MM1188 [MITSUMI]
3-Input 1-Output Video Switch (with Y-C mix); 3输入1输出视频开关（为Y -C组合）
| 型号： | MM1188 |
| 厂家： | 
MITSUMI ELECTRONICS, CORP. |
| 描述： | 3-Input 1-Output Video Switch (with Y-C mix) |
| 文件： | 总5页 (文件大小：118K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
3-Input 1-Output Video Switch (with Y-C mix) MM1188
MITSUMI
3-Input 1-Output Video Switch (with Y-C mix)
Monolithic IC MM1188
Outline
This is a 3-input, 1-output video switch IC for video signal switching. Of the 3 inputs, one has an input pin
that supports S input, and there is a built-in mixing circuit.
Features
1. Built-in mixing circuit and input pin for S input
2. Built-in 6dB amp
3. Clamp function
(IN1-Y, IN2, IN3)
4. Mute function
5. Current consumption
6. Operating power supply voltage range
7. Frequency response
8. Crosstalk
12.5mA typ.
8~13V
10MHz
70dB (at 4.43MHz)
Package
SIP-9B (MM1188XS)
Applications
1. TV
2. VCR, etc.
Block Diagram
Control input truth table
SW1
SW2
L
L
OUT
L
H
-
IN1
IN2
IN3
H
3-Input 1-Output Video Switch (with Y-C mix) MM1188
MITSUMI
Pin Description
Pin no.
Pin name
Function
Internal equivalent circuit diagram
1
9
IN3
IN2
Input 3
Input 2
2
VCC
Power supply
3
8
SW1
SW2
Switch 1
Switch 2
4
OUT
Output
5
6
GND
IN1-Y
Ground
Input 1
(luminance signal or
composite signal)
3-Input 1-Output Video Switch (with Y-C mix) MM1188
MITSUMI
7
IN1-C
Input 1 (chroma signal)
(Ta=25°C)
Absolute Maximum Ratings
Item
Symbol
TSTG
TOPR
VCC
Ratings
-40~+125
Units
°C
Storage temperature
Operating temperature
Power supply voltage
Allowable loss
-20~+75
°C
15
V
Pd
1100
mW
(Except where noted otherwise, Ta=25°C, VCC=12.0V)
Electrical Characteristics
Item
Operating power supply voltage range
Consumption current
Voltage gain
Symbol
VCC
Id
GV
FC
DG
DP
Voff
CT
VIH1
VIL1
VIH2
VIL2
DRA
DRB
Measurement conditions
Min. Typ. Max. Units
8.0 13.0
8.8 12.5 16.5 mA
V
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5.5
-1
6.0
0
0
6.5
+1
3
dB
dB
%
Frequency characteristic
Differential gain
Differential phase
0
3
deg
Output offset voltage
Crosstalk
60 mV
-70
-60
dB
V
Switch 1 input voltage H
Switch 1 input voltage L
Switch 2 input voltage H
Switch 2 input voltage L
2.3
2.3
0.9
0.9
V
V
V
A
1.0
1.2
VP
VP
-
P
P
IN1-C input dynamic range
B
-
IN1-Y, IN2, IN3 input dynamic range
DRC
Refer to Measuring Circuit
1.5
VP
-P
IN1-C input impedance
IN1-C pin voltage
IN1-Y pin voltage
IN2 pin voltage
Ri
15
4.5
4.6
4.6
4.6
4.0
kΩ
V
V
V
V
VI1C
VI1Y
VI2
VI3
Vo
S1~S6=2
S1~S6=2
S1~S4=S6=2, S5=1
S1~S5=2, S6=1
S1~S6=2
4.0
4.1
4.1
4.1
3.5
5.0
5.1
5.1
5.1
4.5
IN3 pin voltage
Out pin voltage
V
3-Input 1-Output Video Switch (with Y-C mix) MM1188
MITSUMI
(Except where noted otherwise, VCC=12.0V, VC1=VCC, VC2=0V)
Measuring Procedures
Switch state
S1 S2 S3 S4 S5 S6
Item
Symbol
Measuring Procedure
Consumption
current
2
2
2
2
2
2
Connect a DC ammeter to the VCC pin and measure. The
ammeter is shorted for use in subsequent measurements.
