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XR-2278 Datasheet Dot and Bar Graph Display Generators

Manufacturer: Exar (now MaxLinear)

Download the XR-2278 datasheet PDF. This datasheet also includes the XR-2277 variant, as both parts are published together in a single manufacturer document.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (XR-2277-Exar.pdf) that lists specifications for multiple related part numbers.

General Description

FUNCTIONAL BLOCK DIAGRAM The XR-2277 and XR-2278 are 12 point level detector circuits designed for direct interfacing to light emitting diode (LED) moving-dot or bar-graph displays.

Each of the circuits is comprised of an input buffer amplifier and 12 comparators, biased from a resistor string at logarithmic intervals.

Accuracy is enhanced by an internal reference.

Overview

XR·2277/2278 Dot and Bar Graph Display Generators GENERAL.

Key Features

  • High Impedance Buffered Input Direct LED Interface Constant Current Outputs External Dot/Bar Mode Select.

More Datasheets from Exar (now MaxLinear)

Part Number Description
XR-2271 Fluorescent Display Driver
XR-2272 High-Voltage 7-Digit Display Driver
XR-2276 Bar Graph Display Generator
XR-2277 Dot and Bar Graph Display Generators
XR-2279 Dot and Bar-Graph Display Generators
XR-2200 Hammer Driver
XR-2201 High Voltage High Current Darlington Transistor Arrays
XR-2202 High Voltage High Current Darlington Transistor Arrays
XR-2203 High Voltage High Current Darlington Transistor Arrays
XR-2204 High Voltage High Current Darlington Transistor Arrays