COLOR TV EAST-WEST CORRECTION
TEA2031A
COLOR TV EAST-WEST CORRECTION
FEATURES SUMMARY
■ BUILD IN FRAME PARABOLA FROM EXTERNAL SAW-TOOTH
Figure 1. P...
Description
TEA2031A
COLOR TV EAST-WEST CORRECTION
FEATURES SUMMARY
■ BUILD IN FRAME PARABOLA FROM EXTERNAL SAW-TOOTH
Figure 1. Package
■ PARABOLA CORRECTION ADJUSTMENT
■ KEYSTONE CORRECTION ADJUSTMENT
■ LINE SIZE ADJUSTMENT
■ LINE DYNAMIC CORRECTION POSSIBILITY
(beam current)
)■ D CLASS OUTPUT MODULATOR WITH t(sBUILD IN RECOVERY DIODE c■ 50 OR 60Hz OPERATION du■ LOW DISSIPATION ro■ FEW EXTERNAL COMPONENTS lete PDESCRIPTION oThe TEA2031A is intended to ensure frame rate smodulated parabolic and keystone corrections to bthe horizontal deflection circuitry of 110° color TV Osets. -The linear frame saw-tooth is applied to appropri)ate circuitry from which a corresponding parabolic t(swaveforms is obtained. This waveform is then fed cto a comparator together with the linear line sawutooth for comparison. Comparator’s output drives dthe output power stage which is capable of sinking rothe external coil currents of up to 0.5A. PAn internal recovery diode feeds back to the power
supply the coil fly-back current pulses of as high as
Obsolete0.5A.
8
1
DIP8 (Plastic Package)
April 2004
REV. 2
1/11
TEA2031A
Figure 2. Pin Connections
MULTIPLIER INPUT 1 1 AND 2 CAN BE INVERTED
MULTIPLIER INPUT 2
CURRENT REFERENCE
GROUND
1 2 3 4
8 COMPARATOR INPUT 2 7 MULTIPLIER OUTPUT AND COMPARATOR INPUT 1 6 VCC POWER SUPPLY 5 OUTPUT
Figure 3. Block Diagram
Line SAW-TOOTH
t(s)VCC +24V
uc8 7 6 d100Ω
lete Pro50µA
VCC
Comparator
120µA
bsoK . (I1 - I2) 2
6.8mH 5
To DIODE MODULATOR
) - OMultip...
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