Page 1
1) Three 2-input / 1-output switches (one with syncclamped inputs, the other two non-clamped).
2) 5V power supply.
3) Low power consumption (62.5mW Typ.).
4) Excellent frequency characteristics
(10MHz, 0dB Typ.).
5) Wide dynamic range (clamped input: 2.9V
P-P Typ.,
non-clamped input: 3.0V
P-P, Typ.).
6) Fast switching speed (50ns Typ.).
1
Multimedia ICs
Video signal switcher
BA7609 / BA7609F
The BA7609 and BA7609F are switching ICs developed for use in VCRs. Each contains three two-channel analog
multiplexers. As one of the switches has sync-tip clamp inputs and the other two have non-clamped inputs these ICs
are ideal for switching audio, video and chroma signals.
•
Applications
Video cassette recorders and televisions
•
Features
•
Block diagram
1IN2a
2CTLa
3OUTa
4GND
5OUTb
6OUTc
7CTLc
8IN2c
16 IN1a
15 GND
14 IN2b
13 VCC
Sa
Sb
12 CTLb
11 IN1b
10 GND
9 IN1c
SC
CTL
L IN2
H IN1
Output
S
a
, Sb: non-clamped input
S
c
: clamped input
Page 2
2
Multimedia ICs BA7609 / BA7609F
•
Absolute maximum ratings (Ta = 25°C)
Parameter
Symbol Limits Unit
V
CC 9V
500
∗
mW
Topr °C
Tstg °C
Pd
– 40 ~ + 85
– 55 ~ + 125
Power supply voltage
Power dissipation
Operating temperature
Storage temperature
∗
Reduced by 5.0mW for each increase in Ta of 1°C over 25°C.
•
Equivalent circuits
R3
13.6k
R4
200
R5
33k
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
R6
20k
R12
200
R16
200
R15
200
R2
2.2k
R1
1k
Q4
Q5
Q7 Q8 Q10 Q11
Q12
Q9
Q3
Q2
Q1
OUT
V
CC
IN
Sa, Sb
Page 3
3
Multimedia ICs BA7609 / BA7609F
Sc
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
R3
400
R4
400
R5
25k
R2
200
Q3
22
Q1
Q5
Q6
Q2 Q4
CTL
R6
25k
R1
50k
V
CC
I2
0.6mA
I1
0.25mA
I3
0.06mA
CTL
Units
: R = Ω
Page 4
4
Multimedia ICs BA7609 / BA7609F
•
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 — 12.5 20.0 mA —
V
om 2.6 2.9 — VP-P
Vom 2.7 3.0 — VP-P
GV – 0.5 0 dB
— – 65 — dB
G
f – 3 0 dB
Z
IN 14 20 26 kΩ
THD — 0.007 — %
V
TH 2.0 2.5 3.0 V —
C
T
10MHz / 1MHz, VIN = 1VP-P
f = 1MHz, VIN = 1VP-P
f = 4.43MHz, VIN = 1VP-P
0.5
1
non-clamped input
f = 1kHz, 1V
P-P non-clamped input
f = 1kHz, THD = 0.5% non-clamped input
f = 1kHz, THD = 0.5% clamped input
Operating voltage
Supply current
Maximum output level 1
Maximum output level 2
Voltage gain
Interchannel crosstalk
Frequency characteristic
Input impedance
Total-harmonic distortion
CTL pin switch level
Note: Refer to the measurement circuit given in Fig. 1.
•
Reference data
Pin DC voltages (reference values)
1 2.48 9 2.05
2 4.91 10 0
3 1.76 11 2.48
4 0 12 4.91
5 1.76 13 5.00
6 0.65 14 2.48
7 4.91 15 0
8 2.05 16 2.48
Pin No. DC voltage DC voltagePin No.
Units: Vdc
Electrical characteristics
Parameter
0.49 0.65 0.80 Vdc
—
20k
— Ω
—
1.7M
— Ω
—
30
— Ω
Min. Typ. Max. Unit
The input coupling capacitor values should be 0.1µF to 1µF.
Sync tip clamp level
Input impedance (no clamp)
Input impedance (with clamp)
Output impedance
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5
Multimedia ICs BA7609 / BA7609F
•
Measurement circuit
9
10
111213141516
87654321
V
V
V
V V
V
V
V
V
V
V
V
A
VCC
VCC
S2b S3b
S1b
47 / 16
223
OSC
V
CC
VOUTa VOUTb
VOUTc
VCC
OSC
OSC
OSC
50
Ω
50
Ω
11223
3
12
3
105
105
105
S
1C
S2C
S3C
S3aS2a
S1a
50
Ω
50
Ω
50
Ω
50
Ω
105
105
105
105
105
105
105
105
123
123
123
112323
123
105
Fig.1
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6
Multimedia ICs BA7609 / BA7609F
•
Measurement conditions
S1a S2a S3a S1b S2b S3b S1c S2c S3c
ICC 222222222
I
N2a
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%
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
I
N1a
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 = 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
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
I
N1a
IN2a
IN1b
IN2b
Z
IN
Z
IN
Z
IN
Z
IN
1
2
2
2
2
1
2
2
2
3
2
2
2
2
1
2
2
2
2
1
2
2
2
3
2
2
2
2
2
2
2
2
2
2
2
2
I
N1a
IN2a
IN1b
IN2b
THD
THD
THD
THD
3
2
2
2
2
3
2
2
2
3
2
2
2
2
3
2
2
2
2
3
2
2
2
3
2
2
2
2
2
2
2
2
2
2
2
2
f = 1MHz
V = 1V
P-P
IN1a
f = 10MHz
f = 1MHz
Note 1
Note 2
Note 3
Note 5
Note 4
Note 6
Note 7
Parameter
Switch settings
Symbol
Measurement
method
Current dissipation
Ammeter
Maximum
output
level
Voltage gain
Interchannel
crosstalk
Frequency
characteristic
CTL pin
switching level
Input
impedance
Total-harmonic
distortion
Note 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).
Note 2: Input a 1V
P-P, 1MHz sine wave. The voltage gain is given by GV = 20 log (VOUT / VIN).
Note 3: Input a 1V
P-P, 4.43MHz sine wave. The interchannel crosstalk is given by CT = 20 log (VOUT / VIN).
Note 4: Input 1V
P-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 1V
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.
Note 6: Measure the input pin voltage V
IN50 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 = (V
IN50 - VIN0) / 50 × 10
-6
[Ω].
Note 7: Input a 1V
P-P, 1kHz sine wave and measure the total-harmonic distortion of the output using a total-harmonic distortion meter.
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7
Multimedia ICs BA7609 / BA7609F
•
External dimensions (Units: mm)
BA7609
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
BA7609F
SOP16DIP16
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
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