Robotics Pitstop

LM3915N LM3915 Led Dot/Bar Display Driver

45.00

  • 3 dB/step, 30 dB Range
  • Drives LEDs, LCDs, or Vacuum Fluorescents
  • Operates with Single Supply of 3V to 25V

Availability: 3 in stock

SKU: 1063 Category:

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 programmable, eliminating the need for current limiting resistors. The whole display system can operate from a single supply as low as 3V or as high as 25V.
The IC contains an adjustable voltage reference and an accurate ten-step voltage divider. The high impedance input buffer accepts signals down to ground and up to within 1.5V of the positive supply. Further, it needs no protection against inputs of ±35V. The input buffer drives 10 individual comparators referenced to the precision divider. Accuracy is typically better than 1 dB.