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LMV7251M7X Datasheet

  • LMV7251M7X

  • 1.8V Low Voltage Comparator with Rail-to-Rail Input

  • 11頁

  • NSC

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LMV7251/LMV7255 1.8V Low Voltage Comparator with Rail-to-Rail Input
January 2001
LMV7251/LMV7255
1.8V Low Voltage Comparator with Rail-to-Rail Input
General Description
The LMV7251/LMV7255 are rail-to-rail input low voltage
comparators, which can operate at supply voltage range of
1.8V to 5.0V. The LMV7251/LMV7255 are available in space
saving SC-70 or SOT23-5 packages. These comparators
are ideal for low voltage and space critical designs.
The LMV7251 features a push-pull output stage. This feature
allows operation with minimum power consumption when
driving a load.
The LMV7255 features an open drain output. This allows the
connection of an external resistor at the output. The output of
the comparator can be used as a level shifter.
The IC鈥檚 are built with National Semiconductor鈥檚 advance
Submicron
Silicon-Gate
BiCMOS
process.
The
LMV7251/LMV7255 have bipolar inputs for improved noise
performance and CMOS outputs for better rail-to-rail output
performance.
Features
(V
S
= 1.8V, T
A
= 25藲C, Typical values unless specified).
n
Single or Dual Supplies
n
Low supply voltage
1.8V to 5.0V
n
Ultra low supply current
11碌A(chǔ)
n
Low input bias current
14nA
n
Low input offset current
200pA
n
Low input offset voltage
+/鈭?.3mV
n
Response time
670ns (20mV overdrive)
n
Input common mode voltage
0.1V beyond rails
Applications
n
n
n
n
Mobile communications
Laptops and PDA鈥檚
Battery powered electronics
General purpose low voltage applications
Typical Circuit
Connection Diagram
DS200057-1
Top View
DS200057-2
FIGURE 1. Threshold Detector
漏 2001 National Semiconductor Corporation
DS200057
www.national.com

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