Page 1
1
Multimedia ICs
Video signal switcher
BA7603 / BA7603F
The BA7603 and BA7603F are switching ICs developed for use in VCRs. Each contains three two-channel analog
multi-plexers. The switches have sync-tip clamped inputs and are ideal for switching video signals.
•
Applications
Video cassette recorders and televisions
•
Features
1) Three 2-input / 1-output switches.
2) Sync-tip clamped inputs.
3) 5V power supply.
4) Low power consumption (62.5mW Typ.).
5) Excellent frequency characteristics
(10MHz, 0dB Typ.).
6) Wide dynamic range (2.9V
P-P Typ.).
7) Fast switching speed (50ns Typ.).
•
Absolute maximum ratings (Ta = 25°C)
Parameter
Symbol Limits Unit
V
°C
mW
°C
V
CC 9
500
∗
Topr
Tstg
– 40 ~ + 85
– 55 ~ + 125
Pd
Power supply voltage
Power dissipation
Operating temperature
Storage temperature
∗
Reduced by 5.0mW for each increase in Ta of 1°C over 25°C.
•
Block diagram
OUTa
SWa
SWb
SWc
1IN2a IN1a
GND
IN2b
V
CC
CTLb
IN1b
GND
CTLa
GND
OUTb
OUTc
IN2c
16
15
14
13
12
11
10
9
2
3
4
5
6
7
8
CTLc
IN1c
L
H
IN 2
IN 1
CTL
SWa, SWb, SWc: pedestal-clamped input
Output
Page 2
2
Multimedia ICs BA7603 / BA7603F
•
Equivalent circuits
R3
22k
R8
25k
R17
12k
I1
0.6mA
I2
0.3mA
I4
0.6mA
I5
1mA
R7
100
R10
100
R11
100
R13
100
R14
100
R9
200
R12
200
R16
200
R15
200
R2
4k
R1
1k
Q5
Q6
Q7 Q8 Q10 Q11
Q12
Q9
Q3
Q2
Q1
OUT
V
CC
IN
SWa, SWb, SWc
R3
400
R4
400
R5
25k
R2
200
Q3
Q1
Q5
Q6
Q2 Q4
CTL
R6
25k
R1
50k
V
CC
I2
0.6mA
I1
0.25mA
I3
0.06mA
CTL
Page 3
3
Multimedia ICs BA7603 / BA7603F
•
Electrical characteristics (unless otherwise noted Ta = 25°C and VCC = 5V)
Parameter Symbol Min. Typ. Max. Unit Conditions
V
CC 4.5 5.0 5.5 V
I
CC — 13.0 20.0 mA
V
om 2.7 2.9 — VP-P f = 1kHz, THD = 0.5%
G
V – 0.5 0 0.5 dB f = 1MHz, VIN = 1VP-P
CT — – 65 —
—
—
—
dB f = 4.43MHz, VIN = 1VP-P
Gf – 3 0 1 dB 10MHz / 1MHz, V = 1VP-P
VTH 2.0 2.5 3.0 V
Operating voltage
Supply current
Maximum output level
Voltage gain
Interchannel crosstalk
Frequency characteristics
CTL pin switch level
∗
Refer to the measurement circuit given in Fig. 1.
•
Reference data
Pin DC voltages (reference values)
1 2.05 9 2.05
2 4.91 10 0
3 0.65 11 2.05
4 0 12 4.91
5 0.65 13 5.00
6 0.65 14 2.05
7 4.91 15 0
8 2.05 16 2.05
Pin No. DC voltage DC voltagePin No.
Units: Vdc
Electrical characteristics
Parameter
0.49 0.65 0.80 Vdc
— 1.7M — Ω
—30— Ω
Min. Typ. Max. Unit
Sync tip clamp level
Input impedance (with clamp)
Output impedance
The input coupling capacitor values should be 0.1µF to 1µF.
