Multimedia ICs
Video signal switcher
BA7612N / BA7612F
The BA7612N and BA7613F are three-channel analog multiplexers with built-in mute, 6dB amplifier and 75Ω driver.
The ICs designed for use in video cassette recorders, and feature a large dynamic range and wide operating fre-
quency range. All inputs are terminated with 20kΩ (Typ.) input impedance.
•
Applications recorders and televisions
Video cassette
•
Features/ 1-output switches.
1) 3-input
2)
3)
4)
5)
Built-in 6dB amplifier and 75Ω driver.
Built-in mute.
Large input impedance (20kΩ Typ.).
Wide operating supply voltage range
(4.5V ~ 13.0V BA7612N)
(4.5V ~ 9.5V BA7613F).
6) Low power dissipation (103mW Typ.).
7) Excellent frequency characteristics
(10MHz, 0dB Typ.).
8) Wide dynamic range (3.5V
P-P
Typ.).
9) Low interchannel crosstalk
( – 65dB Typ., f = 4.43MHz).
•
Block diagram
BA7612N
MUTE
6dB Amp 75Ω Driver
CTLA 2
BA7612F
IN1
1
MUTE
6dB
75Ω
8 V
OUT
7 V
CC
LOGIC
CTLB 3
LOGIC
6 IN3
IN2
4
5 GND
1
IN1
2
CTLA
3
CTLB
4
IN2
5
GND
6
IN3
7
V
CC
8
V
OUT
•
Truth table
CTL A
L (OPEN)
L (OPEN)
H
H
CTL B
L (OPEN)
H
L (OPEN)
H
OUT
IN1
IN2
IN3
MUTE
1
Multimedia ICs
BA7612N / BA7612F
•
Absolute maximum ratings (Ta = 25°C)
Parameter
Power supply voltage
Power dissipation
Operating temperature
Storage temperature
Symbol
V
CC
Pd
Topr
Tstg
Limits
∗
1
13.5 /
∗
2
10.0
∗
1
900
∗
3
/
∗
2
550
∗
4
Unit
V
mW
°C
°C
– 25 ~ + 75
– 55 ~ + 125
∗
1 BA7612N
∗
2 BA7612F
∗
3 Reduced by 9mW for each increase in Ta of 1°C over 25°C.
∗
4 Reduced by 5.5mW for each increase in Ta of 1°C over 25°C.
•
Electrical characteristics (unless otherwise noted, Ta = 25°C and V
Parameter
Operating voltage range
Supply current
Maximum output level
Voltage gain
Interchannel crosstalk
Frequency characteristic
Input impedance
CTL pin switching level A
CTL pin switching level B
Not designed for radiation resistance.
CC
= 5V)
Conditions
BA7612F is Max.9.5V
Symbol
V
CC
I
CC
V
om
G
V
C
T
C
f
Z
IN
V
TH-A
V
TH-B
Min.
4.5
—
3.0
5.5
—
– 3.0
14
1.0
1.0
Typ.
—
20.5
3.5
6.0
– 65
0
20
2.0
2.0
Max.
