Multimedia ICs
Video signal switcher
BA7602 / BA7602F
The BA7602 and BA7602F are switching ICs developed for use in VCRs. Each contains three two-channel analog
multiplexers. They feature a large dynamic range, and wide operating frequency range, and are suitable for switching
audio and video signals.
•
Applications recorders and televisions
Video cassette
•
Features / 1-output switches.
1) Three 2-input
2) 5V power supply.
3) Low power consumption (70mW Typ.).
4) Excellent frequency characteristics
(10MHz, 0dB Typ.).
5) Wide dynamic range (3.1V
P-P
Typ.).
6) High input impedance (20kΩ Typ.).
7) Fast switching speed (50ns Typ.).
•
Block diagram
IN2a
CTLa
OUTa
GND
OUTb
OUTc
CTLc
IN2c
1
2
3
4
5
6
Sc
Sb
Sa
16 IN1a
15 GND
14 IN2b
13 V
CC
12 CTLb
11 IN1b
10 GND
9
IN1c
CTL
L
H
Output
IN2
IN1
7
8
•
Absolute maximum ratings (Ta = 25°C)
Parameter
Power supply voltage
Power dissipation
Operating temperature
Storage temperature
Symbol
V
CC
Pd
Topr
Tstg
Limits
9
500
∗
– 40 ~ + 85
– 55 ~ + 125
Unit
V
mV
°C
°C
∗
Reduced by 5.0mW for each increase in Ta of 1°C over 25°C.
1
Multimedia ICs
BA7602 / BA7602F
•
Equivalent circuits
Sa, Sb, Sc
IN
V
CC
R3
8.4k
I2
0.3mA
Q5
R6
20k
R7
100
Q9
Q6
R12
200
R16
200
R4
200
R2
9.4k
Q4
R9
200
Q7
Q8
Q10 Q11
R15
200
Q3
R10
100
Q2
Q12
Q1
OUT
R1
1k
R5
33k
R8
25k
I1
0.6mA
I3
0.5mA
I4
0.6mA
I5
1mA
R11
100
R13
100
R14
100
CTL
V
CC
R1
50k
I2
0.6mA
Q1
Q6
R6
25k
R2
200
CTL
2
Q3
2
Q5
Q2
Q4
R5
25k
I1
0.25mA
R3
400
R4
400
I3
0.06mA
2
Multimedia ICs
BA7602 / BA7602F
CC
•
Electrical characteristics (unless otherwise noted, Ta = 25°C, V
Parameter
Operating voltage
Supply current
Maximum output level
Voltage gain
Interchannel crosstalk
Frequency characteristic
Input impedance
CTL pin switch level
Symbol
V
CC
I
CC
V
om
G
V
C
T
G
f
Z
IN
V
TH
Min.
4.5
—
2.8
– 0.5
—
–3
14
20
Typ.
5.0
14.0
3.1
0
– 65
0
20
2.5
Max.
5.5
20.5
—
0.5
—
1
26
3.0
= 5.0V)
Unit
V
mA
V
P-P
dB
dB
dB
kΩ
V
Conditions
—
—
f = 1kHz, THD = 0.5%
f = 1MHz, V
IN
= 1V
P-P
f = 4.43MHz, V
IN
= 1V
P-P
10MHz / 1MHz, V
IN
= 1V
P-P
—
—
Note: Refer to the measurement circuit given in Fig. 1.
•
Reference data(reference values)
Pin DC voltages
Pin No.
1
2
3
4
5
6
7
8
DC voltage
3.27
4.91
1.84
0
1.84
1.84
4.91
3.27
Pin No.
9
10
11
12
13
14
15
16
Units: Vdc
DC voltage
3.27
0
3.27
4.91
5.00
3.27
0
3.27
Electrical characteristics
Parameter
Input impedance (no clamp)
Output impedance
Min.
—
—
Typ.
20k
30
Max.
—
—
Unit
Ω
Ω
The input coupling capacitor values should be 0.1µF to 1µF.
