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參數資料
| 型號： | MM1238 |
| 廠商： | MITSUMI ELECTRIC |
| 英文描述： | 3-Input 2-Output 3-Circuit Video Switch |
| 中文描述： | 3路輸入2輸出3 -電路視頻開關 |
| 文件頁數： | 1/6頁 |
| 文件大小： | 94K |
| 代理商： | MM1238 |
MITSUMI
3-Input 2-Output 3-Circuit Video Switch MM1238
3-Input 2-Output 3-Circuit Video Switch
Monolithic IC MM1238
Outline
This IC is a video switch IC developed for high-end large/medium TVs incorporating three 3-input 2-output
circuits. It is ideal for switching BS/JSB/CS or M-N converters (mute to NTSC conversion). The BS-CS
decoder can be used as a W decoder.
Features
1. One of the two video signal outputs is used for external output, and has a 6dB amp, 75
, 1V
P
-
P
2. Input impedance
1~3 video circuits
15k
1~3 audio circuits
68k
3. Crosstalk
Video
-
60dB (at 4.43MHz)
Audio
-
80dB
(
at 1kHz
)
Video : Audio
-
70dB
(
at 100kHz
)
4. Frequency response
10MHz (6dB, 75
, amp only, 7MHz)
5. Supply voltage
8.0
~
13.0V
Package
SDIP-22A (MM1238XD)
Applications
1. TV
2. Free-standing VCR
3. Other video equipment
Pin Assignment
SDIP-22P
1
3
6
9
2
4 5
8
7
10 11
22
18
15
21
19
17 16
14
20
12
13
Pin no.
1
2
3
4
5
6
7
8
9
10
11
Pin name
L
IN
1
V
IN
1
R
IN
1
C11
L
IN
2
V
IN
2
R
IN
2
C12
L
IN
3
V
IN
3
R
IN
3
Function
Audio L
IN
1
Video IN1
Audio R
IN
1
SW1 control
Audio L
IN
2
Video IN2
Audio R
IN
2
SW1 control
Audio L
IN
3
Video IN3
Audio R
IN
3
Pin no.
12
13
14
15
16
17
18
19
20
21
22
Pin name
C21
R
OUT
2
V
OUT
2
L
OUT
2
GND
C22
V
CC
R
OUT
1
L
OUT
1
V
OUT
1
SAG
Function
SW2 control
Audio R
OUT
2
Video OUT2
Audio L
OUT
2
GND
SW2 control
Power supply
Audio R
OUT
1
Audio L
OUT
1
Video OUT1
Sag pin
July 5, 1993
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