13.0
29.0
—
6.5
—
1.0
26
3.0
3.0
Unit
V
mA
V
P-P
dB
dB
dB
kΩ
V
V
f = 1kHz, THD = 0.5%
f = 1MHz, V
IN
= 1.0V
P-P
f = 4.43MHz, V
IN
= 1.0V
P-P
f = 10MHz / 1MHz, V
IN
= 1.0V
P-P
2
Multimedia ICs
BA7612N / BA7612F
•
Measurement circuit
MUTE
6dB Amp 75
Ω
Driver
1000µ
+
43
75
V
~
PP
Logic
1
2
3
4
5
6
7
8
V
CC
A
47µF
+
0.022µF
SW
1
1
2
1
SW
2
2
1
SW
3
2
1µF
1µF
OSC
1µF
OSC
OSC
~
50Ω
1µF
~
SW
4
SW
5
1
2 3
50Ω
1µF
~
50Ω
1µF
1
2 3
V
CC
V
CC
Fig. 1
3
Multimedia ICs
BA7612N / BA7612F
•
Measurement conditions
Parameter
Current dissipation
Maximum
output
level
Voltage gain
I
N1
I
N2
I
N3
I
N1
I
N2
I
N3
I
N1
→I
N2
I
N1
→I
N3
I
N1
→MUTE
I
N2
→I
N3
I
N2
→MUTE
I
N3
→MUTE
I
N1
I
N2
I
N3
CTLa
CTLb
Symbol
SW
1
I
CC
V
om
V
om
V
om
G
V
G
V
G
V
C
T
C
T
C
T
C
T
C
T
C
T
G
f
G
f
G
f
V
TH
V
TH
2
1
2
2
1
2
2
1
1
1
2
2
2
1
2
2
2
2
2
2
1
2
2
1
2
2
2
2
1
1
2
2
1
2
2
1
Switch settings
SW
2
SW
3
2
2
2
1
2
2
1
2
2
2
2
2
1
2
2
1
1
2
SW
4
2
3
3
2
3
3
2
3
2
2
2
2
2
3
3
2
1
3
SW
5
2
3
2
3
3
2
3
2
3
2
3
2
2
3
2
3
3
1
Measurement
method
Ammeter
f = 1kHz
THD = 0.5%
∗
1
f = 1MHz,
V = 1V
P-P
∗
2
f = 4.43MHz,
V = 1V
P-P
∗
3
f = 10MHz / f = 1MHz,
V = 1V
P-P
∗
4
Interchannel
crosstalk
Frequency
characteristic
CTL pin
switching level
∗
5
∗
1: Connect a distortion meter to the output, and input a f = 1kHz sine wave. Adjust the input level until the output distortion is 0.5%.
This output voltage at this time multiplied by 2 is the maximum output level V
om
(V
P-P
).
∗
2: Input a 1V
P-P
, 1MHz sine wave. The voltage gain is given by G
V
= 20 log (V
OUT
/ V
IN
) + 6.
∗
3: Input a 1V
P-P
, 4.43MHz sine wave. The interchannel crosstalk is given by C
T
= 20 log (V
OUT
/ V
IN
).
∗
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)).
∗
5: Input a 1V
P-P
, 1MHz sine wave. Reduce the CTL pin voltage from V
CC
.
The CTL pin switching level (VTH) is the CTL pin voltage at which the V
OUT
level drops below 20mV
P-P
.
•
Electrical characteristic curves
6
f = 1kHz
OUTPUT VOLTAGE: V
OUT
(V)
5
V
CC
= 12V
4
V
CC
= 9V
3
2
V
CC
= 5V
1
SIGNAL ATTENUATE LEVEL: (dB)
8
6
4
2
0
–2
–4
–6
–8
100k
1M
10M
100M
SIGNAL ATTENUATE LEVEL: (dB)
V
CC
= 5V
V
IN
= 1V
P-P
V
CC
= 5V
V
IN
= 1V
P-P
0
– 20
– 40
– 60
0
1
2
3
4
5
6
– 80
100k
1M
10M
100M
INPUT VOLTAGE: V
IN
(V)
FREQUENCY: (Hz)
FREQUENCY: (Hz)
Fig. 2 V
IN
vs. V
OUT
caracteristics (f = 1kHz)
Fig. 3 Frequency characteristics
Fig. 4 Interchannel crosstalk
4
Multimedia ICs
notes
•
Operationimpedance is approximately 32Ω. Therefore,
The output
to ensure output matching, connect an external resistor of 43Ω.
BA7612N / BA7612F
•
External dimensions (Units: mm)
BA7612N
19.3
±
0.2
10.5
±
0.5
5.8
±
0.2
2.8
±
0.2
BA7612F
5.0
±
0.2
8
6.2
±
0.3
4.4
±
0.2
5
1.2
1
3.5
±
0.5
2.54
8
0.6
0.8
1.3
0.3
±
0.1
1.5
±
0.1
1
4
0.11
1.27
0.4
±
0.1
0.3Min.
0.15
SIP8
SOP8
0.15
±
0.1
5
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