Texas Instruments LM3915
The LM3915 is Rated for Operation from 0°C to +70°C. The LM3915N-1 is Available in an 18lead PDIP Package. DESCRIPTION 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.| Part No. | LM3915 |
|---|---|
| Datasheet | LM3915 Download |
| Manufacturer |  Texas Instruments |
| Description | Dot/Bar Display Driver |
| Buy | Stock & Price |
FEATURES
1●2 3 dB/step, 30 dB Range
● Drives LEDs, LCDs, or Vacuum Fluorescents
● Bar or Dot Display Mode Externally Selectable by User
● Expandable to Displays of 90 dB
● Internal Voltage Reference from 1.2V to 12V
● Operates with Single Supply of 3V to 25V
● Inputs Operate Down to Ground
● Output Current Programmable from 1 mA to 30 mA
● Input Withstands ±35V without Damage or False Outputs
● Outputs are Current Regulated, Open Collectors
● Directly Drives TTL or CMOS
● The Internal 10-step Divider is Floating and can be Referenced to a Wide Range of Voltages 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 highimpedance input buffer accepts signals down to ground and up to within 1.5V of the positive supply.
