NTE1508

NTE1508 Integrated Circuit 10–Step Dot/Bar Display Driver for Linear Scale Description: The NTE1508 is a monolithic integrated circuit in an 18–Lead DIP type package that senses analog voltage levels and drives 10 LEDs, providing a linear analog display. A single pin changes the display from a moving dot to a bar graph. Current drive to the LEDs is regulated and programmable, eliminating the need for resistors. This feature is one that allows operation of the whole system from less than 3V. The circuit contains its own adjustable reference and accurate 10–step voltage divider. The low– bias–current input buffer accepts signals down to GND, or V–, yet needs no protection against inputs of 35V above or below GND. The buffer drives 10 individual comparators referenced to the precision divider. Indication non–linearity can thus be held typically to 1/2%, even over a wide temperature range. Versatility was designed into the NTE1508 so that controller, visual alarm, and expanded scale functions are easily added on to the display system. The circuit can drive LEDs of many color, or low–current incandescent lamps. Many NTE1508s can be “chained” to form displays of 20 to over 100 segments. Both ends of the voltage divider are externally available so that 2 drivers can be made into a zero–center meter. www.DataSheet4U.com The NTE1508 is very easy to apply as an analog meter circuit. A 1.2V full–scale meter requires only 1 resistor and a single 3V to 15V supply in addition to the 10 dis...