BA7603 [ROHM]
Video signal switcher; 视频信号切换器
| 型号： | BA7603 |
| 厂家： | 
ROHM |
| 描述： | Video signal switcher |
| 文件： | 总6页 (文件大小：80K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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.
5) Excellent frequency characteristics
(10MHz, 0dB Typ.).
3) 5V power supply.
6) Wide dynamic range (2.9VP-P Typ.).
7) Fast switching speed (50ns Typ.).
4) Low power consumption (62.5mW Typ.).
Absolute maximum ratings (Ta = 25°C)
•
Parameter
Power supply voltage
Power dissipation
Symbol
VCC
Limits
9
Unit
V
Pd
500
mW
Operating temperature
Storage temperature
Topr
Tstg
– 40 ~ + 85
°C
°C
– 55 ~ + 125
Reduced by 5.0mW for each increase in Ta of 1°C over 25°C.
Block diagram
•
IN2a
CTLa
OUTa
1
2
3
4
5
6
7
8
16 IN1a
15 GND
IN2b
VCC
14
13
GND
OUTb
OUTc
CTLc
IN2c
12 CTLb
11 IN1b
10 GND
CTL
Output
IN 2
L
H
IN 1
9
IN1c
SWa, SWb, SWc: pedestal-clamped input
1
Multimedia ICs
BA7603 / BA7603F
Equivalent circuits
•
IN
SWa, SWb, SWc
VCC
I2
0.3mA
R3
22k
R12
200
R16
200
Q5
R7
100
Q9
R2
4k
Q6
R15
200
R9
200
Q7
Q8
Q10 Q11
Q3
Q2
Q1
R10
100
R11
100
R13
100
R14
100
Q12
OUT
R8
25k
I1
0.6mA
R17
12k
I4
0.6mA
I5
1mA
R1
1k
CTL
VCC
R1
50k
R6
25k
I2
0.6mA
R2
200
Q1
Q6
CTL
Q3
Q5
R5
25k
Q2
Q4
I1
0.25mA
I3
0.06mA
R3
400
R4
400
2
Multimedia ICs
BA7603 / BA7603F
Electrical characteristics (unless otherwise noted Ta = 25°C and VCC = 5V)
•
Parameter
Operating voltage
Supply current
Symbol
VCC
ICC
Min.
4.5
Typ.
5.0
13.0
2.9
0
Max.
5.5
20.0
—
Unit
V
Conditions
—
—
—
mA
VP-P
dB
dB
dB
V
Maximum output level
Voltage gain
Vom
GV
2.7
f = 1kHz, THD = 0.5%
– 0.5
—
0.5
—
f = 1MHz, VIN = 1VP-P
f = 4.43MHz, VIN = 1VP-P
10MHz / 1MHz, V = 1VP-P
—
Interchannel crosstalk
Frequency characteristics
CTL pin switch level
CT
– 65
0
Gf
– 3
1
VTH
2.0
2.5
3.0
Refer to the measurement circuit given in Fig. 1.
Reference data
•
Pin DC voltages (reference values)
Units: Vdc
Pin No.
DC voltage
Pin No.
DC voltage
1
2
3
4
5
6
7
8
2.05
4.91
0.65
0
9
2.05
0
10
11
12
13
14
15
16
2.05
4.91
5.00
2.05
0
0.65
0.65
4.91
2.05
2.05
Electrical characteristics
Parameter
Sync tip clamp level
Min.
Typ.
0.65
1.7M
30
Max.
Unit
0.49
—
0.80
—
Vdc
Ω
Input impedance (with clamp)
Output impedance
—
—
Ω
The input coupling capacitor values should be 0.1µF to 1µF.
3
Multimedia ICs
BA7603 / BA7603F
Measurement circuit
•
OSC
50Ω
50Ω
VCC
V
V
105
2
105
2
V
105
105
1
1
2
1
3
3
3
223
S2b
S3b
S1b
47 / 16
VCC
A
9
16
15
14
13
12
11
10
S1a
S1c
3
1
2
105
3
1
2
105
105
105
1
2
3
4
5
6
8
7
V
V
VOUTa
VOUTb VOUTc
OSC
V
V
V
OSC
50Ω
50Ω
S3a
3
S2a
S2C
1
2
3
S3c
3
3
105
1
2
1
2
105
105
105
V
V
V
1
2
VCC
OSC
OSC
V
50Ω
50Ω
VCC
Fig.1
4
Multimedia ICs
BA7603 / BA7603F
Measurment conditions
•
Switch settings
Measurement
method
Symbol
Parameter
S1a
S2a
S3a
S1b
S2b
S3b
S1c
S2c
S3c
Current dissipation
IN1a
ICC
2
2
2
2
2
2
2
2
2
Vom
Vom
Vom
Vom
Vom
Vom
GV
GV
GV
GV
GV
GV
CT
CT
CT
CT
CT
CT
Gf
3
2
2
2
2
2
3
2
2
2
2
2
2
3
2
2
2
2
3
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
3
2
2
2
2
2
3
2
2
2
2
2
3
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
3
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
3
2
2
2
2
2
3
2
2
2
2
2
3
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
3
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
3
2
2
2
2
2
3
2
2
2
2
2
3
2
2
2
2
2
3
f = 1kHz,
THD = 0.5%
IN2a
Maximum
IN1b
output
IN2b
Note 1
level
IN1C
IN2C
IN1a
IN2a
f = 1kHz,
V = 1VP-P
IN1b
IN2b
IN1c
IN2c
IN1a
IN2a
IN1b
IN2b
IN1c
IN2c
IN1a
IN2a
IN1b
IN2b
IN1c
IN2c
Voltage
gain
Note 2
f = 4.43MHz,
V = 1VP-P
Inter-
channel
crosstalk
Note 3
f = 10MHz / f = 1MHz,
V = 1VP-P
Gf
Gf
Gf
Gf
Frequency
character-
istic
Note 4
Gf
CTL pin
switching
level
VTH
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
CTLa
CTLb
CTLc
Note 5
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 Vom (VP-P).
Note 2: Input a 1VP-P, 1MHz sine wave. The voltage gain is given by GV = 20 log (VOUT / VIN).
Note 3: Input a 1VP-P, 4.43MHz sine wave. The interchannel crosstalk is given by CT = 20 log (VOUT / VIN).
Note 4: Input 1VP-P, 1MHz and 10MHz sine waves. The frequency characteristic is given by Gf = 20 log (VOUT (f = 10MHz) / VOUT (f = 10MHz)).
Note 5: Input a 1VP-P, 1MHz sine wave. Reduce the CTL pin voltage from VCC.
The CTL pin switching level (VTH) is the CTL pin voltage at which the VOUT level drops below 20mVP-P.
5
Multimedia ICs
BA7603 / BA7603F
External dimensions (Units: mm)
•
BA7603
BA7603F
10.0 ± 0.2
19.4 ± 0.3
16
1
9
8
16
1
9
8
7.62
1.27 0.4 ± 0.1
0.3Min.
2.54
0.5 ± 0.1
0° ~ 15°
0.15
DIP16
SOP16
6
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