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XR-2279 Datasheet Dot and Bar-Graph Display Generators

Manufacturer: Exar (now MaxLinear)

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.

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Overview

XR·2279 Dot and Bar-Graph Display Generators GENERAL.

Key Features

  • Direct LED Interface Constant Three dB/Step Logarithmic Scale External Dot/Bar Mode Select for Dot/Bar-Graph Formats Adjustable Output Current Levels Current Source Outputs.