Part Number: LM, Maunfacturer: National Semiconductor, Part Family: LM, File type: PDF, Document: Datasheet – semiconductor. LM datasheet, LM circuit, LM data sheet: NSC – Dot/Bar Display Driver,alldatasheet, datasheet, Datasheet search site for Electronic. LM datasheet, LM circuit, LM data sheet: TI1 – LM Dot/Bar Display Driver,alldatasheet, datasheet, Datasheet search site for Electronic.
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Specified and tested with 10V across the inter. LED brightnessis easily controlled with a single pot.
LM datasheet, Pinout ,application circuits Dot/Bar Display Driver
LED 1 with a 10k resistor. LED current drive is regulated Driver and programmable, eliminating l,3916 need for current limiting Features resistors. The equations in Figure 10 illustrate how to choose resistor. Figure 6 satisfies both datasbeet attack and decay time criteria. The IC contains an adjustable voltage reference and an. Current flowing out of the signal input. Block Diagram of Mode Pin Function. This ensures that pin 9 of. Voltage requirements of the LM also decrease with temperature.
Audio applications include average or peak level indicators, and power meters. Capacitor C1 is required if leads to the LED supply are 6″ or longer.
For bar mode, connect pin 9 to pin 3. The scheme in Figure 13 is useful when the reference and.
For the most current product information visit us at www. Op amps that slew. All previous drivers should have a 20k resistor in.
Dot/Bar Display Driver
The input Buffer drives 10 individual Comparators referenced to the precision divider. In the example illustrated, the resistor string is connected to. Connect pin catasheet of the first. A, LED current is about 0. Since the LED illumi. I LED 2 mA. Low Current Bar Mode Display. At the minimum recommended reference load. Driving Liquid Crystal Display. The whole display system can operate from asingle supply as low as 3V or as high as 25V.
This forces the output of C2 low. A does not normally.
Electrical Characteristics state DC and AC electrical specifications under particular test conditions which. Replacing conventional meters with an LED bar graph results in a faster responding, more rugged display with high visibility that retains the ease of interpreta- tion of an analog display.
LEDs of any color.
Leave the Mode Select. Replacing conventional meters with an LED bar graph results in a faster responding, more rugged Display with high visibility that retains the ease of interpretation of an Datasheeh Display The LM is datashheet easy to apply. Meter in the Typical Applications section for the complete. Bar Mode Note 5. Replacing conventional meters with an n Outputs are current regulated, open collectors LED bar graph results in a faster responding, more rugged n Directly drives TTL or CMOS display with high visibility that retains the ease of interpreta-tion of an analog display.
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The change in output current. In some circuits a number of outputs on the higher device.
The voltage at pin 9 is sensed by comparator C1, nominally. Expanded scale meter applications may have. Satasheet usual cure is bypassing the LED anodes. One pin changes the display from a bar. The negative end of the resistor. Accuracy is typi- cally better than 0. Load capacitance should be less.