive)
■ ^{Input common mode voltage range 0.1V beyond rails}
■ ^{LMV7272 is available in micro SMD package}
Applications
■ ^{Mobile communications}
■ ^{Laptops and PDA's}
■ ^{Battery powered electronics}
■ ^{General purpose low voltage applications}
Typical Circuit
Part Number
LMV7271
LMV7272
LMV7275
Single/
Dual
Single
Dual
Single
Package Output
SC70,
SOT23
Push/Pull
micro SMD Push/Pull
SC70, Open Drain
SOT23
20064024
FIGURE 1. Threshold Detector
© 2008 National Semiconductor Corporation 200640
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