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Multimedia ICs
Video signal switcher
BA7611AN / BA7611AF
The BA7611AN and BA7611AF are a three-channel analog multiplexers with built-in mute and a 6dB amplifier. The
ICs designed for use in video cassette recorders. It features a large dynamic range and wide operating frequency
range, and have sync-tip clamp inputs whitch are ideal for switching video signals.
•
Applications
Video cassette recorders and televisions
•
Features
1) 3-input / 1-output switches.
2) Built-in 6dB amplifier.
3) Built-in mute.
4) Sync-tip clamp inputs.
5) Wide operating supply voltage range
(4.5V to 13.0V).
6) Low power consumption (50mW 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
•
Truth table
1
MUTE
6dB Amp
2 3 4 5 6 7 8
LOGIC
IN1
CTLA
CTLB
IN2
GND
IN3
V
CC
VOUT
BA7611AN
1
2
3
4
8
7
6
5
IN1
CTLA
CTLB
IN2
GND
IN3
V
CC
VOUT
BA7611AF
MUTE
LOGIC
6dB
CTL - A CTL - B OUT
L (OPEN) L (OPEN) IN1
L (OPEN) H IN2
H L (OPEN) IN3
H H MUTE
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Multimedia ICs BA7611AN / BA7611AF
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Absolute maximum ratings (Ta = 25°C)
Parameter
Symbol Limits Unit
V
CC 13.5 V
Pd 900
∗
1
(SIP8) / 550
∗
2
(SOP8) mW
Topr – 25 ~ + 75
°C
Tstg – 55 ~ + 125 °C
∗
1 Reduced by 9mW for each increase in Ta of 1°C over 25°C.
∗
2 Reduced by 5.5mW for each increase in Ta of 1°C over 25°C.
Power supply voltage
Power dissipation
Operating temperature
Storage temperature
•
Equivalent circuits
100Ω
1.2µA 100µA
Vcc
IN
CLAMP INPUT
100Ω 50kΩ
20kΩ
34kΩ
Vcc
CTLa / b
Note:
Input bias current 1µA [Typ.]
Output impedance 20Ω [Typ.]
CTLa / CTLb
2mA
Vcc
OUT
OUTPUT
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Multimedia ICs BA7611AN / BA7611AF
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Electrical characteristics (unless otherwise noted, Ta = 25°C and VCC = 5V)
Parameter
Symbol Min. Typ. Max. Unit Conditions
Measurement Circuit
VCC 4.5 — 13.0 V Fig.4
I
CC — 10.5 15.5 mA Fig.4
V
om 3.0 3.5 — VP-P
—
—
—
—
Fig.4
G
V dB f = 1MHz, VIN = 1.0VP-P
f = 1kHz, THD = 0.5%
Fig.4
C
T – 65 dB Fig.4
C
f – 3.0 0 dB Fig.4
V
TH-A 1.0 2.0 3.0 V Fig.4
V
TH-B 1.0 2.0 3.0 V Fig.4
f = 4.43MHz, V
IN = 1.0VP-P
f = 10MHz / 1MHz, VIN = 1.0VP-P
1.0
6.0 6.55.5
——
Operating voltage
Supply current
Maximum output level
Voltage gain
Interchannel crosstalk
Frequency characteristic
CTL pin switch level A
CTL pin switch level B
䊊Not designed for radiation resistance.
•
Electrical characteristic curves
OUTPUT VOLTAGE: VOUT (VP-P)
INPUT VOLTAGE: VIN (VP-P)
2
1
0
3
4
5
7
8
9
10
6
10 2 3 4 56
VCC =
12V
VCC = 9V
VCC = 5V
Fig. 1 VIN vs. VOUT (f = 1kHz)
•
Measurement circuit
1
MUTE
6dB Amp
2 3 4 5 6 7 8
Logic
12
1µF
0.022µF47µF
OSC
50Ω
1µF
SW
4
VCC
1
23
SW
1
12
1µF
OSC
50Ω
1µF
SW
2
12
+
1µF
OSC
50Ω
1µF
SW
3
SW5
VCC
VCC
1
23
PP
V
Fig. 4
A
VOLTAGE GAIN: Cf (dB)
FREQUENCY: f (Hz)
100k 300k 1M 3M 10M 30M 100M
– 2
0
2
4
6
Fig. 2 Frequency characteristics
CROSSTALK: CT (dB)
FREQUENCY: f (Hz)
100k 300k 1M 3M 10M 30M 100M
– 60
– 40
– 20
0
20
– 80
Fig. 3 Interchannel crosstalk
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Multimedia ICs BA7611AN / BA7611AF
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Measurement conditions
SW1 SW2 SW3 SW4 SW5
ICC 22222
I
N1
IN2
IN3
Vom
Vom
Vom
1
2
2
2
1
2
2
2
1
3
3
2
3
2
3
f = 1kHz,
THD = 0.5%
I
N1
IN2
IN3
GV
GV
GV
1
2
2
2
1
2
2
2
1
3
3
2
3
2
3
f = 1MHz,
V = 1V
P-P
IN1→IN2
IN1→IN3
IN1→MUTE
I
N2→IN3
IN2→MUTE
I
N3→MUTE
C
T
CT
CT
CT
CT
CT
1
1
1
2
2
2
2
2
2
1
1
2
2
2
2
2
2
1
3
2
2
2
2
2
2
3
2
3
2
2
f = 4.43MHz
V = 1V
P-P
IN1
IN2
IN3
Gf
Gf
Gf
1
2
2
2
1
2
2
2
1
3
3
2
3
2
3V = 1V
P-P
CTLa
CTLb
VTH
VTH
2
2
2
1
1
2
1
3
3
1
f = 10MHz
f = 1MHz
Parameter Symbol
Switch settings
Measurement
method
Current dissipation Ammeter
Maximum
output level
Voltage gain
∗ 2
Interchannel
crosstalk
∗ 3
Frequency
characteristic
∗ 4
CTL pin
switching level
∗ 5
∗ 1
∗
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 is the maximum output level V
om (VP-P).
∗
2: Input a 1VP-P, 1MHz sine wave. The voltage gain is given by GV = 20 log (VOUT / VIN).
∗
3: Input a 1VP-P, 4.43MHz sine wave. The interchannel crosstalk is given by CT = 20 log (VOUT / VIN).
∗
4: Input 1VP-P, 1MHz and 10MHz sine waves. The frequency characteristic is given by Gf = 20 log (VOUT (f = 10MHz) / VOUT (f = 1MHz)).
∗
5: Input a 1VP-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.
•
External dimensions (Units: mm)
SIP8
BA7611AN BA7611AF
SOP8
10.5 ± 0.5
1
8
2.54
3.5 ± 0.5
1.3
0.8
0.6
0.3 ± 0.1
2.8 ± 0.2
19.3 ± 0.2
1.2
5.8 ± 0.2
0.4 ± 0.11.27
0.15
0.3Min.
0.15 ± 0.1
0.11
6.2 ± 0.3
4.4 ± 0.2
5.0 ± 0.2
85
41
1.5 ± 0.1
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