LM3915N - Dot / Bar Display Driver

The LM3915 is a Logarithmic Display Driver IC commonly used in visualizing audio signals. It can drive both 10-segment Bar LED and Dot Matrix LED. The IC also allows the reference voltage and LED current to be easily programmed based on the application by selecting the right value of resistors.

Specifications

• Analog Controlled LED Driver IC with Logarithmic output
• LED incremented by one step for every 3dB
• Monitor up to 30dB using 10 LEDs
• Number of controllable LEDs: 10
• Operating Voltage: 3V to 25V
• Reference Voltage: 1.2V to 12V
• LED sink current: 1mA to 30mA (programmable)
• Both Dot/Bar mode available
• Available in 18-pin DIP, PLCC package