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MITSUMI
2-Input 2-Output Video Switch MM1120
2-Input 2-Output Video Switch
Monolithic IC MM1120
Outline
This is a 2-input, 2-output 3-circuit high performance video switch IC for video/audio signal switching. It is
ideal for use in TV/BS switching.
Features
1. 1 video signal circuit, 2 audio signal circuits
2. 1 built-in 75
driver circuit
3. Current consumption
17mA typ.
4. Operating power supply voltage range
9~12V
5. Frequency response
10MHz (V
OUT
1), 7MHz (V
OUT
2)
6. Crosstalk
Video signal circuit : 60dB (at 4.43MHz)
Audio signal circuit : 80dB (at 1kHz)
Package
SSOP-16A (MM1120XF)
Applications
1. TV with built-in BS
Block Diagram
Control input truth table
SW1
SW2
OUT1
OUT1
L
L
IN2
IN2
L
H
IN2
IN2
H
L
IN1
IN2
H
H
IN1
IN1
MITSUMI
2-Input 2-Output Video Switch MM1120
Pin Description
Pin no.
Pin name
Function
Internal equivalent circuit diagram
1
V
IN
Video input
3
2
SW
Switch
9
14
V
OUT
1
Video output 1
10
R
OUT
11
and
Audio output
12
L
OUT
13
5
R
IN
6
and
Audio input
7
L
IN
8
4
GND
Ground
MITSUMI
2-Input 2-Output Video Switch MM1120
15
V
OUT
2
Video output 2
16
V
CC
Power supply
Absolute Maximum Ratings
(Ta=25C)
Item
Symbol
Ratings
Units
Storage temperature
T
STG
-40~+125
C
Operating temperature
T
OPR
-20~+75
C
Power supply voltage
V
CC
max.
15
V
Allowable loss
Pd
500
mW
Electrical Characteristics
(Except where noted otherwise, Ta=25C, V
CC
=8V~13V, V1=0V, V2=0V,
SG-1, SG-2, SG-3, no signal)
Item
Symbol
Measurement
Measurement conditions
Min. Typ. Max. Units
pin
Operating power supply voltage
V
CC
V
CC
8.00
13.0
V
Consumption current
I
CC
1
V
CC
=9V
16.0
21.0
mA
I
CC
2
V
CC
=12V
17.0
22.0
mA
V
IN
1-V
OUT
1 V1=V2=V
CC
, SW1 : B, V
IN
2-V
OUT
1, SW1 : A
Voltage gain
G
V
1
SG1 : Sine wave 1V
P-P
, 0.1MHz -0.5
0
0.5
dB
Frequency characteristic
F
C
1
TP2
SG1 : Sweep signal 1.0V
P-P
-1.0
0
1.0
dB
10MHz/0.1MHz
Differential gain
D
G
1
SG1: Staircase wave 1V
P-P
0
3
%
TP8
APL=10, 50, 90%
Differential phase
D
P
1
SG1: Staircase wave 1V
P-P
0
3
deg
APL=10, 50, 90%
V
IN
2-V
OUT
2 SW1 : A, V
IN
1-V
OUT
2 V1=V2=V
CC
, SW1 : B
Voltage gain
G
V
2
SG1 : Sine wave 1V
P-P
, 0.1MHz
5.5
6.0
6.5
dB
Frequency characteristic
F
C
2
TP1
SG1 : Sweep signal 1.0V
P-P
,
-1.0
0
1.0
dB
7MHz/0.1MHz
Differential gain
D
G
2
SG1 : Staircase wave 1V
P-P
0
3
%
TP7
APL=10, 50, 90%
Differential phase
D
P
2
SG1 : Staircase wave 1V
P-P
0
3
deg
APL=10, 50, 90%
R
IN
1-R
OUT
1 V1=V2=V
CC
, SW2 : B, R
IN
2-R
OUT
1 SW2 : A
Voltage gain
G
V
3
SG2 : Sine wave 2.5V
P-P
, 1kHz
-0.5
0
0.5
dB
Total harmonic distortion
T
HD
1
TP4
SG2 : Sine wave 2.5V
P-P
, 1kHz
0.01
0.1
%
Output noise voltage
V
N
1
15kHz band
