SAA5231 - DATA SLICER FOR TELETEXT PROCESSOR
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.
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 EXTERNA.
