Video signal switcher
Multimedia ICs
Video signal switcher
BA7605N
The BA7605N is a switching IC developed for use in VCRs. It has two two-ch...
Description
Multimedia ICs
Video signal switcher
BA7605N
The BA7605N is a switching IC developed for use in VCRs. It has two two-channel analog multiplexers with a large dynamic range, and wide operating frequency range. The switch has sync-tip clamped inputs and is ideal for switching video signals.
Applications Video cassette recorders and televisions
Features 1) Two 2-input / 1-output switches. 2) Sync-tip clamped inputs. 3) 5V power supply. 4) Low power consumption (42mW Typ.).
5) Excellent frequency characteristics (10MHz, 0dB Typ.). 6) Wide dynamic range (2.9VP-P Typ.). 7) Fast switching speed (50ns Typ.).
Block diagram
Sa Sb
1
2
3
4
5
6
7
8
9
10
OUTa
OUTb
IN1a
IN2a
CTLa
CTLb
VCC
IN2b
CTL L H
Output IN 2 IN 1
Sa, Sb: clamp inputs
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. 1
GND
IN1b
Multimedia ICs
BA7605N
Equivalent circuits
Sa,Sb
IN VCC R3 22k Q5 R2 4k R7 100 Q9 Q6 I2 0.3mA R12 200 R16 200
R9 200
Q7
Q8
Q10 Q11
R15 200
Q3 R10 100 Q2 Q12 Q1 OUT R1 1k R8 25k I1 0.6mA R17 12k I4 0.6mA I5 1mA R11 100 R13 100 R14 100
CTL
VCC R1 50k I2 0.6mA Q1 Q6 R6 25k
R2 200 CTL
Q3
Q5
Q2
Q4
R5 25k
I1 0.25mA
R3 400
R4 400
I3 0.06mA
2
Multimedia ICs
BA7605N
CC
Electrical characteristics (unless otherwise noted, Ta = 25°C ...
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