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CA3224E - Automatic Picture Tube Bias Control Circuit

Datasheet Summary

Description

The CA3224E is an automatic picture tube bias control circuit used in color TV receiver CRT drive circuits.

It is used to provide dynamic bias control of the grey scale both initially and over the CRT operating life, compensating for CRT cutoff changes.

Features

  • Automatic Picture Tube Bias Cutoff Control.
  • Automatic Background Color Balance.
  • Eliminates Grey Scale Adjustments.
  • Compensates for Cathode-to-Heater Leakage.
  • Electrostatic Protection on All Pins.
  • Servo Loop Design.
  • Wide Dynamic Range.
  • Three-Gun Control.
  • Minimal External Components Part Number Information PART NUMBER CA3224E TEMP. RANGE (oC) -40 to 85.

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Datasheet preview – CA3224E

Datasheet Details

Part number CA3224E
Manufacturer Intersil Corporation
File Size 164.29 KB
Description Automatic Picture Tube Bias Control Circuit
Datasheet download datasheet CA3224E Datasheet
Additional preview pages of the CA3224E datasheet.

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Full PDF Text Transcription

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® CA3224E DUCT E NT E PRO T E L O LACEM P E Sheet OBS DataD R ED MEN ECOM October 2002 FN1553.2 NO R Automatic Picture Tube Bias Control Circuit Description The CA3224E is an automatic picture tube bias control circuit used in color TV receiver CRT drive circuits. It is used to provide dynamic bias control of the grey scale both initially and over the CRT operating life, compensating for CRT cutoff changes. The CA3224E provides automatic continuous control of the cutoff current in each gun of a three-gun color CRT. From an input pulse amplitude proportional to the difference between the desired and the actual CRT cutoff, a gated sample/hold circuit generates a DC correction voltage which correctly biases the CRT driver circuit.
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