BA7609F

Multimedia ICs Video signal switcher BA7609 / BA7609F The BA7609 and BA7609F are switching ICs developed for use in VCRs. Each contains three two-channel analog multiplexers. As one of the switches has sync-tip clamp inputs and the other two have non-clamped inputs these ICs are ideal for switching audio, video and chroma signals. Applications Video cassette recorders and televisions Features 1) Three 2-input / 1-output switches (one with syncclamped inputs, the other two non-clamped). 2) 5V power supply. 3) Low power consumption (62.5mW Typ.). 4) Excellent frequency characteristics (10MHz, 0dB Typ.). 5) Wide dynamic range (clamped input: 2.9VP-P Typ., non-clamped input: 3.0VP-P, Typ.). 6) Fast switching speed (50ns Typ.). Block diagram IN2a CTLa OUTa GND OUTb 1 2 3 4 5 16 15 14 13 12 IN1a GND IN2b VCC CTLb Sa Sb OUTc CTLc IN2c 6 7 8 11 10 9 IN1b GND IN1c SC CTL L H Output IN2 IN1 Sa, Sb: non-clamped input Sc: clamped input 1 Multimedia ICs BA7609 / BA7609F Absolute maximum ratings (Ta = 25°C) Parameter Power supply voltage Power dissipation Operating temperature Storage temperature Symbol VCC Pd Topr Tstg Limits 9 500∗ – 40 ~ + 85 – 55 ~ + 125 Unit V mW °C °C ∗ Reduced by 5.0mW for each increase in Ta of 1°C over 25°C. Equivalent circuits Sa, Sb IN VCC R3 13.6k I2 0.3mA Q5 R7 100 Q9 R12 200 R16 200 R4 200 R2 2.2k Q4 R6 20k R9 200 Q7 Q8 Q10 Q11 R15 200 Q3 R10 100 Q2 Q12 Q1 OUT R1 1k R5 33k I1 0.6mA R17 12k I4 0.6mA I5 1mA R11 100 R13 100 ...