LM3914 Dot/Bar Display Driver IC DIP-18 Package

Description

The LM3914 is a monolithic integrated circuit that detects analog voltage levels and operates ten LEDs to create a linear analog display. With a single pin, the display transforms from a moving dot to a bar graph. The LEDs’ current drive is regulated and customizable, removing the need for resistors. This is a feature that allows the entire system to run on less than 3V. The circuit has its own adjustable reference and a 10-step voltage divider that is quite accurate. The low-bias-current input buffer takes signals as low as V and requires no protection against 35V inputs above or below ground. The precision divider is accessed by the buffer, which drives ten separate comparators. Thus, even across a wide temperature range, indication non-linearity can be kept to below 12%.

Pinout