STV2145

STV2145 I2C BUS CONTROLLED EAST-WEST AND VERTICAL INTERFACE . . . . . . . INTEGRATED VERTICAL SAWTOOTH GENERATOR WITH AMPLITUDE CONTROL LOOP (50Hz - 60Hz) INTERLACE MODE INTRINSICALLY CONTROLLED BY STV2118A VERTICAL SIZE CORRECTION (BREATHING) TO ADAPT DEFLECTION SENSITIVITY TO THE CURRENT BEAM (HIGH VOLTAGE VARIATION) BUS ADJUSTED VERTICAL PARAMETERS : VERTICAL AMPLITUDE, VERTICAL POSITION AND S-CORRECTION EAST-WEST FUNCTION GENERATOR WITH INTEGRATED ERROR AMPLIFIER (THUS, ONLY 1 EXTERNAL POWER DARLINGTON IS NECESSARY FOR EW-FUNCTION) BUS CONTROLLED EAST-WEST FUNCTIONS : EW-AMPLITUDE, HORIZONTAL WIDTH, EW-TILT AND EW-SHAPE (CORNER CORRECTION) OVERSIZE BLANKING (VERTICAL AND HORIZONTAL) WHICH PERMIT ZOOM AND SUBTITLE FACILITIES FOR 4/3 AND 16/9 CRTs DESCRIPTION The STV2145 is an I2C bus processor containing the vertical deflection East-West functions and oversize blanking. This circuit is foreseen as ADDON for the Video Chroma Processor STV2118A to permit 110° CRT applications covering standard 4/3 screen format and new 16/9 format with zoom and subtitle facilities. STV2145 has been designed to drive a standard TDA8172/8177 vertical booster and an external transistor for East-West. DIP16 (Plastic Package) ORDER CODE : STV2145 PIN CONNECTIONS I2C BUS SERIAL CLOCK I C BUS SERIAL DATA VERTICAL RETRACE PULSE (FROM STV2118A) REGULATOR OUTPUT FOR SERIES TRANSISTOR REGULATED VOLTAGE SUPPLY 2 SCL SDA VRET REG V CC LPF 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 SENSM SENSP FROUT...