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XR-2279

Part Number	XR-2279
Manufacturer	Exar
Description	Dot and Bar-Graph Display Generators
Published	Apr 6, 2018
Detailed Description	XR·2279 Dot and Bar-Graph Display Generators GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM The XR-2279 is a 12 point ...
Datasheet	XR-2279 PDF File

Overview

XR·2279 Dot and Bar-Graph Display Generators GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM The XR-2279 is a 12 point logarithmic dot or bar-graph generator/LED driver_ The device compares an input signal with an adjustable reference and graphically displays the results_ Since LED driving current is provided by on board adjustable current sources, no current lim- iting resistors are required.
A special feature of the XR2279 is the four highest outputs sink one half the current of the lower eight; this allows equivalent brightness with red and green mixed displays.
Dot or bar mode selection is provided.
The twelve out- put levels are in 3 dB steps from - 27 dB to + 6 dB.
The reference poin...

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