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LM3916 Datasheet(PDF) 14 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LM3916
Description  Dot/Bar Display Driver
PDF  27 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM3916 Datasheet(HTML) 14 Page - National Semiconductor (TI)

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Application Hints (Continued)
Other Applications
For increased resolution, it’s possible to obtain a display with
a smooth transition between LEDs. This is accomplished by
superimposing an AC waveform on top of the input level as
shown in
Figure 14. The signal can be a triangle, sawtooth or
sine wave from 60 Hz to 1 kHz. The display can be run in ei-
ther dot or bar mode.
DS007971-19
5mA
≤ ILED ≤ 28 mA
VREF = 5V
FIGURE 12. Independent Adjustment of Reference Voltage and LED Intensity for Multiple Drivers
DS007971-20
1.25V
≤ VREF ≤ 10V
1.5 mA
≤ ILED ≤ 25 mA
Optional circuit for improved intensity matching at low currents. See text.
FIGURE 13. Wide-Range Adjustment of Reference Voltage and LED intensity for Multiple Drivers
www.national.com
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