3
50
Vrms
R
IN
2-R
OUT
2 SW2 : A, R
IN
1-R
OUT
2 V1=V2=V
CC
, SW2 : B
Voltage gain
G
V
4
SG2 : Sine wave 2.5V
P-P
, 1kHz
-0.5
0
0.5
dB
Total harmonic distortion
T
HD
2
TP3
SSG2 : Sine wave 2.5V
P-P
, 1kHz
0.01
0.1
%
Output noise voltage
V
N
2
15kHz band
3
50
Vrms
MITSUMI
2-Input 2-Output Video Switch MM1120
L
IN
1-L
OUT
1 V1=V2=V
CC
, SW3 : B, L
IN
2-L
OUT
1 SW3 : A
Voltage gain
G
V
5
SG3 : Sine wave 2.5V
P-P
, 1kHz
-0.5
0
0.5
dB
Total harmonic distortion
T
HD
3
TP6
SG3 : Sine wave 2.5V
P-P
, 1kHz
0.01
0.1
%
Output noise voltage
V
N
3
15kHz band
3
50
Vrms
L
IN
2-L
OUT
2 SW3 : A, L
IN
1-L
OUT
2 V1=V2=V
CC
, SW3 : B
Voltage gain
G
V
6
SG3 : Sine wave 2.5V
P-P
, 1kHz
-0.5
0
0.5
dB
Total harmonic distortion
T
HD
4
TP5
SG3 : Sine wave 2.5V
P-P
, 1kHz
0.01
0.1
%
Output noise voltage
V
N
4
15kHz band
3
50
Vrms
Output offset voltage
V
OUT
1
Voff1
TP2
DC level difference when V1=0V and V1=Vcc
0
15
mV
V
OUT
2
Voff2
TP1
DC level difference when V2=0V and V2=Vcc
0
30
mV
R
OUT
1
Voff3
TP4
DC level difference when V1=0V and V1=Vcc
0
15
mV
R
OUT
2
Voff4
TP3
DC level difference when V2=0V and V2=Vcc
0
15
mV
L
OUT
1
Voff5
TP6
DC level difference when V1=0V and V1=Vcc
0
15
mV
L
OUT
2
Voff6
TP5
DC level difference when V2=0V and V2=Vcc
0
15
mV
Input impedance
V
IN
Ri1
V
IN
1 and V
IN
2
15
k
R
IN
Ri2
R
IN
1 and R
IN
2
68
k
L
IN
Ri3
L
IN
1 and L
IN
2
68
k
Output impedance
V
OUT
1
Ro1
50
R
OUT
Ro2
R
OUT
1 and R
OUT
2
100
L
OUT
R03
L
OUT
2 and L
OUT
2
100
Crosstalk
*
1
SG1 : Sine wave 1V
P-P
, 4.43MHz
C
T
1
TP7
V1=V
H
, V2=V
L
, SW1 : B
-60
-50
dB
V
IN
V
OUT
V1=V2=V
H
, SW1 : A
SG1 : Sine wave 1V
P-P
, 4.43MHz
C
T
2
TP2
V1=V
L
, V2=V
H
, SW1 : B
-60
-50
dB
V1=V
H
, V2=V
L
, SW1 : A
SG2 : Sine wave 2.5V
P-P
, 1kHz
C
T
3
TP3
V1=V
H
, V2=V
L
, SW2 : B
-80
-70
dB
R
IN
R
OUT
V1=V2=V
H
, SW2 : A
SG2 : Sine wave 2.5V
P-P
, 1kHz
C
T
4
TP4
V1=V
L
, V2=V
H
, SW2 : B
-80
-70
dB
V1=V
H
, V2=V
L
, SW2 : A
SG3 : Sine wave 2.5V
P-P
, 1kHz
C
T
5
TP5
V1=V
H
, V2=V
L
, SW3 : B
-80
-70
dB
L
IN
L
OUT
V1=V2=V
H
, SW3 : A
SG3 : Sine wave 2.5V
P-P
, 1kHz
C
T
6
TP6
V1=V
L
, V2=V
H
, SW3 : B
-80
-70
dB
V1=V
H
, V2=V
L
, SW3 : A
V
IN
1 R
OUT
2
C
T
7
TP3
SG1 : Sine wave 1V
P-P
, 4.43MHz
-55
-45
dB
1 V1=V
H
, V2=V
L
, SW1 : B
Switch input voltage
Switch input voltage H
V
IH
IC internal switch H level
2.1
V
Switch input voltage L
V
IL
IC internal switch L level
0.7
V
*
1 Crosstalk
V
H
=2.1V, V
L
=0.7V
C
T
is obtained by the following formula given input signal is V
IN
and output signal is V
OUT
V
OUT
C
T
=20log [dB]
V
IN
1
2
1
2
1
2
1
2
1
2
1
2
MITSUMI
2-Input 2-Output Video Switch MM1120
Measuring Circuit
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