Dot/Bar Display Driver - LM3916 (VU Taper)
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This is the LM3916 Dot/Bar display analog-controlled LED driver that uses a more logarithmic/VU scale, which makes it well-suited to audio applications like VU meters. With this driver all it takes is a single, analog signal to drive a string of 10+ LEDs, which can be configured into either bar mode (where all LEDs below a certain point turn on) or dot mode (with only a single LED on at a time). Hook them up properly, and you can create all sorts of nifty multi-LED displays.
Audio applications include average or peak level indicators, and power meters. 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 analog display.
- Fast Responding Electronic VU Meter
- Drivers LEDs, LCDs, or Vacuum Fluorescents
- Bar or Dot Display Mode Externally Selectable
Expandable to Displays of 70 dB
- Internal Voltage Reference from 1.2V to 12V
- Operates with Single Supply of 3V to 25V
Directly Drives TTL or CMOS