BA7658AFS

Multimedia ICs Input selector switch for high definition displays BA7658AFS The BA7658AFS is an IC designed for high definition displays, and has an internal selector circuit for broadband RGB signals and HD / VD signals, a synchronization separator circuit, and a NUTEK signal detector circuit. This IC chip simplifies the configuration of input blocks for high-end displays. Applications CRT displays, HDTV, video board for personal computer, etc. Features 1) Operates on a single 5V power supply. 2) Internal broadband RGB selector with a frequency characteristic of 230MHz ( – 3dB) 3) Internal HD / VD selector. 4) Internal separator for synchronization signal superimposed on the G signal. 5) Internal detector for NUTEK power saving signals. Absolute maximum ratings (Ta = 25°C) Parameter Power supply voltage Power dissipation Operating temperature Storage temperature Symbol VCC Pd Topr Tstg Limits 7.0 850∗ – 25 ~ + 75 – 55 ~ + 125 Unit V mW °C °C ∗ Reduced by 8.5mW 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 Multimedia ICs BA7658AFS Block diagram Blue 1 input 1 32 HD 1 input Ground 2 1 2 31 HD 2 input Green 1 input 3 1 30 HD output Ground 4 2 29 Blue output Red 1 input 5 28 Signal detector input Ground 6 1 27 VCC Blue 2 input 7 2 26 Green output Ground 8 Signal DET 25 Composite video input (sync on green) Settin...