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LM2924MNSN/a16avaiLow Power Operational Amplifier/Voltage Comparator


LM2924M ,Low Power Operational Amplifier/Voltage ComparatorFEATURESn Eliminates need for dual power suppliesn Low output saturation voltage: 250 mV at 4 mAn A ..
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LM2924M
Low Power Operational Amplifier/Voltage Comparator
LM392/LM2924
Low Power Operational Amplifier/Voltage Comparator
General Description

The LM392 series consistsof2 independent building block
circuits. Oneisa high gain, internally frequency compen-
sated operational amplifier,andthe otherisa precision volt-
age comparator. Boththe operational amplifierandthe volt-
age comparator have been specifically designedto operate
froma single power supply overa wide rangeof voltages.
Both circuits have input stages whichwill common-modein-
put downto groundwhen operatingfroma single powersup-
ply. Operation fromsplit power suppliesis also possibleand
thelow power supply currentis independentofthe magni-
tudeofthe supply voltage.
Application areas include transducer amplifier with pulse
shaper,DC gain blockwith level detector,VCO, aswellasall
conventional operational amplifieror voltage comparatorcir-
cuits. Both circuitscanbe operated directly fromthe stan-
dard5 VDC power supply voltage usedin digital systems,
andthe outputofthe comparatorwill interface directly with
either TTLor CMOS logic.In addition,thelow power drain
makesthe LM392 extremely usefulinthe designof portable
equipment.
Advantages
Eliminates needfor dual power suppliesAn internally compensatedop ampanda precision
comparatorinthe same package Allows sensingator near ground Power drain suitablefor battery operation Pin-outisthe sameas boththe LM358 dualop ampand
the LM393 dual comparator
Features
Wide power supply voltage range
Single supply: 3Vto 32V
Dual supply: ±1.5Vto ±16V Low supply current drain—essentially independentof
supply voltage: 600μA Low input biasing current: 50nA Low input offset voltage:2mV Low input offset current:5nA Input common-mode voltage range includes ground Differential input voltage range equaltothe power
supply voltage
ADDITIONALOP AMP FEATURES
Internally frequency compensatedfor unity gain LargeDC voltage gain: 100dB Wide bandwidth (unity gain):1 MHz Large output voltage swing: 0VtoV+− 1.5V
ADDITIONAL COMPARATOR FEATURES
Low output saturation voltage: 250mVat4mA Output voltage compatiblewithall typesof logic systems
Connection Diagram
(AmplifierA= Comparator)
(AmplifierB= Operational Amplifier)
Dual-In-Line Package

DS007793-1
(Top View)
Order Number LM392Mor LM2924M
SeeNS Package Number M08A
Order Number LM392Nor LM2924N
SeeNS Package Number N08E

April 1998
LM392/LM2924
Low
Power
Operational
Amplifier/V
oltage
Comparator
1999 National Semiconductor Corporation DS007793
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