Id
1
2
2
2
2
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
1
1
1
2
2
2
2
2
2
2
2
2
2
1
2
2
2
2
1
2
2
2
1
2
2
2
1
2
2
2
2
2
2
2
2
2
1
1
1
2
2
2
2
2
2
2
2
1
2
2
2
2
1
2
2
2
1
2
2
2
1
2
2
2
2
2
2
2
2
2
2
2
1
1
1
2
2
2
2
2
2
1
1
2
2
2
1
1
2
2
1
1
2
2
1
1
2
2
2
2
2
2
2
2
2
2
2
2
1
1
2
2
2
1
1
2
2
2
1
1
2
2
1
1
2
2
1
1
2
2
1
1
1
2
1
1
2
1
2
2
1
2
1
1
2
2
2
1
1
2
2
2
1
1
2
2
1
1
2
2
1
1
2
2
1
2
1
1
2
1
1
2
1
1
2
2
2
Input a 1.0VP P, 100kHz sine wave to SG, and
-
obtain Gv from the following formula given TP1
voltage as V1 and TP3 voltage as V2.
Voltage gain
GV
FC
GV=20LOG (V2/V1) dB
For the above GV measurement, given TP3
voltage for 10MHz as V3, FC is obtained from the
following formula.
Frequency
characteristic
FC=20LOG (V3/V2) dB
Input a 1.0VP P staircase wave to SG, and
-
measure differential gain at TP3.
1
Differential gain DG
Differential phase DP
*
APL=10~90%
Proceed as for DG, and measure differential
phase.
2
*
Output offset
Voff
Measure the DC voltage difference of each
switch status at TP2.
voltage
Assume VC1=2.3V, VC2=0.9V.
Input a 1.0VP P, 4.43MHz sine wave to SG, and
-
given TP3 voltage during signal output as V4,
switch S5 and S6, and given TP3 voltage for
output OFF as V5, CT is obtained from the
following formula.
Crosstalk
CT
CT=20LOG (V5/V4) dB
Switch 1 input
voltage H
Impress an optional DC voltage on TP7 and TP8.
Gradually raise from VC1=0V. TP4 voltage when
TP8 voltage is output on TP2 is VIH1. Gradually
lower from VC1=VCC. TP4 voltage when TP7
voltage is output on TP2 is VIL1.
VIH1
VIL1
VIH2
VIL2
Switch 1 input
voltage L
2
3
3
2
1
1
2
2
2
2
2
2
2
2
2
1
2
2
Switch 2 input
voltage H
Impress an optional DC voltage on TP7 and TP9.
Gradually raise from VC1=0V. TP5 voltage when
TP9 voltage is output on TP2 is VIH2. Gradually
lower from VC1=VCC. TP5 voltage when TP7
voltage is output on TP2 is VIL2.
Switch 2 input
voltage L
Input a luminance signal as shown in Figure 1 to
SG1, and a chroma signal as shown in Figure 2
to SG2. Change the chroma signal amplitude and
measure the maximum amplitude where there is
no waveform distortion at TP3 and convert to
input amplitude.
Input a luminance signal as shown in Figure 3 to SG1,
and a chroma signal as shown in Figure 2 to SG2.
Change the chroma signal amplitude and measure the
maximum amplitude where there is no waveform
distortion at TP3 and convert to input amplitude.
Input a sine wave to SG1. Measure the maximum
amplitude where there is no waveform distortion
at TP3 and convert to input amplitude.
A
DRA
IN1-C input
dynamic
range
B
DRB
DRC
IN1-Y, IN2, IN3
input dynamic
range
2
2
2
1
2
2
2
1
2
2
2
1
2
1
1
2
2
1
3-Input 1-Output Video Switch (with Y-C mix) MM1188
MITSUMI
Note : *1 *2 Measurement of IN1-C and IN1-Y mixed differential gain and differential phase is as follows.
Switch status : S1=3, S2=1, S3=S4=S5=S6=2
Measuring procedure : Input a 1.0VP P staircase wave signal (without chroma signal) to SG1,
-
and a chroma signal to SG2. Measure TP3 differential gain and differential phase.
Sync signal
0.286VP-P
(40IRE)
Chroma
signal
variable
amplitude
Figure 1
Figure 2
Luminance
signal
0.714VP
1.0VP
-P
-
P
(140IRE)
(100IRE)
Sync signal
0.286VP
(40IRE)
-P
Figure 3
Measuring Circuit
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