Dot/Bar Display Driver

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.
The LM3915 's 3 dB/step Display is suited for signals with wide dynamic range, such as Audio level, power, light intensity or vibration. Audio applications include average or peak level indicators, power meters and RF signal strength meters. Replacing conventional meters with an LED bar graph results in a faster responding, more rugged Display with high visibility that retains the ease of interpretation of an Analog Display
The LM3915 is extremely easy to apply. A 1.2V full-scale meter requires only one resistor in addition to the ten LEDs One more resistor programs the full-scale anywhere from 1.2V to 12V independent of supply voltage. LED brightness is easily controlled with a single pot.
The LM3915 is very versatile. The outputs CAN drive LCDs vacuum fluorescents and incandescent bulbs as well as LEDs of any color. Multiple devices CAN be cascaded for a dot or bar mode Display with a range of 60 or 90 dB. LM3915 s CAN also be cascaded with LM3914 s for a linear/log Display or with LM3916 for an extended-range VU meter.
By National Semiconductor Corporation
LM3915 's PackagesLM3915 's pdf datasheet
LM3915N-1 DIP




LM3915 Pinout, Pinouts
LM3915 pinout,Pin out
This is one package pinout of LM3915,If you need more pinouts please download LM3915's pdf datasheet.

LM3915 Application circuits
LM3915 circuits
This is one application circuit of LM3915,If you need more circuits,please download LM3915's pdf datasheet.


Related Electronics Part Number

Related Keywords:

LM3915 Pb-Free LM3915 Cross Reference LM3915 Schematic LM3915 Distributor
LM3915 Application Notes LM3915 RoHS LM3915 Circuits LM3915 footprint