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April 2004

TEA2031A

COLOR TV EAST-WEST CORRECTION

REV. 2

FEATURES SUMMARY

EXTERNAL SAW-TOOTH

(beam current)

BUILD IN RECOVERY DIODE

DESCRIPTION

The TEA2031A is intended to ensure frame rate

modulated parabolic and keystone corrections to

the horizontal deflection circuitry of 110

° color TV

sets.

The linear frame saw-tooth is applied to appropri-

ate circuitry from which a corresponding parabolic

waveforms is obtained. This waveform is then fed

to a comparator together with the linear line saw-

tooth for comparison. Comparator’s output drives

the output power stage which is capable of sinking

the external coil currents of up to 0.5A.

An internal recovery diode feeds back to the power

supply the coil fly-back current pulses of as high as

0.5A.

Figure 1. Package

8

1

DIP8

(Plastic Package)