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NTE1549 - Integrated Circuit Dot/Bar Display Driver

Description

The NTE1549 is a monolithic integrated circuit that senses analog voltage levels and drives ten LEDs, LCDs, or vacuum fluorescent displays, providing an electronic version of the popular VU meter.

One pin changes the display from a bar graph to a moving dot display.

Features

  • D Fast responding electronic VU meter D Drives LEDs, LCDs, or vacuum fluorescents D Bar or dot display mode externally selectable by user D Expandable to displays of 70dB D Internal voltage reference from 1.2V to 12V D Operates with a single supply of 3V to 25V D Inputs operate down to ground D Output current programmable from 1mA to 30mA D Input withstands ±35V without damabe or false outputs D Outputs are current regulated, open collectors D Directly drives TTL or CMOS D The internal 10.

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Datasheet Details

Part number NTE1549
Manufacturer NTE Electronics (defunct)
File Size 29.02 KB
Description Integrated Circuit Dot/Bar Display Driver
Datasheet download datasheet NTE1549 Datasheet

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Full PDF Text Transcription

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NTE1549 Integrated Circuit Dot/Bar Display Driver Description: The NTE1549 is a monolithic integrated circuit that senses analog voltage levels and drives ten LEDs, LCDs, or vacuum fluorescent displays, providing an electronic version of the popular VU meter. 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 3V or as high as 25V. This 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.
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