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LM3915 Datasheet Dot/bar Display Driver

Manufacturer: National Semiconductor (now Texas Instruments)

Overview: LM3915 Dot/Bar Display Driver January 2000 LM3915 Dot/Bar Display.

This datasheet includes multiple variants, all published together in a single manufacturer document.

General 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.

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.

Key Features

  • n n n n n n n n n n n n 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 f.

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Similar Datasheet

Brand Logo Part Number Description Manufacturer
Texas Instruments Logo LM3915 Dot/Bar Display Driver Texas Instruments
Texas Instruments Logo LM3915N Dot/Bar Display Driver Texas Instruments

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