3
Multimedia ICs
BA7602 / BA7602F
•
Measurement circuit
OSC
~
105
50Ω
V
CC
~
V
105
50Ω
V
V
1
2
3
1 2 3 105
1 2 3 105
V
CC
47 / 16
223
S
2b
S
3b
S
Ib
A
16
15
14
13
12
11
10
9
S
ia
S
1C
1 2 3 105
105
1 2 3 105
1
2
3
4
5
6
7
8
V
OSC
V
OUTa
V
OUTb
V
OUTc
V
105
OSC
~
50Ω
V
V
V
~
S
2C
50Ω
S
2a
S
3a
1 2 3 105
105
1 2 3
V
OSC
S
3C
V
V
V
CC
1 2
3
1 2
105
OSC
3 105
~
50Ω
V
V
CC
~
50Ω
Fig.1
4
Multimedia ICs
BA7602 / BA7602F
•
Measurment conditions
Switch settings
Parameter
Current dissipation
I
N1a
I
N2a
I
N1b
I
N2b
I
N1c
I
N2c
I
N1a
I
N2a
I
N1b
I
N2b
I
N1c
I
N2c
I
N1a
I
N2a
I
N1b
I
N2b
I
N1c
I
N2c
I
N1a
I
N2a
I
N1b
I
N2b
I
N1c
I
N2c
CTLa
CTLb
CTLc
I
N1a
I
N2a
I
N1b
I
N2b
I
N1c
I
N2c
Symbol
I
CC
V
Om
V
Om
V
Om
V
Om
V
Om
V
Om
G
V
G
V
G
V
G
V
G
V
G
V
C
T
C
T
C
T
C
T
C
T
C
T
G
f
G
f
G
f
G
f
G
f
G
f
V
TH
V
TH
V
TH
Z
IN
Z
IN
Z
IN
Z
IN
Z
IN
Z
IN
S
1a
2
3
2
2
2
2
2
3
2
2
2
2
2
2
3
2
2
2
2
3
2
2
2
2
2
3
2
2
1
2
2
2
2
2
S
2a
2
2
3
2
2
2
2
2
3
2
2
2
2
3
2
2
2
2
2
2
3
2
2
2
2
2
2
2
2
1
2
2
2
2
S
3a
2
2
3
2
2
2
2
2
3
2
2
2
2
2
3
2
2
2
2
2
3
2
2
2
2
1
2
2
2
3
2
2
2
2
S
1b
2
2
2
3
2
2
2
2
2
3
2
2
2
2
2
2
3
2
2
2
2
3
2
2
2
2
3
2
2
2
1
2
2
2
S
2b
2
2
2
2
3
2
2
2
2
2
3
2
2
2
2
3
2
2
2
2
2
2
3
2
2
2
2
2
2
2
2
1
2
2
S
3b
2
2
2
2
3
2
2
2
2
2
3
2
2
2
2
2
3
2
2
2
2
2
3
2
2
2
1
2
2
2
2
3
2
2
S
1C
2
2
2
2
2
3
2
2
2
2
2
3
2
2
2
2
2
2
3
2
2
2
2
3
2
2
2
3
2
2
2
2
1
2
S
2C
2
2
2
2
2
2
3
2
2
2
2
2
3
2
2
2
2
3
2
2
2
2
2
2
3
2
2
2
2
2
2
2
2
1
S
3C
2
2
2
2
2
2
3
2
2
2
2
2
3
2
2
2
2
2
3
2
2
2
2
2
3
2
2
1
2
2
2
2
2
3
Measurement
method
Maximum
output level
f = 1kHz
THD = 0.5%
Note 1
Voltage gain
f = 1kHz
V = 1V
P-P
Note 2
Interchannel
crosstalk
f = 4.43MHz
V = 1V
PP
Note 3
Frequency
characteristic
f = 10M / f = 1M
V = 1V
PP
Note 4
CTL pin
switching level
Note 5
Input
impedance
Note 6
Note 1: Connect a distortion meter to the output, and input a f = 1kHz sine wave. Adjust the output level until the output distortion is 0.5%.
This output voltage at this time is the maximum output level V
om
(V
P-P
).
Note 2: Input a 1V
P-P
, 1MHz sine wave. The voltage gain is given by G
V
= 20 log (V
OUT
/ V
IN
).
Note 3: Input a 1V
P-P
, 4.43MHz sine wave. The interchannel crosstalk is given by C
T
= 20 log (V
OUT
/ V
IN
).
Note 4: Input 1V
P-P
, 1MHz and 10MHz sine waves. The frequency characteristic is given by G
f
= 20 log (V
OUT
(f = 10MHz) / V
OUT
(f = 1MHz)).
Note 5: Input a 1V
P-P
, 1MHz sine wave. Reduce the CTL pin voltage from V
CC
.
The CTL pin switching level (V
TH
) is the CTL pin voltage at which the Vout level drops below 20mV
P-P
.
Note 6: Measure the input pin voltage V
IN50
when a current of DC50µA is flowing into the input pin. Measure the input pin open-circuit voltage.
The input impedance is given by Z = (V
IN50
- V
IN0
) / 50
×
10
-6
[Ω].
5
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