BA7078AF

BA7078AF/AS Multimedia ICs Synchronization signal processor for high definition displays BA7078AF/AS The BA7078AF is a synchronization signal processing LSI chip designed for multiscan high-definition displays. It generates a synchronization signal and clamp pulse for three types of input signals: separate synchronization, composite synchronization, and synchronization on video. !Application CRT displays !Features 1) Operates on a single 5V power supply, with low power consumption. 2) Synchronization signal existence and polarity detec-tion output. 3) Adjustable clamp pulse width, allowing for the selec-tion of front or back editing. 4) Vertical synchronization separation is based on hori-zontal frequency tracking, for separation starting at 1H. 5) Minimal attached components. !Absolute maximum ratings (Ta = 25°C) Parameter Power supply voltage Power dissipation Operating temperature Symbol VCC ∗1 Limits 7.0 450(BA7078AF) 600(BA7078AS) −25 to +75 ∗2 Unit V mW °C °C Pd Topr −55 to +125 Tstg Storage temperature ∗1 Reduced by 4.5mW for each increase in Ta of 1°C over 25°C. ∗2 Reduced by 6.0mW for each increase in Ta of 1°C over 25°C. !Recommended operating conditions (Ta = 25°C) Parameter Power supply voltage Symbol VCC Min. 4.5 Typ. 5.0 Max. 5.5 Unit V 1/12 BA7078AF/AS Multimedia ICs !Block diagram HSCTL 1 18 POLH C / HSYNC IN 2 H SYNC DET. 17 EXIH VIDEO IN 3 SYNC SEPA. 16 POLV VSEPA 4 HOR. SYNC CONTROL V SYNC SEPA. 15 EXIV VSYNC IN 5 14 Vcc CV...