Page 4
4
Multimedia ICs BA7603 / BA7603F
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Measurement circuit
123456
7
8
16 15 14 13 12 11 10
9
50Ω
S
1a
12
3
105
105
V
OSC
50Ω
S
2C
12
3
105
105
V
V
V
OSC
50Ω
S
1c
12
3
105
105
V
OSC
50Ω
S
2a
12
3
105
105
V
OSC
S3a
12
3
V
CC
V
S3c
12
3
V
CC
VOUTa
V
V
VOUTbVVOUTc
V
50Ω
S
2b S3b
12
3
105
105
OSC
V
50Ω
S
1b
12
3
105
105
VCC
223
47 / 16
V
CC
A
12
3
Fig.1
Page 5
5
Multimedia ICs BA7603 / BA7603F
S1a S2a S3a S1b S2b S3b S1c S2c S3c
ICC 222222222
I
N1a
IN2a
IN1b
IN2b
IN1C
IN2C
Vom
Vom
Vom
Vom
Vom
Vom
3
2
2
2
2
2
2
3
2
2
2
2
2
3
2
2
2
2
2
2
3
2
2
2
2
2
2
3
2
2
2
2
2
3
2
2
2
2
2
2
3
2
2
2
2
2
2
3
2
2
2
2
2
3
THD = 0.5%
I
N1a
IN2a
IN1b
IN2b
IN1c
IN2c
GV
GV
GV
GV
GV
GV
3
2
2
2
2
2
2
3
2
2
2
2
2
3
2
2
2
2
2
2
3
2
2
2
2
2
2
3
2
2
2
2
2
3
2
2
2
2
2
2
3
2
2
2
2
2
2
3
2
2
2
2
2
3
f = 1kHz,
V = 1V
P-P
IN1a
IN2a
IN1b
IN2b
IN1c
IN2c
2
3
2
2
2
2
3
2
2
2
2
2
2
3
2
2
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
3
2
2
2
2
3
2
2
2
2
2
2
3
f = 4.43MHz,
V = 1V
P-P
IN1a
IN2a
IN1b
IN2b
IN1c
IN2c
Gf
Gf
Gf
Gf
Gf
Gf
3
2
2
2
2
2
2
3
2
2
2
2
2
3
2
2
2
2
2
2
3
2
2
2
2
2
2
3
2
2
2
2
2
3
2
2
2
2
2
2
3
2
2
2
2
2
2
3
2
2
2
2
2
3
V = 1V
P-P
CTLa
CTLb
CTLc
V
TH
VTH
VTH
1
2
2
2
2
2
1
2
2
2
1
2
2
2
2
2
1
2
2
2
1
2
2
2
2
2
1
f = 1kHz,
C
T
CT
CT
CT
CT
CT
f = 10MHz / f = 1MHz,
Note 1
Note 2
Note 3
Note 4
Note 5
Parameter
Symbol
Switch settings
Measurement
method
Current dissipation
Maximum
output
level
Voltage
gain
Interchannel
crosstalk
Frequency
characteristic
CTL pin
switching
level
This output voltage at this time is the maximum output level V
om (VP-P).
P-P, 1MHz sine wave. The voltage gain is given by GV = 20 log (VOUT / VIN).
P-P, 4.43MHz sine wave. The interchannel crosstalk is given by CT = 20 log (VOUT / VIN).
P-P, 1MHz and 10MHz sine waves. The frequency characteristic is given by Gf = 20 log (VOUT (f = 10MHz) / VOUT (f = 10MHz)).
P-P, 1MHz sine wave. Reduce the CTL pin voltage from VCC.
The CTL pin switching level (V
TH) is the CTL pin voltage at which the VOUT level drops below 20mVP-P.
•
Measurment conditions
Page 6
6
Multimedia ICs BA7603 / BA7603F
SOP16
BA7603 BA7603F
DIP16
0.51Min.
0.3
± 0.1
916
81
6.5 ± 0.3
3.2
±
0.2
4.25
±
0.3
0.5 ± 0.1
19.4 ± 0.3
2.54
0° ~ 15°
7.62
0.4 ± 0.11.27
0.15
0.15 ± 0.1
0.3Min.
4.4 ± 0.2
6.2 ± 0.3
0.11
1.5 ± 0.1
1
16
10.0 ± 0.2
8
9
•
External dimensions (Units: mm)
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