TDA8145_04 Datasheet, PDF (1/9 Pages) STMicroelectronics – TV EAST/WEST CORRECTION CIRCUIT FOR SQUARE TUBES

TDA8145
TV EAST/WEST CORRECTION CIRCUIT
FOR SQUARE TUBES
FEATURES SUMMARY
■ LOW DISSIPATION
■ SQUARE GENERATOR FOR PARABOLIC
CURRENT SPECIALLY DESIGNED FOR
SQUARE C.R.T. CORRECTION
■ EXTERNAL KEYSTONE ADJUSTMENT
(symmetry of the parabola)
■ INPUT FOR DYNAMIC FIELD CORRECTION
(beam current change)
■ STATIC PICTURE WIDTH ADJUSTMENT
■ PULSE-WIDTH MODULATOR
■ FINAL STAGE D-CLASS WITH ENERGY
REDELIVERY
■ PARASITIC PARABOLA SUPPRESSION,
DURING FLYBACK TIME OF THE VERTICAL
SAWTOOTH
Figure 1. Package
POWERDIP8
(Plastic Package)
DESCRIPTION
The TDA8145 is a monolithic integrated circuit in a
8 pin minidip plastic package designed for use in
the square C.R.T. east-west pin-cushion correc-
tion by driving a diode modulator in TV and moni-
tor applications.
Figure 2. Pin Connections (top view)
KEYSTONE CORRECTION INPUT
1
FRAME SAWTOOTH CURRENT INPUT
2
CURRENT REFERENCE
3
GND
4
8
NON-INVERTING INPUT 100µA CURRENT SINK
7
PARABOLA OUTPUT INVERTING INPUT
6
+V_S
5
OUTPUT
May 2004
REV. 2
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