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參數(shù)資料
| 型號： | LA7955 |
| 元件分類： | 多路復(fù)用及模擬開關(guān) |
| 英文描述： | DUAL 3-CHANNEL, AUDIO/VIDEO SWITCH, PDIP20 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-20 |
| 文件頁數(shù)： | 6/7頁 |
| 文件大?。?/td> | 95K |
| 代理商： | LA7955 |
LA7955
No.2740-6/7
6. Video switch operation
6dB
amp
5
6dB
amp
9
1
3
L
H
L
H
7
SW (B)
SW (A)
SW (A) is switched by the voltage of switching control input signal 1 (Pin 4), and SW (B), by the voltage of Switching
control input signal 2 (Pin 8). In addition, there are amplifiers (with 75
Ω terminating output pins) with a gain of 6dB at
the pre-output stages of Pins 5 and 9. However, an external buffer is required when shorted with a 75
Ω resistor.
7. Audio switch operation
SW (A) is switched by the voltage of switching control input signal 1 (Pin 4), and SW (B), by the voltage of switching
control input signal 2 (Pin 8). Setting the must input voltage (Pin 10) to H turns the muting switch ON and cutting
output 2.
Two pairs of audio switches are built in, allowing use in equipment designs for multiplex broadcast systems.
Output 1
Output 2
Input 1
Input 2
pin 11,20
pin 13,18
Input 3
pin 14,17
pin 12,19
pin 15,16
L
H
L
H
L
H
SW (B)
SW (A)
Application Example 1 (TV with two video inputs)
EXT IN1
EXT IN2
INT2
NC
1
2
Application Example 2 (TV with video inputs and VCR)
EXT IN1
EXT OUT1
EXT IN
EXT OUT
EXT IN2
INT
VTR
1
2
3
* Audio output 2 is ideal for TV output as it has a built-in muting switch.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA7956 | 制造商:Panasonic Industrial Company 功能描述:IC |
| LA7957 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Video Switch for TV/VCR Use |
| LA7958 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:For TV, VTR Audio/Video Switch |
| LA7958_11 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Audio/Video Switch |
| LA7958N-E | 制造商:ON Semiconductor 功能描述:AV SW IC - Ammo Pack 制造商:ON Semiconductor 功能描述:FNFLD / AV SW IC |
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