ROHM BA7602

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
•Video
cassette recorders and televisions
•1)Features
Three 2-input / 1-output switches.
5) Wide dynamic range (3.1VP-P Typ.).
6) High input impedance (20kΩ Typ.).
7) Fast switching speed (50ns Typ.).
2) 5V power supply.
3) Low power consumption (70mW Typ.).
4) Excellent frequency characteristics
(10MHz, 0dB Typ.).
•Block diagram
IN2a
1
16 IN1a
Sa
CTLa
2
OUTa
3
15 GND
14 IN2b
13 VCC
GND
4
OUTb
5
OUTc
6
CTLc
7
10 GND
IN2c
8
9
Sb
12 CTLb
11 IN1b
Sc
IN1c
CTL
Output
L
IN2
H
IN1
•Absolute maximum ratings (Ta = 25°C)
Parameter
Symbol
Limits
Unit
Power supply voltage
VCC
9
V
Power dissipation
Pd
500∗
mV
Operating temperature
Topr
– 40 ~ + 85
°C
Storage temperature
Tstg
– 55 ~ + 125
°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
VCC
R3
8.4k
R4
200
I2
0.3mA
Q5
R16
200
R7
100
Q9
R6
20k
R2
9.4k
R12
200
Q6
R9
200
Q4
Q7
Q8
R15
200
Q10 Q11
Q3
R10
100
R11
100
R13
100
R14
100
Q2
Q12
Q1
OUT
R5
33k
R1
1k
I1
0.6mA
R8
25k
I3
0.5mA
I4
0.6mA
I5
1mA
CTL
VCC
R1
50k
R6
25k
R2
200
CTL
I1
0.25mA
2
I2
0.6mA
Q1
Q6
R3
400
2
Q3
2
Q5
Q2
Q4
R5
25k
R4
400
I3
0.06mA
Multimedia ICs
BA7602 / BA7602F
•Electrical characteristics (unless otherwise noted, Ta = 25°C, V
CC
Parameter
Operating voltage
= 5.0V)
Symbol
Min.
Typ.
Max.
Unit
Conditions
VCC
4.5
5.0
5.5
V
—
Supply current
ICC
—
14.0
20.5
mA
—
Maximum output level
Vom
2.8
3.1
—
VP-P
f = 1kHz, THD = 0.5%
Voltage gain
GV
– 0.5
0
0.5
dB
f = 1MHz, VIN= 1VP-P
Interchannel crosstalk
CT
—
– 65
—
dB
f = 4.43MHz, VIN = 1VP-P
Frequency characteristic
Gf
–3
0
1
dB
10MHz / 1MHz, VIN = 1VP-P
Input impedance
ZIN
14
20
26
kΩ
—
CTL pin switch level
VTH
20
2.5
3.0
V
—
Note: Refer to the measurement circuit given in Fig. 1.
data
•PinReference
DC voltages (reference values)
Units: Vdc
Pin No.
DC voltage
Pin No.
DC voltage
1
3.27
9
3.27
2
4.91
10
0
3
1.84
11
3.27
4
0
12
4.91
5
1.84
13
5.00
6
1.84
14
3.27
7
4.91
15
0
8
3.27
16
3.27
Electrical characteristics
Parameter
Min.
Typ.
Max.
Unit
Input impedance (no clamp)
—
20k
—
Ω
Output impedance
—
30
—
Ω
The input coupling capacitor values should be 0.1µF to 1µF.
3
Multimedia ICs
BA7602 / BA7602F
•Measurement circuit
OSC
~
50Ω
V
105
47 / 16
50Ω
V
105
1 2 3 105
VCC
~
VCC
V
223
2
1
S2b
1 2 3 105
3
SIb
S3b
A
16
15
14
13
12
11
10
9
Sia
S1C
1 2 3 105
105
1 2 3 105
1
V
2
3
VOUTa
OSC
~
4
5
S2a
7
8
VOUTb VOUTc
V
50Ω
6
V
105
V
OSC
V
~
S3a
S2C
1 2 3 105
105
V
1 2 3
S3C
V
OSC
~
V
1 2
VCC
50Ω
3 105
3
OSC
~
V
VCC
Fig.1
4
1 2
105
50Ω
50Ω
Multimedia ICs
BA7602 / BA7602F
•Measurment conditions
Switch settings
Parameter
Symbol
Measurement
method
S1a
S2a
S3a
S1b
S2b
S3b
S1C
S2C
S3C
ICC
2
2
2
2
2
2
2
2
2
Maximum
output level
IN1a
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
f = 1kHz
THD = 0.5%
Note 1
Voltage gain
IN1a
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 = 1VP-P
Note 2
Interchannel
crosstalk
IN1a
IN2a
IN1b
IN2b
IN1c
IN2c
CT
CT
CT
CT
CT
CT
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 = 1VPP
Note 3
Frequency
characteristic
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
f = 10M / f = 1M
V = 1VPP
Note 4
CTL pin
switching level
CTLa
CTLb
CTLc
VTH
VTH
VTH
3
2
2
2
2
2
1
2
2
2
3
2
2
2
2
2
1
2
2
2
3
2
2
2
2
2
1
Note 5
Input
impedance
IN1a
IN2a
IN1b
IN2b
IN1c
IN2c
ZIN
ZIN
ZIN
ZIN
ZIN
ZIN
1
2
2
2
2
2
2
1
2
2
2
2
2
3
2
2
2
2
2
2
1
2
2
2
2
2
2
1
2
2
2
2
2
3
2
2
2
2
2
2
1
2
2
2
2
2
2
1
2
2
2
2
2
3
Note 6
Current dissipation
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 = 1MHz)).
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.
Note 6: Measure the input pin voltage VIN50 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 = (VIN50 - VIN0) / 50 × 10-6 [Ω].
5
Multimedia ICs
BA7602 / BA7602F
•External dimensions (Units: mm)
BA7602
BA7602F
10.0 ± 0.2
19.4 ± 0.3
9
0.3 ± 0.1
2.54
0.5 ± 0.1
9
1
8
1.27
0.4 ± 0.1
0.15 ± 0.1
1.5 ± 0.1
7.62
0.3Min.
0° ~ 15°
0.15
DIP16
6
6.2 ± 0.3
8
16
4.4 ± 0.2
1
0.11
0.51Min.
3.2 ± 0.2 4.25 ± 0.3
6.5 ± 0.3
16
SOP16