LM3914 Datasheet (National Semiconductor)

LM3914, Dot/Bar Display Driver

The LM3914 is a monolithic integrated circuit that senses analog voltage levels and drives 10 LEDs, providing a linear analog display.

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

Current drive to the LEDs is regulated and programmable, eliminating the need for resistors.

This

LM3914 Features

* n n n n n n n n n n Drives LEDs, LCDs or vacuum fluorescents Bar or dot display mode externally selectable by user Expandable to displays of 100 steps Internal voltage reference from 1.2V to 12V Operates with single supply of less than 3V Inputs operate down to ground Output current programmable fro