SAA5231

SAA5231 DATA SLICER FOR TELETEXT PROCESSOR s SEPARATION OF TELETEXT DATA FROM THE COMPOSITE VIDEO SIGNAL s SEPARATION OF HORIZONTAL AND VERTICAL SYNCHRONIZATION SIGNALS FROM THE COMPOSITE VIDEO SIGNAL s EXTERNAL OSCILLATOR GENERATING 6MHz SIGNAL SYNCHRONIZED TO A MULTIPLE OF THE LINE FREQUENCY BY PLL s A 6.9375MHz CLOCK GENERATED FROM AN EXTERNAL QUARTZ CRYSTAL s ”AFTER-HOURS” SYNCHRONIZATION OPTION s PROGRAMMABLE LEVELS FOR THE INPUT COMPOSITE VIDEO SIGNAL (1V OR 2.5V) s PROCESSING OF EXTERNAL TELETEXT DATA s OUTPUT OF POSITIVE OR NEGATIVE SYNCHRONIZING SIGNALS s 28 PIN DIP PACKAGE s HDS2P2 TECHNOLOGY DESCRIPTION The SAA5231 is a monolithic integrated circuit in 28 Pin DIP package designed to separate Teletext signals from TV signal. DIP28 (Plastic Package) ORDER CODE : SAA5231 PIN CONNECTIONS Sync. Output Video Input Level Select HF Filter Store HF Store Amplitude Store Zero Level External Data Input Data Timing Store Phase VCR Xtal Clock Filter Ground Clock Output (TTC) 1 ...