BA7625

Multimedia ICs Video signal switcher for AV amplifiers BA7625 The BA7625 is a video signal switch that contains two five-channel analog multiplexers and wide-band 6dB amplifiers.It designed for use in video cassette recorders. By simply adding transistor buffers to the outputs,it is possible to construct arecord / playback switch for two record / playback VCRs, and three video playback machines (eg.laser disk players). Input switching and VCR record switching can be done independently. The BA7625 has sync-tip clamp inputs which are ideal for switching video signals. Applications AV amplifiers and video selectors Features 1) 5-input / 3-output switches. 2) Sync-tip clamp inputs. 3) Built-in 6dB amplifiers. 4) 5V supply voltage. Absolute maximum ratings (Ta = 25°C) Parameter Power supply voltage Power dissipation Operating temperature Storage temperature Symbol VCC Pd Topr Tstg Limits 9 500∗ – 25 ~ + 70 – 55 ~ + 125 Unit V mW °C °C ∗ Reduced by 5mW for each increase in Ta of 1°C over 25°C. 1 Multimedia ICs BA7625 Block diagram Monitor OUT GND IN5 GND IN4 CTL E IN3 CTL D 1 2 3 4 5 6 7 logic 6dB logic 16 15 14 13 12 11 10 9 IN1 CTL A VOUT1 VCC IN2 CTL B VOUT 2 CTL C 6dB 8 Truth table A L H L H H B L L H H H E Monitor OUT IN1 IN2 IN3 IN4 IN5 C L H L H H D L L H H H E VOUT1 — IN2 IN3 IN4 IN5 C L H L H H D L L H H H E VOUT2 IN1 — IN3 IN4 IN5 ∗ ∗ ∗ L H ∗ ∗ ∗ L H ∗ ∗ ∗ L H Note 1: ∗ indicates "don't care" (H or L). 2 Multimedia ICs BA7625 Equivalent input / ...