TDA8145 Datasheet | STMicroelectronics

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 Figure 1. Package - EXTERNAL KEYSTONE ADJUSTMENT (symmetry of the parabola) - INPUT FOR DYNAMIC FIELD CORRECTION )(beam current change) t(s- STATIC PICTURE WIDTH ADJUSTMENT c- PULSE-WIDTH MODULATOR u- FINAL STAGE D-CLASS WITH ENERGY rod REDELIVERY P- PARASITIC PARABOLA SUPPRESSION, DURING FLYBACK TIME OF THE VERTICAL te SAWTOOTH bsole DESCRIPTION OThe 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 correct(stion by driving a diode modulator in TV and monictor applications. du Figure 2. Pin Connections (top view) POWERDIP8 (Plastic Package) solete Pro KEYSTONE CORRECTION INPUT Ob FRAME SAWTOOTH CURRENT INPUT 1 2 8 NON-INVERTING INPUT 100µA CURRENT SINK 7 PARABOLA OUTPUT INVERTING INPUT CURRENT REFERENCE 6 +VS 5 OUTPUT May 2004 REV. 2 1/9 Figure 3. Schematic Diagram CURRENT LIMITER PARATOR AND OUTPUT STAGE 6 +VS Q14 Q15 - 3 VBE Q1 Q13 Q2 Q4 VREF Q13...