LM3914N-1/NOPB ,Dot/Bar Display Driver 18-PDIP 0 to 70ELECTRICAL CHARACTERISTICS(1)Parameter Conditions Min Typ Max UnitsCOMPARATOROffset Voltage, Buffer ..
LM3914V ,Dot/Bar Display DriverGeneral Descriptionoutputsareindividual,DCregulatedcurrents.VariouseffectsThe LM3914 is a monolithi ..
LM3914VX ,Dot/Bar Display DriverFeaturesprecision divider. Indication non-linearity can thus be held1typically to ⁄2%, even over a ..
LM3915 ,Dot/Bar Display Driver
LM3915N ,Dot/Bar Display DriverFeaturessupply as low as 3V or as high as 25V.n 3 dB/step, 30 dB rangeThe IC contains an adjustable ..
LM3915N-1 ,Dot/Bar Display DriverFeaturessupply as low as 3V or as high as 25V.n 3 dB/step, 30 dB rangeThe IC contains an adjustable ..
LMX2310USLDX ,2.5 GHz PLLatinum Ultra Low Power Frequency Synthesizer for RF Personal CommunicationsLMX2310U/LMX2311U/LMX2312U/LMX2313U PLLatinum Ultra Low Power Frequency Synthesizerfor RF Personal ..
LMX2312USLDX ,1.2 GHz PLLatinum Ultra Low Power Frequency Synthesizer for RF Personal CommunicationsBlock Diagram20043822PLLatinum™ is a trademark of National Semiconductor Corporation. 2003 National ..
LMX2315TM ,Frequency Synthesizer for RF Personal CommunicationsLMX2314/LMX2315PLLatinum1.2GHzFrequencySynthesizerforRFPersonalCommunicationsMarch1995TMLMX2314/LMX ..
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LMX2316TM ,1.2 GHz PLLatinum Low Power Frequency Synthesizer for RF Personal CommunicationsApplicationscan range from 2.3V to 5.5V. The LMX2306/16/26 featureultra low current consumption; LM ..
LMX2316TMX ,1.2 GHz PLLatinum Low Power Frequency Synthesizer for RF Personal CommunicationsBlock Diagram10012701®TRI-STATE is a registered trademark of National Semiconductor Corporation.Fas ..
LM3914N-1/NOPB
Dot/Bar Display Driver 18-PDIP 0 to 70
LM3914
www.ti.com SNVS761B –JANUARY 2000–REVISED MARCH 2013
LM3914 Dot/Bar Display Driver
Checkfor Samples: LM3914Versatility was designed into the LM3914 so that
1FEATUREScontroller, visual alarm, and expanded scale functions
Drives LEDs, LCDsor Vacuum Fluorescents are easily addedonto the display system. The circuit
Baror Dot Display Mode Externally Selectable can drive LEDs of many colors, or low-current
User incandescent lamps. Many LM3914s can be
“chained” to form displays of 20 to over 100
• Expandableto Displaysof 100 Steps segments. Both ends of the voltage divider are
• Internal Voltage Reference from 1.2Vto 12V externally available so that2 drivers can be made
Operates with Single Supplyof Less than 3V intoa zero-center meter.
Inputs Operate Downto Ground The LM3914is very easy to apply as an analog
Output Current Programmable from2 mAto30 meter circuit.A 1.2V full-scale meter requires only1
resistor anda single 3Vto 15V supplyin additionto
mAthe 10 display LEDs.If the1 resistorisa pot,it
• No Multiplex Switchingor Interaction Between becomes the LED brightness control. The simplified
Outputs block diagram illustrates this extremely simple
• Input Withstands ±35V without Damageor external circuitry.
False Outputs Whenin the dot mode, thereisa small amountof
• LED Driver Outputs are Current Regulated, overlapor “fade” (about1 mV) between segments.
Open-collectors This assures thatat no time willall LEDs be “OFF”,
and thus any ambiguous displayis avoided. Various
• Outputs can Interface with TTLor CMOS Logicnovel displays are possible.
• The Internal 10-step Divideris Floating and
canbe Referencedtoa Wide Rangeof Muchof the display flexibility derives from the fact
Voltages thatall outputs are individual, DC regulated currents.
Various effects can be achievedby modulating these
currents. The individual outputs can drivea transistor
DESCRIPTION as well asa LEDat the same time, so controllerThe LM3914isa monolithic integrated circuit that functions including “staging” control can besenses analog voltage levels and drives 10 LEDs, performed. The LM3914 can also act as aprovidinga linear analog display. A single pin programmer,or sequencer.changes the display froma moving dottoa bar
graph. Current driveto the LEDsis regulated and The LM3914is rated for operation from 0°Cto +70°C.programmable, eliminating the need for resistors. The LM3914N-1is available in an 18-lead PDIP allows operationof the whole (NFK) package. The following typical application illustrates adjusting own reference and of the reference toa desired value, and proper divider. The low-bias-current grounding for accurate operation, and avoidingorV−, above divider.
Indication non-linearity held typicallyto
