Description

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.

Features

•  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 from 2 mA to 30 mA
• No multiplex switching or interaction between outputs
• Input withstands ±35V without damage or false outputs
• LED driver outputs are current regulated, open-collectors
• Outputs can interface with TTL or CMOS logic
• The internal 10-step divider is floating and can be referenced to a wide range of voltages

Document:

Datasheet