LM3915N Datasheet (National Semiconductor)

LM3915N, Dot/Bar Display Driver

The LM3915 is a monolithic integrated circuit that senses analog voltage levels and drives ten LEDs, LCDs or vacuum fluorescent displays, providing a logarithmic 3 dB/step analog display.

One pin changes the display from a bar graph to a moving dot display.

LED current drive is regulated and program

LM3915N Features

* n 3 dB/step, 30 dB range n Drives LEDs, LCDs, or vacuum fluorescents n Bar or dot display mode externally selectable by user n Expandable to displays of 90 dB n Internal voltage reference from 1.2V to 12V n Operates with single supply of 3V to 25V n Inputs operate down to ground n Output current pro